Williamson County Historical Household and Family Data
ACS 2010-2014 data
Total population: 457,218
| Williamson County | Texas | U.S. | |
| Total Households | 158,283, 100% | 9,013,582 | 116,211,092 |
| Average Household Size | 2.86, see rank | 2.83 | 2.63 |
| 1 Person Households | 35,100, 22.18%, see rank | 24.94% | 27.57% |
| 2 or More Person Households | 123,183, 77.82%, see rank | 75.06% | 72.43% |
| Family Households (Families) | 115,045, 72.68%, see rank | 69.65% | 66.22% |
| Average Family Size | 3.45, see rank | 3.51 | 3.32 |
| Married-Couple Family | 92,339, 58.34%, see rank | 50.22% | 48.42% |
| Nonfamily Households | 43,238, 27.32%, see rank | 30.35% | 33.78% |
US Census 2010 data
Total population: 422,679
| Williamson County | Texas | U.S. | |
| Total Households | 152,606, 100% | 8,922,933 | 116,716,292 |
| Average Household Size | 2.74, see rank | 2.75 | 2.58 |
| 1 Person Households | 32,315, 21.18%, see rank | 24.24% | 26.74% |
| 2 or More Person Households | 120,291, 78.82%, see rank | 75.76% | 73.26% |
| Family Households (Families) | 111,514, 73.07%, see rank | 69.90% | 66.43% |
| Average Family Size | 3.20, see rank | 3.31 | 3.14 |
| Married-Couple Family | 88,423, 57.94%, see rank | 50.60% | 48.42% |
| Nonfamily Households | 41,092, 26.93%, see rank | 30.10% | 33.57% |
ACS 2008-2012 data
Total population: 426,296
| Williamson County | Texas | U.S. | |
| Total Households | 151,352, 100% | 8,782,598 | 115,226,802 |
| Average Household Size | 2.79, see rank | 2.80 | 2.61 |
| 1 Person Households | 33,160, 21.91%, see rank | 24.85% | 27.45% |
| 2 or More Person Households | 118,192, 78.09%, see rank | 75.15% | 72.55% |
| Family Households (Families) | 110,495, 73.01%, see rank | 69.92% | 66.47% |
| Average Family Size | 3.36, see rank | 3.47 | 3.29 |
| Married-Couple Family | 88,889, 58.73%, see rank | 50.70% | 48.97% |
| Nonfamily Households | 40,857, 26.99%, see rank | 30.08% | 33.53% |
ACS 2006-2010 data
Total population: 391,715
| Williamson County | Texas | U.S. | |
| Total Households | 142,110, 100% | 8,539,206 | 114,235,996 |
| Average Household Size | 2.73, see rank | 2.78 | 2.59 |
| 1 Person Households | 29,885, 21.03%, see rank | 24.69% | 27.24% |
| 2 or More Person Households | 112,225, 78.97%, see rank | 75.31% | 72.76% |
| Family Households (Families) | 104,878, 73.80%, see rank | 70.17% | 66.75% |
| Average Family Size | 3.26, see rank | 3.43 | 3.25 |
| Married-Couple Family | 85,071, 59.86%, see rank | 51.37% | 49.60% |
| Nonfamily Households | 37,232, 26.20%, see rank | 29.83% | 33.25% |
ACS 2005-2009 data
Total population: 372,438
| Williamson County | Texas | U.S. | |
| Total Households | 124,032, 100% | 8,269,046 | 112,611,029 |
| Average Household Size | 2.97, see rank | 2.81 | 2.60 |
| 1 Person Households | 26,353, 21.25%, see rank | 24.97% | 27.32% |
| 2 or More Person Households | 97,679, 78.75%, see rank | 75.03% | 72.68% |
| Family Households (Families) | 91,894, 74.09%, see rank | 69.94% | 66.67% |
| Average Family Size | 3.55, see rank | 3.47 | 3.27 |
| Married-Couple Family | 75,239, 60.66%, see rank | 51.40% | 49.71% |
| Nonfamily Households | 32,138, 25.91%, see rank | 30.06% | 33.33% |
US Census 2000 data
Total population: 249,967
| Williamson County | Texas | U.S. | |
| Total Households | 86,766, 100% | 7,393,354 | 105,480,101 |
| Average Household Size | 2.82, see rank | 2.74 | 2.59 |
| 1 Person Households | 15,264, 17.59%, see rank | 23.70% | 25.82% |
| 2 or More Person Households | 71,502, 82.41%, see rank | 76.30% | 74.18% |
| Family Households (Families) | 66,991, 77.21%, see rank | 70.98% | 68.06% |
| Average Family Size | 3.21, see rank | 3.28 | 3.14 |
| Married-Couple Family | 55,519, 63.99%, see rank | 53.96% | 51.66% |
| Nonfamily Households | 19,775, 22.79%, see rank | 29.02% | 31.94% |
* ACS stands for U.S. Census American Community Survey. According to the U.S. Census, if the date is a range, you can interpret the data as an average of the period of time.