Lexington is a city in Cleveland County, Oklahoma, United States. The city population was 2,152 at the 2010 census.
Lexington is located in southern Cleveland County at 35°0′55″N 97°20′10″W. It is bordered on the west by the Canadian River, which forms the McClain County line. The city of Purcell is directly across the river from Lexington, connected by U.S. Route 77. US 77 leads north from Lexington 16 miles (26 km) to Norman and 38 miles (61 km) to the center of Oklahoma City.
According to the United States Census Bureau, Lexington has a total area of 2.4 square miles (6.2 km2), all land.
As of the census of 2010 there were 2,152 people, 761 households, and 541 families residing in the city. The population density was 979.3 people per square mile (378.1/km2). There were 842 housing units at an average density of 395.3 per square mile (152.6/km2). The racial makeup of the city was 85.62% White, 0.58% African American, 6.47% Native American, 0.10% Asian, 3.74% from other races, and 3.50% from two or more races. Hispanic or Latino of any race were 7.29% of the population.