There were 6,414 households, out of which 60.5% had children under the age of 18 living with them, 88.0% were married couples living together, 3.5% had a female householder with no husband present, and 7.1% were non-families. 5.4% of all households were made up of individuals, and 1.2% had someone living alone who was 65 years of age or older. The average household size was 3.35 and the average family size was 3.48. The average listing price for homes for sale in Southlake TX was $883,109 for the week ending Jan 8. 3,997 of the 6,602 occupied houses have nine or more rooms. 4,660 of the occupied houses have four or more bedrooms. 3,342 of the 6,602 occupied houses have two cars. 2,348 of these houses have three or more cars.