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<div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">System of geographic grid references used in Canada</div> <style data-mw-deduplicate="TemplateStyles:r1251242444">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output 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ambox-Refimprove" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><a href="/wiki/File:Question_book-new.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">This article <b>needs additional citations for <a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">verification</a></b>.<span class="hide-when-compact"> Please help <a href="/wiki/Special:EditPage/National_Topographic_System" title="Special:EditPage/National Topographic System">improve this article</a> by <a href="/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">adding citations to reliable sources</a>. Unsourced material may be challenged and removed.<br /><small><span class="plainlinks"><i>Find sources:</i> <a rel="nofollow" class="external text" href="https://www.google.com/search?as_eq=wikipedia&q=%22National+Topographic+System%22">"National Topographic System"</a> – <a rel="nofollow" class="external text" href="https://www.google.com/search?tbm=nws&q=%22National+Topographic+System%22+-wikipedia&tbs=ar:1">news</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?&q=%22National+Topographic+System%22&tbs=bkt:s&tbm=bks">newspapers</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?tbs=bks:1&q=%22National+Topographic+System%22+-wikipedia">books</a> <b>·</b> <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?q=%22National+Topographic+System%22">scholar</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.jstor.org/action/doBasicSearch?Query=%22National+Topographic+System%22&acc=on&wc=on">JSTOR</a></span></small></span> <span class="date-container"><i>(<span class="date">August 2014</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <p>The <b>National Topographic System</b> or <b>NTS</b> is the system used by <a href="/wiki/Natural_Resources_Canada" title="Natural Resources Canada">Natural Resources Canada</a> for providing general purpose <a href="/wiki/Topography" title="Topography">topographic</a> maps of the country. NTS maps are available in a variety of scales, the standard being 1:50,000 and 1:250,000 scales.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> The maps provide details on landforms and terrain, lakes and rivers, forested areas, administrative zones, populated areas, roads and railways, as well as other human-made features.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> These maps are currently used by all levels of government and industry for <a href="/wiki/Wildfire" title="Wildfire">forest fire</a> and <a href="/wiki/Flood_control" class="mw-redirect" title="Flood control">flood control</a> (as well as other environmental issues), depiction of crop areas, right-of-way, real estate planning, development of natural resources and highway planning. To add context, land area outside Canada is depicted on the 1:250,000 maps, but not on the 1:50,000 maps. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=National_Topographic_System&action=edit&section=1" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Topographic mapping in Canada was originally undertaken by many different agencies, with the Canadian Army’s Intelligence Branch forming a survey division to create a more standardized mapping system in 1904. The indexing system used today was established in 1923, and the map catalogue officially became the National Topographic System in 1926.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Subdivisions">Subdivisions</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=National_Topographic_System&action=edit&section=2" title="Edit section: Subdivisions"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:NTS_Zones_and_Map_Series_Numbers.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/87/NTS_Zones_and_Map_Series_Numbers.png/400px-NTS_Zones_and_Map_Series_Numbers.png" decoding="async" width="400" height="320" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/87/NTS_Zones_and_Map_Series_Numbers.png/600px-NTS_Zones_and_Map_Series_Numbers.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/87/NTS_Zones_and_Map_Series_Numbers.png/800px-NTS_Zones_and_Map_Series_Numbers.png 2x" data-file-width="1920" data-file-height="1535" /></a><figcaption>NTS zones and map series. Legend: <style data-mw-deduplicate="TemplateStyles:r981673959">.mw-parser-output .legend{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .legend-color{display:inline-block;min-width:1.25em;height:1.25em;line-height:1.25;margin:1px 0;text-align:center;border:1px solid black;background-color:transparent;color:black}.mw-parser-output .legend-text{}</style><div class="legend"><span class="legend-color mw-no-invert" style="background-color:#00F; color:white;"> </span> High Arctic zone</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r981673959"><div class="legend"><span class="legend-color mw-no-invert" style="background-color:#00C0FF; color:black;"> </span> Arctic