Sonoma County Historical Household and Family Data
ACS 2010-2014 data
Total population: 491,790
| Sonoma County | California | U.S. | |
| Total Households | 186,935, 100% | 12,617,280 | 116,211,092 |
| Average Household Size | 2.58, see rank | 2.95 | 2.63 |
| 1 Person Households | 52,737, 28.21%, see rank | 24.10% | 27.57% |
| 2 or More Person Households | 134,198, 71.79%, see rank | 75.90% | 72.43% |
| Family Households (Families) | 117,825, 63.03%, see rank | 68.69% | 66.22% |
| Average Family Size | 3.30, see rank | 3.67 | 3.32 |
| Married-Couple Family | 88,252, 47.21%, see rank | 49.11% | 48.42% |
| Nonfamily Households | 69,110, 36.97%, see rank | 31.31% | 33.78% |
US Census 2010 data
Total population: 483,878
| Sonoma County | California | U.S. | |
| Total Households | 185,825, 100% | 12,577,498 | 116,716,292 |
| Average Household Size | 2.55, see rank | 2.90 | 2.58 |
| 1 Person Households | 50,670, 27.27%, see rank | 23.29% | 26.74% |
| 2 or More Person Households | 135,155, 72.73%, see rank | 76.71% | 73.26% |
| Family Households (Families) | 117,114, 63.02%, see rank | 68.71% | 66.43% |
| Average Family Size | 3.11, see rank | 3.45 | 3.14 |
| Married-Couple Family | 87,539, 47.11%, see rank | 49.40% | 48.42% |
| Nonfamily Households | 68,711, 36.98%, see rank | 31.29% | 33.57% |
ACS 2008-2012 data
Total population: 483,456
| Sonoma County | California | U.S. | |
| Total Households | 184,502, 100% | 12,466,331 | 115,226,802 |
| Average Household Size | 2.56, see rank | 2.93 | 2.61 |
| 1 Person Households | 51,530, 27.93%, see rank | 24.31% | 27.45% |
| 2 or More Person Households | 132,972, 72.07%, see rank | 75.69% | 72.55% |
| Family Households (Families) | 116,615, 63.21%, see rank | 68.59% | 66.47% |
| Average Family Size | 3.27, see rank | 3.65 | 3.29 |
| Married-Couple Family | 87,570, 47.46%, see rank | 49.35% | 48.97% |
| Nonfamily Households | 67,887, 36.79%, see rank | 31.41% | 33.53% |
ACS 2006-2010 data
Total population: 474,047
| Sonoma County | California | U.S. | |
| Total Households | 184,033, 100% | 12,392,852 | 114,235,996 |
| Average Household Size | 2.52, see rank | 2.89 | 2.59 |
| 1 Person Households | 51,122, 27.78%, see rank | 24.39% | 27.24% |
| 2 or More Person Households | 132,911, 72.22%, see rank | 75.61% | 72.76% |
| Family Households (Families) | 116,699, 63.41%, see rank | 68.55% | 66.75% |
| Average Family Size | 3.21, see rank | 3.60 | 3.25 |
| Married-Couple Family | 88,656, 48.17%, see rank | 49.76% | 49.60% |
| Nonfamily Households | 67,334, 36.59%, see rank | 31.45% | 33.25% |
ACS 2005-2009 data
Total population: 464,218
| Sonoma County | California | U.S. | |
| Total Households | 179,061, 100% | 12,187,191 | 112,611,029 |
| Average Household Size | 2.53, see rank | 2.91 | 2.60 |
| 1 Person Households | 49,652, 27.73%, see rank | 24.57% | 27.32% |
| 2 or More Person Households | 129,409, 72.27%, see rank | 75.43% | 72.68% |
| Family Households (Families) | 113,745, 63.52%, see rank | 68.38% | 66.67% |
| Average Family Size | 3.22, see rank | 3.63 | 3.27 |
| Married-Couple Family | 86,875, 48.52%, see rank | 49.93% | 49.71% |
| Nonfamily Households | 65,316, 36.48%, see rank | 31.62% | 33.33% |
US Census 2000 data
Total population: 458,614
| Sonoma County | California | U.S. | |
| Total Households | 172,403, 100% | 11,502,870 | 105,480,101 |
| Average Household Size | 2.60, see rank | 2.87 | 2.59 |
| 1 Person Households | 44,340, 25.72%, see rank | 23.54% | 25.82% |
| 2 or More Person Households | 128,063, 74.28%, see rank | 76.46% | 74.18% |
| Family Households (Families) | 112,397, 65.19%, see rank | 68.85% | 68.06% |
| Average Family Size | 3.12, see rank | 3.43 | 3.14 |
| Married-Couple Family | 86,712, 50.30%, see rank | 51.09% | 51.66% |
| Nonfamily Households | 60,006, 34.81%, 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.