Willow Park is a city in Parker County, Texas, United States. The population was 3,982 at the 2010 census.Willow Park was the location of Trinity Meadows Race Track, one of the first horse racing tracks opened once Texas legalized parimutuel betting. However, it was never seriously considered for upgrade to first-class status, and once Lone Star Park opened, Trinity Meadows Race Track closed. It is home to Squaw Creek golf course, located just off Ranch House Road.KTVT, Channel 11 in Fort Worth operates a 1 million watt doppler radar in Willow Park.GeographyWillow Park is located at .According to the United States Census Bureau, the city has a total area of 6.3sqmi, of which, 6.2sqmi of it is land and 0.1sqmi of it is water. The population of Willow Park's corporate limits is 5,100.DemographicsAs of the census of 2000, there were 2,849 people, 991 households, and 885 families residing in the city. The population density was 462.9 people per square mile (178.9/km²). There were 1,010 housing units at an average density of 164.1 per square mile (63.4/km²). The racial makeup of the city was 96.31% White, 0.32% African American, 0.74% Native American, 0.46% Asian, 1.26% from other races, and 0.91% from two or more races. Hispanic or Latino of any race were 3.55% of the population.