Washington Historical Household and Family Data
ACS 2010-2014 data
Total population: 6,899,123
| Washington | % | U.S. | |
| Total Households | 2,645,396 | 100% | 116,211,092 |
| Average Household Size | 2.55, see rank | - | 2.63 |
| 1 Person Households | 735,032 | 27.79%, see rank | 27.57% |
| 2 or More Person Households | 1,910,364 | 72.21%, see rank | 72.43% |
| Family Households (Families) | 1,705,647 | 64.48%, see rank | 66.22% |
| Average Family Size | 3.23, see rank | - | 3.32 |
| Married-Couple Family | 1,315,669 | 49.73%, see rank | 48.42% |
| Nonfamily Households | 939,749 | 35.52%, see rank | 33.78% |
US Census 2010 data
Total population: 6,724,540
| Washington | % | U.S. | |
| Total Households | 2,620,076 | 100% | 116,716,292 |
| Average Household Size | 2.51, see rank | - | 2.58 |
| 1 Person Households | 711,619 | 27.16%, see rank | 26.74% |
| 2 or More Person Households | 1,908,457 | 72.84%, see rank | 73.26% |
| Family Households (Families) | 1,687,455 | 64.40%, see rank | 66.43% |
| Average Family Size | 3.06, see rank | - | 3.14 |
| Married-Couple Family | 1,288,849 | 49.19%, see rank | 48.42% |
| Nonfamily Households | 932,621 | 35.60%, see rank | 33.57% |
ACS 2008-2012 data
Total population: 6,738,714
| Washington | % | U.S. | |
| Total Households | 2,619,995 | 100% | 115,226,802 |
| Average Household Size | 2.52, see rank | - | 2.61 |
| 1 Person Households | 726,839 | 27.74%, see rank | 27.45% |
| 2 or More Person Households | 1,893,156 | 72.26%, see rank | 72.55% |
| Family Households (Families) | 1,689,518 | 64.49%, see rank | 66.47% |
| Average Family Size | 3.18, see rank | - | 3.29 |
| Married-Couple Family | 1,309,534 | 49.98%, see rank | 48.97% |
| Nonfamily Households | 930,477 | 35.51%, see rank | 33.53% |
ACS 2006-2010 data
Total population: 6,561,297
| Washington | % | U.S. | |
| Total Households | 2,577,375 | 100% | 114,235,996 |
| Average Household Size | 2.49, see rank | - | 2.59 |
| 1 Person Households | 714,844 | 27.74%, see rank | 27.24% |
| 2 or More Person Households | 1,862,531 | 72.26%, see rank | 72.76% |
| Family Households (Families) | 1,665,378 | 64.62%, see rank | 66.75% |
| Average Family Size | 3.14, see rank | - | 3.25 |
| Married-Couple Family | 1,293,097 | 50.17%, see rank | 49.60% |
| Nonfamily Households | 911,997 | 35.38%, see rank | 33.25% |
ACS 2005-2009 data
Total population: 6,465,755
| Washington | % | U.S. | |
| Total Households | 2,512,327 | 100% | 112,611,029 |
| Average Household Size | 2.52, see rank | - | 2.60 |
| 1 Person Households | 698,558 | 27.81%, see rank | 27.32% |
| 2 or More Person Households | 1,813,769 | 72.19%, see rank | 72.68% |
| Family Households (Families) | 1,620,376 | 64.50%, see rank | 66.67% |
| Average Family Size | 3.18, see rank | - | 3.27 |
| Married-Couple Family | 1,262,848 | 50.27%, see rank | 49.71% |
| Nonfamily Households | 891,951 | 35.50%, see rank | 33.33% |
US Census 2000 data
Total population: 5,894,121
| Washington | % | U.S. | |
| Total Households | 2,271,398 | 100% | 105,480,101 |
| Average Household Size | 2.53, see rank | - | 2.59 |
| 1 Person Households | 594,325 | 26.17%, see rank | 25.82% |
| 2 or More Person Households | 1,677,073 | 73.83%, see rank | 74.18% |
| Family Households (Families) | 1,499,127 | 66.00%, see rank | 68.06% |
| Average Family Size | 3.07, see rank | - | 3.14 |
| Married-Couple Family | 1,181,995 | 52.04%, see rank | 51.66% |
| Nonfamily Households | 772,271 | 34.00%, see rank | 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.