Marin County Historical Household and Family Data
ACS 2010-2014 data
Total population: 256,802
| Marin County | California | U.S. | |
| Total Households | 103,034, 100% | 12,617,280 | 116,211,092 |
| Average Household Size | 2.41, see rank | 2.95 | 2.63 |
| 1 Person Households | 31,662, 30.73%, see rank | 24.10% | 27.57% |
| 2 or More Person Households | 71,372, 69.27%, see rank | 75.90% | 72.43% |
| Family Households (Families) | 64,194, 62.30%, see rank | 68.69% | 66.22% |
| Average Family Size | 3.10, see rank | 3.67 | 3.32 |
| Married-Couple Family | 51,553, 50.03%, see rank | 49.11% | 48.42% |
| Nonfamily Households | 38,840, 37.70%, see rank | 31.31% | 33.78% |
US Census 2010 data
Total population: 252,409
| Marin County | California | U.S. | |
| Total Households | 103,210, 100% | 12,577,498 | 116,716,292 |
| Average Household Size | 2.36, see rank | 2.90 | 2.58 |
| 1 Person Households | 31,746, 30.76%, see rank | 23.29% | 26.74% |
| 2 or More Person Households | 71,464, 69.24%, see rank | 76.71% | 73.26% |
| Family Households (Families) | 62,653, 60.70%, see rank | 68.71% | 66.43% |
| Average Family Size | 2.94, see rank | 3.45 | 3.14 |
| Married-Couple Family | 49,659, 48.11%, see rank | 49.40% | 48.42% |
| Nonfamily Households | 40,557, 39.30%, see rank | 31.29% | 33.57% |
ACS 2008-2012 data
Total population: 252,759
| Marin County | California | U.S. | |
| Total Households | 103,152, 100% | 12,466,331 | 115,226,802 |
| Average Household Size | 2.36, see rank | 2.93 | 2.61 |
| 1 Person Households | 31,752, 30.78%, see rank | 24.31% | 27.45% |
| 2 or More Person Households | 71,400, 69.22%, see rank | 75.69% | 72.55% |
| Family Households (Families) | 63,720, 61.77%, see rank | 68.59% | 66.47% |
| Average Family Size | 3.03, see rank | 3.65 | 3.29 |
| Married-Couple Family | 51,222, 49.66%, see rank | 49.35% | 48.97% |
| Nonfamily Households | 39,432, 38.23%, see rank | 31.41% | 33.53% |
ACS 2006-2010 data
Total population: 248,601
| Marin County | California | U.S. | |
| Total Households | 102,727, 100% | 12,392,852 | 114,235,996 |
| Average Household Size | 2.33, see rank | 2.89 | 2.59 |
| 1 Person Households | 32,770, 31.90%, see rank | 24.39% | 27.24% |
| 2 or More Person Households | 69,957, 68.10%, see rank | 75.61% | 72.76% |
| Family Households (Families) | 62,241, 60.59%, see rank | 68.55% | 66.75% |
| Average Family Size | 3.03, see rank | 3.60 | 3.25 |
| Married-Couple Family | 50,023, 48.70%, see rank | 49.76% | 49.60% |
| Nonfamily Households | 40,486, 39.41%, see rank | 31.45% | 33.25% |
ACS 2005-2009 data
Total population: 246,711
| Marin County | California | U.S. | |
| Total Households | 101,086, 100% | 12,187,191 | 112,611,029 |
| Average Household Size | 2.35, see rank | 2.91 | 2.60 |
| 1 Person Households | 32,340, 31.99%, see rank | 24.57% | 27.32% |
| 2 or More Person Households | 68,746, 68.01%, see rank | 75.43% | 72.68% |
| Family Households (Families) | 61,034, 60.38%, see rank | 68.38% | 66.67% |
| Average Family Size | 3.06, see rank | 3.63 | 3.27 |
| Married-Couple Family | 49,671, 49.14%, see rank | 49.93% | 49.71% |
| Nonfamily Households | 40,052, 39.62%, see rank | 31.62% | 33.33% |
US Census 2000 data
Total population: 247,289
| Marin County | California | U.S. | |
| Total Households | 100,650, 100% | 11,502,870 | 105,480,101 |
| Average Household Size | 2.34, see rank | 2.87 | 2.59 |
| 1 Person Households | 30,041, 29.85%, see rank | 23.54% | 25.82% |
| 2 or More Person Households | 70,609, 70.15%, see rank | 76.46% | 74.18% |
| Family Households (Families) | 60,679, 60.29%, see rank | 68.85% | 68.06% |
| Average Family Size | 2.90, see rank | 3.43 | 3.14 |
| Married-Couple Family | 48,709, 48.39%, see rank | 51.09% | 51.66% |
| Nonfamily Households | 39,971, 39.71%, 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.