zone</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r981673959"><div class="legend"><span class="legend-color mw-no-invert" style="background-color:#FFC000; color:black;"> </span> Southern zone</div></figcaption></figure> <p>The subdivision scheme that the National Topographic System uses is known as the <i>National Tiling System</i>,<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> which also functions as a coarse method of <a href="/wiki/Geocode" title="Geocode">geocoding</a>. This scheme initially splits the country into three major "zones", each spanning a different range of latitudes. The "Southern zone" covers latitudes between <a href="/wiki/40th_parallel_north" title="40th parallel north">40°N</a> and <a href="/wiki/68th_parallel_north" title="68th parallel north">68°N</a>, the "Arctic zone" covers latitudes between 68°N and <a href="/wiki/80th_parallel_north" title="80th parallel north">80°N</a>, and the "High Arctic zone" covers latitudes between 80°N and <a href="/wiki/88th_parallel_north" class="mw-redirect" title="88th parallel north">88°N</a>. The National Tiling System is capable of covering all points with latitudes ranging from 40°N to 80°N and longitudes from <a href="/wiki/48th_meridian_west" title="48th meridian west">48°W</a> to <a href="/wiki/144th_meridian_west" title="144th meridian west">144°W</a>, as well as all points with latitudes ranging from 80°N to 88°N and longitudes from <a href="/wiki/56th_meridian_west" title="56th meridian west">56°W</a> to <a href="/wiki/136th_meridian_west" title="136th meridian west">136°W</a>. </p><p>Each National Tiling System zone is divided into individual 1:1,000,000 scale "map series", denoted by a number indicating its general position in the country (e.g., <b>30</b>); which each map series divided into several 1:250,000 scale "map areas", denoted by a letter (e.g., <b>M</b>); and each map area divided into 1:50,000 scale "map sheets", denoted by a number (e.g., <b>13</b>). These numbers and letters are then combined to form a unique designator for a map sheet, in this case, <span style="font-weight: bold;"><a rel="nofollow" class="external text" href="https://maps.canada.ca/czs/index-en.html?bbox=-80,43.75,-79.5,44&name=NTS_map_sheet_30M13">30M13</a> <a href="/wiki/Bolton,_Ontario" title="Bolton, Ontario">Bolton</a></span>, identifying a map sheet which includes the city of <a href="/wiki/Vaughan,_Ontario" class="mw-redirect" title="Vaughan, Ontario">Vaughan, Ontario</a>. Some map sheets are further sub-divided at their central meridian into two 1:50,000 scale "half-sheets", with an E or W appended onto the map sheet designator. </p><p>All map series span four degrees of latitude, but each spans a different range of longitudes depending on the zone it is located in. Map series in the Southern and Arctic zones span eight degrees of longitude, while those in the High Arctic zone span sixteen degrees of longitude. In the Southern and Arctic zones, the National Tiling System numbers map series by latitude and longitude. After padding a map series number to three digits using leading zeroes, the last digit in a map series number indicates a specific range of latitudes, and the number formed by the other digits indicates a specific range of longitudes. In the High Arctic zone, map series numbers are three digits, with the first two digits of each number inherited from the two map series in the Arctic zone immediately to the south. </p> <table class="wikitable"> <tbody><tr> <th colspan="4">Southern zone 1:250,000<br />map area lettering scheme</th> <th colspan="2" style="border-left: 2px solid grey;">Arctic/High Arctic zone 1:250,000<br />map area lettering scheme</th> <th colspan="4" style="border-left: 2px solid grey;">1:50,000 map sheet<br />numbering </th></tr> <tr style="text-align: center;"> <td>M</td> <td>N</td> <td>O</td> <td>P</td> <td style="border-left: 2px solid grey;">G</td> <td>H</td> <td style="border-left: 2px solid grey;">13</td> <td>14</td> <td>15</td> <td>16 </td></tr> <tr style="text-align: center;"> <td>L</td> <td>K</td> <td>J</td> <td>I</td> <td style="border-left: 2px solid grey;">F</td> <td>E</td> <td style="border-left: 2px solid grey;">12</td> <td>11</td> <td>10</td> <td>9 </td></tr> <tr style="text-align: center;"> <td>E</td> <td>F</td> <td>G</td> <td>H</td> <td style="border-left: 2px solid grey;">C</td> <td>D</td> <td style="border-left: 2px solid grey;">5</td> <td>6</td> <td>7</td> <td>8 </td></tr> <tr style="text-align: center;"> <td>D</td> <td>C</td> <td>B</td> <td>A</td> <td style="border-left: 2px solid grey;">B</td> <td>A</td> <td style="border-left: 2px solid grey;">4</td> <td>3</td> <td>2</td> <td>1 </td></tr></tbody></table> <p>In the Southern zone, map series are divided into sixteen map areas, each assigned a letter from A through P, while in the Arctic and High Arctic zones, they are split into eight map areas, each assigned a letter from A through H. The letters are assigned in a <a href="/wiki/Boustrophedon" title="Boustrophedon">boustrophedon</a> pattern starting with the southeasternmost map area in a series. </p><p>Each