Of the 351 households 37.9% had children under the age of 18 living with them, 66.4% were married couples living together, 7.4% had a female householder with no husband present, and 22.2% were non-families. 18.5% of households were one person and 9.1% were one person aged 65 or older. The average household size was 2.68 and the average family size was 3.07. Tontitown has seen a very rapid growth in recent years as indicated by a 160% growth in population between the 2000 and 2010 censuses.