USA.com / California / Sonoma County / Cotati, CA / 94931 / Population and Races / Historical Household and Family Data
94931 Zip Code Historical Household and Family Data
ACS 2010-2014 data
Total population: 8,570
| 94931 Zip Code | California | U.S. | |
| Total Households | 3,327, 100% | 12,617,280 | 116,211,092 |
| Average Household Size | 2.57, see rank | 2.95 | 2.63 |
| 1 Person Households | 836, 25.13%, see rank | 24.10% | 27.57% |
| 2 or More Person Households | 2,491, 74.87%, see rank | 75.90% | 72.43% |
| Family Households (Families) | 2,109, 63.39%, see rank | 68.69% | 66.22% |
| Average Family Size | 3.18, see rank | 3.67 | 3.32 |
| Married-Couple Family | 1,532, 46.05%, see rank | 49.11% | 48.42% |
| Nonfamily Households | 1,218, 36.61%, see rank | 31.31% | 33.78% |
US Census 2010 data
Total population: 8,470
| 94931 Zip Code | California | U.S. | |
| Total Households | 3,481, 100% | 12,577,498 | 116,716,292 |
| Average Household Size | 2.42, see rank | 2.90 | 2.58 |
| 1 Person Households | 964, 27.69%, see rank | 23.29% | 26.74% |
| 2 or More Person Households | 2,517, 72.31%, see rank | 76.71% | 73.26% |
| Family Households (Families) | 2,054, 59.01%, see rank | 68.71% | 66.43% |
| Average Family Size | 2.97, see rank | 3.45 | 3.14 |
| Married-Couple Family | 1,429, 41.05%, see rank | 49.40% | 48.42% |
| Nonfamily Households | 1,427, 40.99%, see rank | 31.29% | 33.57% |
ACS 2008-2012 data
Total population: 8,578
| 94931 Zip Code | California | U.S. | |
| Total Households | 3,489, 100% | 12,466,331 | 115,226,802 |
| Average Household Size | 2.45, see rank | 2.93 | 2.61 |
| 1 Person Households | 1,041, 29.84%, see rank | 24.31% | 27.45% |
| 2 or More Person Households | 2,448, 70.16%, see rank | 75.69% | 72.55% |
| Family Households (Families) | 2,100, 60.19%, see rank | 68.59% | 66.47% |
| Average Family Size | 3.12, see rank | 3.65 | 3.29 |
| Married-Couple Family | 1,509, 43.25%, see rank | 49.35% | 48.97% |
| Nonfamily Households | 1,389, 39.81%, see rank | 31.41% | 33.53% |
US Census 2000 data
Total population: 7,916
| 94931 Zip Code | California | U.S. | |
| Total Households | 3,091, 100% | 11,502,870 | 105,480,101 |
| Average Household Size | 2.55, see rank | 2.87 | 2.59 |
| 1 Person Households | 743, 24.04%, see rank | 23.54% | 25.82% |
| 2 or More Person Households | 2,348, 75.96%, see rank | 76.46% | 74.18% |
| Family Households (Families) | 1,961, 63.44%, see rank | 68.85% | 68.06% |
| Average Family Size | 3.04, see rank | 3.43 | 3.14 |
| Married-Couple Family | 1,400, 45.29%, see rank | 51.09% | 51.66% |
| Nonfamily Households | 1,130, 36.56%, see rank | 31.15% | 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.