map area in turn is split into sixteen map sheets, numbered from 1 through 16 in an identical boustrophedon pattern to the map areas. A map sheet in the Southern zone spans half a degree of longitude, one in the Arctic zone spans a full degree, and one in the High Arctic zone spans two degrees. </p><p>Each of these 1:50,000 sheets, in turn, was at one time split into eight 1:25,000 scale map sub-sheets, lettered as lower-case a to h, using the same boustrophedon pattern as the smaller-scale map areas and sheets. These 1:25,000 scale maps were produced from the 1960s to about 1975, then abandoned, and liquidated in the 1980s (along with the scattered coverage of the 1:500,000 and 1:125,000 scale). Most were quadrangles of 7.5' by 7.5', but two unusually-shaped coverages were provided to cover Whitehorse, one being primarily 105 D/11 h but with portions of g and 105 D/10 e; the other had small portions of 105 D/14 a and b. "Military Town Plans" were also prepared on the same 1:25,000 scale, with "declassified versions" available to the public; the classified versions had places of military significance marked; these maps did not follow a quadrangle plan of any kind. </p><p>Not all National Topographic System maps strictly follow the National Tiling System's linear grid. Some maps also, as an "overedge", cover land in an area which would otherwise be covered by an adjacent map sheet, simply because the latter area does not contain enough land in Canada to warrant a separate printing.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup class="noprint Inline-Template" style="margin-left:0.1em; white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Please_clarify" title="Wikipedia:Please clarify"><span title="The text near this tag may need clarification or removal of jargon. (November 2024)">clarification needed</span></a></i>]</sup> </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=National_Topographic_System&action=edit&section=3" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/International_Map_of_the_World" title="International Map of the World">International Map of the World</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=National_Topographic_System&action=edit&section=4" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output 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href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon 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.citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.nrcan.gc.ca/earth-sciences/geography/topographic-information/maps/national-topographic-system-maps/9767">"National-topographic-system-maps"</a>. 29 May 2007.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=National-topographic-system-maps&rft.date=2007-05-29&rft_id=https%3A%2F%2Fwww.nrcan.gc.ca%2Fearth-sciences%2Fgeography%2Ftopographic-information%2Fmaps%2Fnational-topographic-system-maps%2F9767&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANational+Topographic+System" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.nrcan.gc.ca/earth-sciences/geography/topographic-information/maps/national-topographic-system-maps/9767">"National Topographic System Maps"</a>. <i>www.nrcan.gc.ca</i>. 29 May 2007.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.nrcan.gc.ca&rft.atitle=National+Topographic+System+Maps&rft.date=2007-05-29&rft_id=https%3A%2F%2Fwww.nrcan.gc.ca%2Fearth-sciences%2Fgeography%2Ftopographic-information%2Fmaps%2Fnational-topographic-system-maps%2F9767&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANational+Topographic+System" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://ocul.on.ca/topomaps/about-maps/">"About The Maps"</a>. Ontario Council of University Libraries<span class="reference-accessdate">. Retrieved <span class="nowrap">31 July</span> 2021</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=About+The+Maps&rft.pub=Ontario+Council+of+University+Libraries&rft_id=https%3A%2F%2Focul.on.ca%2Ftopomaps%2Fabout-maps%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANational+Topographic+System" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://maps.canada.ca/czs/index-en.html">Government of Canada - Geospatial Data Extraction</a>. Retrieved 1 September 2021.</span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://open.canada.ca/data/en/dataset/055919c2-101e-4329-bfd7-1d0c333c0e62">Indexes of the National Topographic System of Canada</a> - See "Indexes in PDF format"</span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=National_Topographic_System&action=edit&section=5" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="http://www.nrcan.gc.ca/earth-sciences/geography/topographic-information/maps/9767">The National Topographic System</a></li> <li><a rel="nofollow" class="external text" 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standards">MARC country codes</a></li> <li><a href="/wiki/Standard_Geographical_Classification_code_(Canada)" title="Standard Geographical Classification code (Canada)">SGC codes</a> (Canada)</li> <li><a href="/wiki/UN_M49" title="UN M49">UN M.49</a> (UN)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Airport_code" title="Airport