90th meridian west

The meridian 90° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, North America, the Gulf of Mexico, Central America, the Pacific Ocean, the Southern Ocean, and Antarctica to the South Pole.

In Antarctica, the meridian defines the western limit of Chile's territorial claim. The land further west is not claimed by any nation.

The 90th meridian west forms a great circle with the 90th meridian east, located midway between the Prime meridian and the 180th meridian; thus, the center of the Western Hemisphere is on this meridian.

In the United States, the Mississippi River runs close to the 90th meridian, crossing the meridian several times. The cities of St. Louis, Memphis and New Orleans are all close to the meridian.

One of the four 45 x 90 points is located in Rietbrock, Wisconsin, where the 45th parallel north intersects with the 90th meridian west, marking the halfway point between the 90° Latitude North, 180th Meridian East & West, 0° latitude, and 0° longitude.

From Pole to Pole
Starting at the North Pole and heading south to the South Pole, the 90th meridian west passes through:


 * {| class="wikitable plainrowheaders"

! scope="col" width="120" | Co-ordinates ! scope="col" | Country, territory or sea ! scope="col" | Notes ! scope="row" style="background:#b0e0e6;" | Arctic Ocean ! scope="row" | 🇨🇦 ! scope="row" style="background:#b0e0e6;" | Nansen Sound ! scope="row" | 🇨🇦 ! scope="row" style="background:#b0e0e6;" | Norwegian Bay ! scope="row" | 🇨🇦 ! scope="row" style="background:#b0e0e6;" | Norwegian Bay ! scope="row" | 🇨🇦 ! scope="row" style="background:#b0e0e6;" | Barrow Strait ! scope="row" | 🇨🇦 ! scope="row" style="background:#b0e0e6;" | Prince Regent Inlet ! scope="row" | 🇨🇦 ! scope="row" style="background:#b0e0e6;" | Gulf of Boothia ! scope="row" | 🇨🇦 ! scope="row" style="background:#b0e0e6;" | Hudson Bay ! scope="row" | 🇨🇦 ! scope="row" | 🇺🇸 ! scope="row" style="background:#b0e0e6;" | Lake Superior ! scope="row" | 🇺🇸 ! scope="row" style="background:#b0e0e6;" | Gulf of Mexico ! scope="row" | 🇲🇽 ! scope="row" | 🇬🇹 ! scope="row" | 🇸🇻 ! scope="row" style="background:#b0e0e6;" | Pacific Ocean ! scope="row" style="background:#b0e0e6;" | Southern Ocean ! scope="row" | Antarctica
 * style="background:#b0e0e6;" | 90°N, -90°W
 * style="background:#b0e0e6;" | 90°N, -90°W
 * style="background:#b0e0e6;" |
 * 81.9°N, -90°W
 * 81.9°N, -90°W
 * Nunavut — Ellesmere Island
 * style="background:#b0e0e6;" | 81.01667°N, -90°W
 * style="background:#b0e0e6;" | 81.01667°N, -90°W
 * style="background:#b0e0e6;" |
 * 80.51667°N, -90°W
 * 80.51667°N, -90°W
 * Nunavut — Axel Heiberg Island
 * style="background:#b0e0e6;" | 78.28333°N, -90°W
 * style="background:#b0e0e6;" | 78.28333°N, -90°W
 * style="background:#b0e0e6;" |
 * 77.36667°N, -90°W
 * 77.36667°N, -90°W
 * Nunavut — Graham Island
 * style="background:#b0e0e6;" | 77.21667°N, -90°W
 * style="background:#b0e0e6;" | 77.21667°N, -90°W
 * style="background:#b0e0e6;" |
 * 76.83333°N, -90°W
 * 76.83333°N, -90°W
 * Nunavut — North Kent Island and Devon Island
 * style="background:#b0e0e6;" | 74.56667°N, -90°W
 * style="background:#b0e0e6;" | 74.56667°N, -90°W
 * style="background:#b0e0e6;" |
 * 74.06667°N, -90°W
 * 74.06667°N, -90°W
 * Nunavut — Prince Leopold Island
 * style="background:#b0e0e6;" | 73.98333°N, -90°W
 * style="background:#b0e0e6;" | 73.98333°N, -90°W
 * style="background:#b0e0e6;" |
 * 72.06667°N, -90°W
 * 72.06667°N, -90°W
 * Nunavut — Baffin Island
 * style="background:#b0e0e6;" | 71.51667°N, -90°W
 * style="background:#b0e0e6;" | 71.51667°N, -90°W
 * style="background:#b0e0e6;" |
 * 69.11667°N, -90°W
 * 69.11667°N, -90°W
 * Nunavut — several islands including Helen Island, and the mainland
 * style="background:#b0e0e6;" | 63.76667°N, -90°W
 * style="background:#b0e0e6;" | 63.76667°N, -90°W
 * style="background:#b0e0e6;" |
 * -valign="top"
 * 57.01667°N, -90°W
 * Manitoba Ontario — from 56.21667°N, -90°W
 * 48.05°N, -90°W
 * 48.05°N, -90°W
 * Minnesota
 * style="background:#b0e0e6;" | 47.81667°N, -90°W
 * style="background:#b0e0e6;" | 47.81667°N, -90°W
 * style="background:#b0e0e6;" |
 * -valign="top"
 * 46.68333°N, -90°W
 * Michigan Wisconsin — from 46.31667°N, -90°W, passing through Reedsburg (at 43.53333°N, -90°W); crosses the 45th parallel north in Marathon County, Wisconsin, having one of the 45 x 90 points (at 45°N, -90°W) Illinois — from 42.5°N, -90°W Missouri — from 37.96667°N, -90°W, passing a mile and a half (2 km) east of Ste. Genevieve Arkansas — from 36°N, -90°W Tennessee — from 35.55°N, -90°W, passing through Memphis (at 35.13333°N, -90°W) Mississippi — from 35°N, -90°W, passing through Brandon (at 32.28333°N, -90°W) a suburb of Jackson Louisiana — from 31°N, -90°W, passing through New Orleans (at 30.04167°N, -90°W)
 * style="background:#b0e0e6;" | 29.21667°N, -90°W
 * style="background:#b0e0e6;" | 29.21667°N, -90°W
 * style="background:#b0e0e6;" |
 * -valign="top"
 * 21.16667°N, -90°W
 * Yucatán Campeche — from 20.46667°N, -90°W
 * 17.81667°N, -90°W
 * 17.81667°N, -90°W
 * Passing through Jalapa
 * 13.95°N, -90°W
 * 13.95°N, -90°W
 * Ahuachapán — Passing through of Western Tacuba district (at 13.9°N, -90°W), Central San Francisco Menéndez district (at 13.83333°N, -90°W), and finishing the Barra de Santiago canton (at 13.68333°N, -90°W).
 * -valign="top"
 * style="background:#b0e0e6;" | 13.68333°N, -90°W
 * style="background:#b0e0e6;" | Passing just west of Genovesa Island, Galápagos, 🇪🇨 (at 0.31667°N, -89.96667°W) Passing just east of Santa Fe Island, Galápagos, 🇪🇨 (at -0.81667°N, -90.03333°W)
 * style="background:#b0e0e6;" | -60°N, -90°W
 * style="background:#b0e0e6;" | -60°N, -90°W
 * style="background:#b0e0e6;" |
 * -valign="top"
 * -72.46667°N, -90°W
 * Border between unclaimed territory (to the west) and Antártica Chilena Province (to the east), claimed by 🇨🇱
 * }
 * }