Cowlitz County Historical Household and Family Data
ACS 2010-2014 data
Total population: 102,072
| Cowlitz County | Washington | U.S. | |
| Total Households | 39,765, 100% | 2,645,396 | 116,211,092 |
| Average Household Size | 2.54, see rank | 2.55 | 2.63 |
| 1 Person Households | 10,945, 27.52%, see rank | 27.79% | 27.57% |
| 2 or More Person Households | 28,820, 72.48%, see rank | 72.21% | 72.43% |
| Family Households (Families) | 26,282, 66.09%, see rank | 64.48% | 66.22% |
| Average Family Size | 3.20, see rank | 3.23 | 3.32 |
| Married-Couple Family | 19,842, 49.90%, see rank | 49.73% | 48.42% |
| Nonfamily Households | 13,483, 33.91%, see rank | 35.52% | 33.78% |
US Census 2010 data
Total population: 102,410
| Cowlitz County | Washington | U.S. | |
| Total Households | 40,244, 100% | 2,620,076 | 116,716,292 |
| Average Household Size | 2.51, see rank | 2.51 | 2.58 |
| 1 Person Households | 10,399, 25.84%, see rank | 27.16% | 26.74% |
| 2 or More Person Households | 29,845, 74.16%, see rank | 72.84% | 73.26% |
| Family Households (Families) | 27,241, 67.69%, see rank | 64.40% | 66.43% |
| Average Family Size | 2.99, see rank | 3.06 | 3.14 |
| Married-Couple Family | 20,196, 50.18%, see rank | 49.19% | 48.42% |
| Nonfamily Households | 13,003, 32.31%, see rank | 35.60% | 33.57% |
ACS 2008-2012 data
Total population: 102,138
| Cowlitz County | Washington | U.S. | |
| Total Households | 39,683, 100% | 2,619,995 | 115,226,802 |
| Average Household Size | 2.54, see rank | 2.52 | 2.61 |
| 1 Person Households | 10,427, 26.28%, see rank | 27.74% | 27.45% |
| 2 or More Person Households | 29,256, 73.72%, see rank | 72.26% | 72.55% |
| Family Households (Families) | 26,571, 66.96%, see rank | 64.49% | 66.47% |
| Average Family Size | 3.16, see rank | 3.18 | 3.29 |
| Married-Couple Family | 19,871, 50.07%, see rank | 49.98% | 48.97% |
| Nonfamily Households | 13,112, 33.04%, see rank | 35.51% | 33.53% |
ACS 2006-2010 data
Total population: 101,244
| Cowlitz County | Washington | U.S. | |
| Total Households | 39,441, 100% | 2,577,375 | 114,235,996 |
| Average Household Size | 2.50, see rank | 2.49 | 2.59 |
| 1 Person Households | 9,997, 25.35%, see rank | 27.74% | 27.24% |
| 2 or More Person Households | 29,444, 74.65%, see rank | 72.26% | 72.76% |
| Family Households (Families) | 26,969, 68.38%, see rank | 64.62% | 66.75% |
| Average Family Size | 3.08, see rank | 3.14 | 3.25 |
| Married-Couple Family | 20,559, 52.13%, see rank | 50.17% | 49.60% |
| Nonfamily Households | 12,472, 31.62%, see rank | 35.38% | 33.25% |
ACS 2005-2009 data
Total population: 99,874
| Cowlitz County | Washington | U.S. | |
| Total Households | 38,497, 100% | 2,512,327 | 112,611,029 |
| Average Household Size | 2.53, see rank | 2.52 | 2.60 |
| 1 Person Households | 9,731, 25.28%, see rank | 27.81% | 27.32% |
| 2 or More Person Households | 28,766, 74.72%, see rank | 72.19% | 72.68% |
| Family Households (Families) | 26,277, 68.26%, see rank | 64.50% | 66.67% |
| Average Family Size | 3.11, see rank | 3.18 | 3.27 |
| Married-Couple Family | 19,850, 51.56%, see rank | 50.27% | 49.71% |
| Nonfamily Households | 12,220, 31.74%, see rank | 35.50% | 33.33% |
US Census 2000 data
Total population: 92,948
| Cowlitz County | Washington | U.S. | |
| Total Households | 35,850, 100% | 2,271,398 | 105,480,101 |
| Average Household Size | 2.55, see rank | 2.53 | 2.59 |
| 1 Person Households | 8,728, 24.35%, see rank | 26.17% | 25.82% |
| 2 or More Person Households | 27,122, 75.65%, see rank | 73.83% | 74.18% |
| Family Households (Families) | 25,056, 69.89%, see rank | 66.00% | 68.06% |
| Average Family Size | 3.01, see rank | 3.07 | 3.14 |
| Married-Couple Family | 19,563, 54.57%, see rank | 52.04% | 51.66% |
| Nonfamily Households | 10,794, 30.11%, 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.