List of extreme points of U.S. states and territories

Download coordinates as: Extreme points are portions of a region which are further north, south, east, or west than any other.

This is a list of extreme points in U.S. states, territories, and the District of Columbia.

[1] Although many borders were initially defined by treaty or other agreement to be along a specific line of latitude or longitude, inaccuracies with surveying equipment/techniques caused the surveyed lines to deviate slightly from the true boundaries.

Even as equipment/techniques improved, the initial surveyed line still remains the official border,[2] which is why the extreme points may be either side of the agreed-upon line.

Land:35°00′28″N 88°11′35″W / 35.00778°N 88.19306°W / 35.00778; -88.19306Tennessee border on an unnamed island in Pickwick Lake By direction, land:55°17′24″N 129°59′40″W / 55.29000°N 129.99444°W / 55.29000; -129.99444Camp Point, in the Misty Fjords National Monument Wilderness, east of Ketchikan By longitude:51°57′15″N 179°46′42″E / 51.95417°N 179.77833°E / 51.95417; 179.77833 (AK-E Pochnoi Point)Pochnoi Point[5] on Semisopochnoi Island in the Aleutian Islands By longitude:51°16′15″N 179°08′51″W / 51.27083°N 179.14750°W / 51.27083; -179.14750 (AK-W Amatignak Island)Amatignak Island[7] in the Aleutian Islands Excluding disputed islands:14°09′18″S 169°36′45″W / 14.15500°S 169.61250°W / -14.15500; -169.61250 Faumasili Point, Olosega Island Excluding disputed islands:14°19′15″S 170°50′49″W / 14.32083°S 170.84694°W / -14.32083; -170.84694Luania Rocks, off Tutuila Island Land:35°53′56″N 89°38′49″W / 35.89889°N 89.64694°W / 35.89889; -89.64694Barfield Bar, an island in the Mississippi River east of Armorel Land:40°58′51″N 73°37′47″W / 40.98083°N 73.62972°W / 40.98083; -73.62972Great Captain Island Land:38°48′12″N 77°01′27″W / 38.80333°N 77.02417°W / 38.80333; -77.02417Western end of Oxon Hill Farm Land:38°46′54″N 87°29′46″W / 38.78167°N 87.49611°W / 38.78167; -87.49611Indiana border southeast of Russellville Land:41°45′39″N 86°06′30″W / 41.76083°N 86.10833°W / 41.76083; -86.10833Michigan border north of Granger Land:41°59′39″N 90°08′33″W / 41.99417°N 90.14250°W / 41.99417; -90.14250Unnamed island in the Mississippi River east of Andover Land:37°54′44″N 75°53′01″W / 37.91222°N 75.88361°W / 37.91222; -75.88361Watkins Point, southwest of Crisfield Land:48°15′46″N 88°15′46″W / 48.26278°N 88.26278°W / 48.26278; -88.26278Gull Islands Land:42°58′29″N 82°25′06″W / 42.97472°N 82.41833°W / 42.97472; -82.41833Shore of the St. Clair River in Port Huron Land:48°00′20″N 89°29′31″W / 48.00556°N 89.49194°W / 48.00556; -89.49194Pigeon Point Land:40°59′50″N 73°54′09″W / 40.99722°N 73.90250°W / 40.99722; -73.90250Station Rock, The Palisades in Alpine, Bergen County Land:42°08′22″N 79°45′43″W / 42.13944°N 79.76194°W / 42.13944; -79.76194Pennsylvania border west of Mina Land:41°58′38″N 80°31′10″W / 41.97722°N 80.51944°W / 41.97722; -80.51944Pennsylvania border where it meets Lake Erie Land:42°16′10″N 79°45′43″W / 42.26944°N 79.76194°W / 42.26944; -79.76194New York border where it meets Lake Erie Land:39°44′39″N 80°31′10″W / 39.74417°N 80.51944°W / 39.74417; -80.51944West Virginia border west of New Freeport Land:41°19′44″N 71°53′33″W / 41.32889°N 71.89250°W / 41.32889; -71.89250Connecticut border on Sandy Point Island Land:36°40′41″N 88°03′31″W / 36.67806°N 88.05861°W / 36.67806; -88.05861Land Between the Lakes National Recreation Area, northwest of Dover Excluding disputed islands:[h]0°22′32″S 159°59′05″W / 0.37556°S 159.98472°W / -0.37556; -159.98472Jarvis Island Excluding disputed islands:28°11′49″N 177°23′51″W / 28.19694°N 177.39750°W / 28.19694; -177.39750Sand Island, Midway Atoll Land:44°02′50″N 73°25′27″W / 44.04722°N 73.42417°W / 44.04722; -73.42417Crane Point on Lake Champlain, northwest of Bridport Land:47°04′51″N 90°43′46″W / 47.08083°N 90.72944°W / 47.08083; -90.72944Devils Island, Apostle Islands Land:45°23′40″N 86°45′50″W / 45.39444°N 86.76389°W / 45.39444; -86.76389Fish Island

The 49th parallel was agreed to be the border between the United States and British North America (later Canada) from Lake of the Woods to the Strait of Juan de Fuca in the Treaty of 1818 and Oregon Treaty . However, the true boundary line as surveyed deviates several seconds from the true parallel, as seen in this significantly exaggerated depiction