USA.com / Texas / San Marcos, TX / 78666 / Population and Races / Historical Household and Family Data
78666 Zip Code Historical Household and Family Data
ACS 2010-2014 data
Total population: 68,704
| 78666 Zip Code | Texas | U.S. | |
| Total Households | 24,276, 100% | 9,013,582 | 116,211,092 |
| Average Household Size | 2.49, see rank | 2.83 | 2.63 |
| 1 Person Households | 7,425, 30.59%, see rank | 24.94% | 27.57% |
| 2 or More Person Households | 16,851, 69.41%, see rank | 75.06% | 72.43% |
| Family Households (Families) | 11,303, 46.56%, see rank | 69.65% | 66.22% |
| Average Family Size | 3.36, see rank | 3.51 | 3.32 |
| Married-Couple Family | 7,047, 29.03%, see rank | 50.22% | 48.42% |
| Nonfamily Households | 12,973, 53.44%, see rank | 30.35% | 33.78% |
US Census 2010 data
Total population: 63,836
| 78666 Zip Code | Texas | U.S. | |
| Total Households | 22,874, 100% | 8,922,933 | 116,716,292 |
| Average Household Size | 2.44, see rank | 2.75 | 2.58 |
| 1 Person Households | 6,832, 29.87%, see rank | 24.24% | 26.74% |
| 2 or More Person Households | 16,042, 70.13%, see rank | 75.76% | 73.26% |
| Family Households (Families) | 10,807, 47.25%, see rank | 69.90% | 66.43% |
| Average Family Size | 3.16, see rank | 3.31 | 3.14 |
| Married-Couple Family | 7,211, 31.52%, see rank | 50.60% | 48.42% |
| Nonfamily Households | 12,067, 52.75%, see rank | 30.10% | 33.57% |
ACS 2008-2012 data
Total population: 63,255
| 78666 Zip Code | Texas | U.S. | |
| Total Households | 22,018, 100% | 8,782,598 | 115,226,802 |
| Average Household Size | 2.50, see rank | 2.80 | 2.61 |
| 1 Person Households | 7,201, 32.71%, see rank | 24.85% | 27.45% |
| 2 or More Person Households | 14,817, 67.29%, see rank | 75.15% | 72.55% |
| Family Households (Families) | 10,535, 47.85%, see rank | 69.92% | 66.47% |
| Average Family Size | 3.43, see rank | 3.47 | 3.29 |
| Married-Couple Family | 6,841, 31.07%, see rank | 50.70% | 48.97% |
| Nonfamily Households | 11,483, 52.15%, see rank | 30.08% | 33.53% |
US Census 2000 data
Total population: 51,452
| 78666 Zip Code | Texas | U.S. | |
| Total Households | 17,640, 100% | 7,393,354 | 105,480,101 |
| Average Household Size | 2.53, see rank | 2.74 | 2.59 |
| 1 Person Households | 4,608, 26.12%, see rank | 23.70% | 25.82% |
| 2 or More Person Households | 13,032, 73.88%, see rank | 76.30% | 74.18% |
| Family Households (Families) | 9,403, 53.30%, see rank | 70.98% | 68.06% |
| Average Family Size | 3.21, see rank | 3.28 | 3.14 |
| Married-Couple Family | 6,805, 38.58%, see rank | 53.96% | 51.66% |
| Nonfamily Households | 8,237, 46.70%, 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.