Clark County Historical Household and Family Data
ACS 2010-2014 data
Total population: 438,272
| Clark County | Washington | U.S. | |
| Total Households | 160,492, 100% | 2,645,396 | 116,211,092 |
| Average Household Size | 2.71, see rank | 2.55 | 2.63 |
| 1 Person Households | 38,688, 24.11%, see rank | 27.79% | 27.57% |
| 2 or More Person Households | 121,804, 75.89%, see rank | 72.21% | 72.43% |
| Family Households (Families) | 111,328, 69.37%, see rank | 64.48% | 66.22% |
| Average Family Size | 3.33, see rank | 3.23 | 3.32 |
| Married-Couple Family | 85,890, 53.52%, see rank | 49.73% | 48.42% |
| Nonfamily Households | 49,164, 30.63%, see rank | 35.52% | 33.78% |
US Census 2010 data
Total population: 425,363
| Clark County | Washington | U.S. | |
| Total Households | 158,099, 100% | 2,620,076 | 116,716,292 |
| Average Household Size | 2.67, see rank | 2.51 | 2.58 |
| 1 Person Households | 36,526, 23.10%, see rank | 27.16% | 26.74% |
| 2 or More Person Households | 121,573, 76.90%, see rank | 72.84% | 73.26% |
| Family Households (Families) | 110,672, 70.00%, see rank | 64.40% | 66.43% |
| Average Family Size | 3.15, see rank | 3.06 | 3.14 |
| Married-Couple Family | 84,752, 53.61%, see rank | 49.19% | 48.42% |
| Nonfamily Households | 47,427, 30.00%, see rank | 35.60% | 33.57% |
ACS 2008-2012 data
Total population: 426,984
| Clark County | Washington | U.S. | |
| Total Households | 158,365, 100% | 2,619,995 | 115,226,802 |
| Average Household Size | 2.67, see rank | 2.52 | 2.61 |
| 1 Person Households | 38,024, 24.01%, see rank | 27.74% | 27.45% |
| 2 or More Person Households | 120,341, 75.99%, see rank | 72.26% | 72.55% |
| Family Households (Families) | 109,834, 69.35%, see rank | 64.49% | 66.47% |
| Average Family Size | 3.29, see rank | 3.18 | 3.29 |
| Married-Couple Family | 85,248, 53.83%, see rank | 49.98% | 48.97% |
| Nonfamily Households | 48,531, 30.65%, see rank | 35.51% | 33.53% |
ACS 2006-2010 data
Total population: 414,816
| Clark County | Washington | U.S. | |
| Total Households | 155,042, 100% | 2,577,375 | 114,235,996 |
| Average Household Size | 2.65, see rank | 2.49 | 2.59 |
| 1 Person Households | 36,891, 23.79%, see rank | 27.74% | 27.24% |
| 2 or More Person Households | 118,151, 76.21%, see rank | 72.26% | 72.76% |
| Family Households (Families) | 108,421, 69.93%, see rank | 64.62% | 66.75% |
| Average Family Size | 3.24, see rank | 3.14 | 3.25 |
| Married-Couple Family | 84,292, 54.37%, see rank | 50.17% | 49.60% |
| Nonfamily Households | 46,621, 30.07%, see rank | 35.38% | 33.25% |
ACS 2005-2009 data
Total population: 416,205
| Clark County | Washington | U.S. | |
| Total Households | 151,312, 100% | 2,512,327 | 112,611,029 |
| Average Household Size | 2.72, see rank | 2.52 | 2.60 |
| 1 Person Households | 35,958, 23.76%, see rank | 27.81% | 27.32% |
| 2 or More Person Households | 115,354, 76.24%, see rank | 72.19% | 72.68% |
| Family Households (Families) | 105,948, 70.02%, see rank | 64.50% | 66.67% |
| Average Family Size | 3.32, see rank | 3.18 | 3.27 |
| Married-Couple Family | 82,445, 54.49%, see rank | 50.27% | 49.71% |
| Nonfamily Households | 45,364, 29.98%, see rank | 35.50% | 33.33% |
US Census 2000 data
Total population: 345,238
| Clark County | Washington | U.S. | |
| Total Households | 127,208, 100% | 2,271,398 | 105,480,101 |
| Average Household Size | 2.69, see rank | 2.53 | 2.59 |
| 1 Person Households | 27,769, 21.83%, see rank | 26.17% | 25.82% |
| 2 or More Person Households | 99,439, 78.17%, see rank | 73.83% | 74.18% |
| Family Households (Families) | 90,958, 71.50%, see rank | 66.00% | 68.06% |
| Average Family Size | 3.15, see rank | 3.07 | 3.14 |
| Married-Couple Family | 72,256, 56.80%, see rank | 52.04% | 51.66% |
| Nonfamily Households | 36,250, 28.50%, 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.