Utah Borders: States, Map & Complete Guide

Idaho and Utah share a border along Utah's entire northern edge. The boundary follows the 42nd parallel north latitude, creating a straight east-west line.

The Utah-Idaho border extends for about 150 miles from Nevada in the west to Wyoming in the east. The border follows the 42nd parallel surveyed in the 1800s. Utah counties along this border include Box Elder, Cache, and Rich. On the Idaho side, Oneida, Franklin, and Bear Lake counties sit along the border. Logan, Utah sits close to this border in Cache Valley. The border region includes mountains and valleys in the Wasatch Range.

Wyoming borders Utah in the northeastern region. The boundary consists of straight surveyed lines that create a distinctive shape where the two states meet.

The Utah-Wyoming border runs for about 175 miles from Idaho in the north to Colorado in the south. The border follows meridian and parallel lines surveyed when the territories were established. Utah counties along this border include Rich, Summit, Daggett, and Uintah. The Uinta Mountains span both states in this region. The border area is mountainous and includes portions of Ashley National Forest and high-elevation terrain.

Colorado forms Utah's entire eastern border. The boundary follows a straight north-south meridian line and includes the famous Four Corners point in the southeast.

The Utah-Colorado border extends for about 275 miles from Wyoming in the north to Arizona and New Mexico at Four Corners in the south. The border follows the 109th meridian west longitude, creating a perfectly straight line. Utah counties along this border include Uintah, Grand, and San Juan. The border crosses diverse terrain from high plateaus in the north to red rock canyon country near Four Corners. Moab, Utah sits about 20 miles from the Colorado border.

Arizona borders Utah along the southern edge. The Colorado River forms part of this boundary in the west, while a straight surveyed line continues in the east to Four Corners.

The Utah-Arizona border runs for about 275 miles from Nevada in the west to Four Corners in the east. The Colorado River creates a natural winding boundary for about 150 miles in the western section as it flows through Glen Canyon and Lake Powell. East of the river, the border follows the 37th parallel north latitude. Utah counties along this border include Washington, Kane, and San Juan. Lake Powell, created by Glen Canyon Dam, straddles the border. The Four Corners Monument sits at the southeastern point.

Nevada forms Utah's entire western border. The boundary follows straight surveyed lines running north-south through desert terrain.

The Utah-Nevada border extends for about 365 miles from Idaho in the north to Arizona in the south. The border follows meridian lines surveyed in the 1800s. Utah counties along this border include Box Elder, Tooele, Juab, Millard, Beaver, Iron, and Washington. The border crosses the Great Basin desert, salt flats, and mountain ranges. The Bonneville Salt Flats are near this border in northwestern Utah. St. George, Utah sits about 40 miles from the Nevada border.