111th meridian west

111°

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111th meridian west

The meridian 111° west of Greenwich is a line of longitude ^[1] that extends from the North Pole across the Arctic Ocean, North America, the Pacific Ocean, the Southern Ocean, and Antarctica to the South Pole.

The 111th meridian west forms a great circle with the 69th meridian east.

In the United States, the Western border of Wyoming with Montana, Idaho, and Utah lies on the meridian 34° west of Washington, which is a couple of miles west of the meridian 111° west of Greenwich.

From Pole to Pole

Starting at the North Pole and heading south to the South Pole, the 111th meridian west passes through:

Co-ordinates	Country, territory or sea	Notes
90°0′N111°0′W / 90.000°N 111.000°W / 90.000; -111.000 (Arctic Ocean)	Arctic Ocean
78°42′N111°0′W / 78.700°N 111.000°W / 78.700; -111.000 (Canada)	Canada	Northwest Territories — Borden Island
78°22′N111°0′W / 78.367°N 111.000°W / 78.367; -111.000 (Wilkins Strait)	Wilkins Strait
78°6′N111°0′W / 78.100°N 111.000°W / 78.100; -111.000 (Canada)	Canada	Northwest Territories — Mackenzie King Island
77°25′N111°0′W / 77.417°N 111.000°W / 77.417; -111.000	Unnamed waterbody
75°32′N111°0′W / 75.533°N 111.000°W / 75.533; -111.000 (Canada)	Canada	Northwest Territories — Melville Island
74°37′N111°0′W / 74.617°N 111.000°W / 74.617; -111.000 (Parry Channel)	Parry Channel	Viscount Melville Sound
72°25′N111°0′W / 72.417°N 111.000°W / 72.417; -111.000 (Canada)	Canada	Northwest Territories — Victoria Island Nunavut — from 70°0′N111°0′W / 70.000°N 111.000°W / 70.000; -111.000 (Nunavut) on Victoria Island, and Edinburgh Island
68°28′N111°0′W / 68.467°N 111.000°W / 68.467; -111.000 (Coronation Gulf)	Coronation Gulf
67°53′N111°0′W / 67.883°N 111.000°W / 67.883; -111.000 (Canada)	Canada	Nunavut — Hepburn Island and the mainland Northwest Territories — from 65°30′N111°0′W / 65.500°N 111.000°W / 65.500; -111.000 (Northwest Territories) , passing through the Great Slave Lake Alberta — from 60°0′N111°0′W / 60.000°N 111.000°W / 60.000; -111.000 (Alberta) , passing through Lake Athabasca
49°0′N111°0′W / 49.000°N 111.000°W / 49.000; -111.000 (United States)	United States	Montana Wyoming — from 45°0′N111°0′W / 45.000°N 111.000°W / 45.000; -111.000 (Wyoming) Utah — from 41°1′N111°0′W / 41.017°N 111.000°W / 41.017; -111.000 (Utah) Arizona — from 37°0′N111°0′W / 37.000°N 111.000°W / 37.000; -111.000 (Arizona) , passing just west of Tucson at 32°13′N110°55′W / 32.217°N 110.917°W / 32.217; -110.917 (Tucson)
31°20′N111°0′W / 31.333°N 111.000°W / 31.333; -111.000 (Mexico)	Mexico	Sonora — passing just west of Hermosillo at 29°6′N110°57′W / 29.100°N 110.950°W / 29.100; -110.950 (Arizona)
27°58′N111°0′W / 27.967°N 111.000°W / 27.967; -111.000 (Gulf of California)	Gulf of California
25°25′N111°0′W / 25.417°N 111.000°W / 25.417; -111.000 (Mexico)	Mexico	Baja California Sur
24°4′N111°0′W / 24.067°N 111.000°W / 24.067; -111.000 (Pacific Ocean)	Pacific Ocean
18°50′N111°0′W / 18.833°N 111.000°W / 18.833; -111.000 (Mexico)	Mexico	Socorro Island in the Revillagigedo Islands, Colima
18°44′N111°0′W / 18.733°N 111.000°W / 18.733; -111.000 (Pacific Ocean)	Pacific Ocean
60°0′S111°0′W / 60.000°S 111.000°W / -60.000; -111.000 (Southern Ocean)	Southern Ocean
74°13′S111°0′W / 74.217°S 111.000°W / -74.217; -111.000 (Antarctica)	Antarctica	Unclaimed territory

See also

• 110th meridian west
• 112th meridian west

References

1. "What is longitude?". oceanservice.noaa.gov. Retrieved 1 July 2025.