Seattle, WA Historical Household and Family Data
ACS 2010-2014 data
Total population: 637,850
| Seattle, WA | Washington | U.S. | |
| Total Households | 290,822, 100% | 2,645,396 | 116,211,092 |
| Average Household Size | 2.11, see rank | 2.55 | 2.63 |
| 1 Person Households | 119,386, 41.05%, see rank | 27.79% | 27.57% |
| 2 or More Person Households | 171,436, 58.95%, see rank | 72.21% | 72.43% |
| Family Households (Families) | 129,769, 44.62%, see rank | 64.48% | 66.22% |
| Average Family Size | 3.01, see rank | 3.23 | 3.32 |
| Married-Couple Family | 102,015, 35.08%, see rank | 49.73% | 48.42% |
| Nonfamily Households | 161,053, 55.38%, see rank | 35.52% | 33.78% |
US Census 2010 data
Total population: 608,660
| Seattle, WA | Washington | U.S. | |
| Total Households | 283,510, 100% | 2,620,076 | 116,716,292 |
| Average Household Size | 2.06, see rank | 2.51 | 2.58 |
| 1 Person Households | 117,054, 41.29%, see rank | 27.16% | 26.74% |
| 2 or More Person Households | 166,456, 58.71%, see rank | 72.84% | 73.26% |
| Family Households (Families) | 121,690, 42.92%, see rank | 64.40% | 66.43% |
| Average Family Size | 2.87, see rank | 3.06 | 3.14 |
| Married-Couple Family | 92,522, 32.63%, see rank | 49.19% | 48.42% |
| Nonfamily Households | 161,820, 57.08%, see rank | 35.60% | 33.57% |
ACS 2008-2012 data
Total population: 612,916
| Seattle, WA | Washington | U.S. | |
| Total Households | 285,476, 100% | 2,619,995 | 115,226,802 |
| Average Household Size | 2.06, see rank | 2.52 | 2.61 |
| 1 Person Households | 120,230, 42.12%, see rank | 27.74% | 27.45% |
| 2 or More Person Households | 165,246, 57.88%, see rank | 72.26% | 72.55% |
| Family Households (Families) | 123,994, 43.43%, see rank | 64.49% | 66.47% |
| Average Family Size | 2.97, see rank | 3.18 | 3.29 |
| Married-Couple Family | 97,199, 34.05%, see rank | 49.98% | 48.97% |
| Nonfamily Households | 161,482, 56.57%, see rank | 35.51% | 33.53% |
ACS 2006-2010 data
Total population: 595,240
| Seattle, WA | Washington | U.S. | |
| Total Households | 280,453, 100% | 2,577,375 | 114,235,996 |
| Average Household Size | 2.04, see rank | 2.49 | 2.59 |
| 1 Person Households | 119,161, 42.49%, see rank | 27.74% | 27.24% |
| 2 or More Person Households | 161,292, 57.51%, see rank | 72.26% | 72.76% |
| Family Households (Families) | 122,008, 43.50%, see rank | 64.62% | 66.75% |
| Average Family Size | 2.94, see rank | 3.14 | 3.25 |
| Married-Couple Family | 94,272, 33.61%, see rank | 50.17% | 49.60% |
| Nonfamily Households | 158,445, 56.50%, see rank | 35.38% | 33.25% |
ACS 2005-2009 data
Total population: 594,005
| Seattle, WA | Washington | U.S. | |
| Total Households | 277,014, 100% | 2,512,327 | 112,611,029 |
| Average Household Size | 2.06, see rank | 2.52 | 2.60 |
| 1 Person Households | 118,648, 42.83%, see rank | 27.81% | 27.32% |
| 2 or More Person Households | 158,366, 57.17%, see rank | 72.19% | 72.68% |
| Family Households (Families) | 119,980, 43.31%, see rank | 64.50% | 66.67% |
| Average Family Size | 2.98, see rank | 3.18 | 3.27 |
| Married-Couple Family | 92,452, 33.37%, see rank | 50.27% | 49.71% |
| Nonfamily Households | 157,034, 56.69%, see rank | 35.50% | 33.33% |
US Census 2000 data
Total population: 563,374
| Seattle, WA | Washington | U.S. | |
| Total Households | 258,499, 100% | 2,271,398 | 105,480,101 |
| Average Household Size | 2.08, see rank | 2.53 | 2.59 |
| 1 Person Households | 105,542, 40.83%, see rank | 26.17% | 25.82% |
| 2 or More Person Households | 152,957, 59.17%, see rank | 73.83% | 74.18% |
| Family Households (Families) | 113,400, 43.87%, see rank | 66.00% | 68.06% |
| Average Family Size | 2.87, see rank | 3.07 | 3.14 |
| Married-Couple Family | 84,648, 32.75%, see rank | 52.04% | 51.66% |
| Nonfamily Households | 145,099, 56.13%, see rank | 34.00% | 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.