Wichita Falls is a city in Wichita County, Texas, United States. As of the 2000 census, the city had a total population of 104,197. It is the principal city of the Wichita Falls Metropolitan Statistical Area, which encompasses all of Archer, Clay and Wichita counties. Based on a July 1, 2006 estimate, the metropolitan area has a population of 145,528. The city is the county seat of Wichita County. Sheppard Air Force Base, a United States Air Force base, is located in Wichita Falls.

As of the census of 2000, there were 104,197 people, 37,970 households, and 24,984 families residing in the city. The population density was 569.1/km² (1,474.1/mi²). There were 41,916 housing units at an average density of 228.9/km² (593.0/mi²). The racial makeup of the city was 75.11% White, 12.40% African American, 0.86% Native American, 2.20% Asian, 0.10% Pacific Islander, 6.39% from other races, and 2.95% from two or more races. Persons of Hispanic or Latino origin accounted for 13.98% of the population. The city is about 15 miles south of the border with Oklahoma, 115 miles northwest of Fort Worth, and 140 miles southwest of Oklahoma City. According to the United States Census Bureau, the city has a total area of 183.1 km² (70.7 mi²). 183.1 km² (70.7 mi²) of it is land and 0.1 km² (0.04 mi²) of it (0.03%) is water.