code">Airport codes</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/IATA_airport_code" title="IATA airport code">IATA airport code</a></li> <li><a href="/wiki/ICAO_airport_code" title="ICAO airport code">ICAO airport code</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Country_code" title="Country code">Country codes</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Country_code_top-level_domain" title="Country code top-level domain">IANA country code</a></li> <li><a href="/wiki/ISO_3166-1" title="ISO 3166-1">ISO 3166-1</a> <ul><li><a href="/wiki/ISO_3166-1_alpha-2" title="ISO 3166-1 alpha-2">alpha-2</a></li> <li><a href="/wiki/ISO_3166-1_alpha-3" title="ISO 3166-1 alpha-3">alpha-3</a></li> <li><a href="/wiki/ISO_3166-1_numeric" title="ISO 3166-1 numeric">numeric</a></li></ul></li> <li><a href="/wiki/List_of_aircraft_registration_prefixes" title="List of aircraft registration prefixes">Aircraft prefixes</a></li> <li><a href="/wiki/List_of_IOC_country_codes" title="List of IOC country codes">IOC country code</a></li> <li><a href="/wiki/List_of_FIFA_country_codes" title="List of FIFA country codes">FIFA country code</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Geodesic" title="Geodesic">Geodesic</a><br />place codes</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Discrete_global_grid" title="Discrete global grid">Global</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/C-squares" title="C-squares">C-squares</a></li> <li><a href="/wiki/Geohash" title="Geohash">Geohash</a></li> <li><a href="/wiki/Geohash-36" title="Geohash-36">Geohash-36</a></li> <li><a href="/wiki/World_Geographic_Reference_System" title="World Geographic Reference System">GEOREF</a></li> <li><a href="/wiki/International_Map_of_the_World" title="International Map of the World">International Map of the World</a> indexing system</li> <li><a href="/wiki/Mapcode" title="Mapcode">Mapcode</a></li> <li><a href="/wiki/Marsden_square" title="Marsden square">Marsden square</a></li> <li><a href="/wiki/Military_Grid_Reference_System" title="Military Grid Reference System">Military Grid Reference System</a></li> <li><a href="/wiki/Natural_Area_Code" title="Natural Area Code">Natural Area Code</a></li> <li><a href="/wiki/Open_Location_Code" title="Open Location Code">Open Location Code</a></li> <li><a href="/wiki/QDGC" title="QDGC">QDGC</a></li> <li><a href="/wiki/UN/LOCODE" title="UN/LOCODE">UN/LOCODE</a></li> <li><a href="/wiki/Universal_Transverse_Mercator_coordinate_system" title="Universal Transverse Mercator coordinate system">UTM</a></li> <li><a href="/wiki/What3words" title="What3words">what3words</a></li> <li><a href="/wiki/World_Meteorological_Organization_squares" title="World Meteorological Organization squares">WMO squares</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Regional</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/ICES_Statistical_Rectangles" title="ICES Statistical Rectangles">ICES Statistical Rectangles</a> (north-east Atlantic region)</li> <li><a href="/wiki/Irish_grid_reference_system" title="Irish grid reference system">Irish grid reference system</a></li> <li><a class="mw-selflink selflink">National Topographic System</a> (Canada)</li> <li><a href="/wiki/Ordnance_Survey_National_Grid" title="Ordnance Survey National Grid">Ordnance Survey National Grid</a> (UK)</li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Postal_code" title="Postal code">Postal codes</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Postcodes_in_Australia" title="Postcodes in Australia">Australian post codes</a></li> <li><a href="/wiki/C%C3%B3digo_de_Endere%C3%A7amento_Postal" title="Código de Endereçamento Postal">CEP</a> (Brazil)</li> <li><a href="/wiki/Eircode" class="mw-redirect" title="Eircode">Eircodes</a> (Republic of Ireland)</li> <li><a href="/wiki/Postcodes_in_New_Zealand" title="Postcodes in New Zealand">New Zealand post codes</a></li> <li><a href="/wiki/Postal_Index_Number" title="Postal Index Number">Postal Index Number</a> (India)</li> <li><a href="/wiki/UK_post_codes" class="mw-redirect" title="UK post codes">United Kingdom post codes</a></li> <li><a href="/wiki/ZIP_Code" title="ZIP Code">ZIP Code</a> (United States)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Telephony" title="Telephony">Telephony</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/List_of_ITU_letter_codes" title="List of ITU letter codes">ITU-R country codes</a></li> <li><a href="/wiki/List_of_country_calling_codes" title="List of country calling codes">ITU-T country calling codes</a></li> <li><a href="/wiki/Mobile_country_code" title="Mobile country code">ITU-T mobile calling codes</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Amateur_radio" title="Amateur radio">Amateur radio</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Maidenhead_Locator_System" title="Maidenhead Locator System">Maidenhead Locator System</a></li> <li>Historical : <a href="/wiki/QRA_locator" title="QRA locator">QRA locator</a></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" 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