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Black Diamond, WA Historical Household and Family Data
ACS 2010-2014 data
Total population: 4,257
| Black Diamond, WA | Washington | U.S. | |
| Total Households | 1,658, 100% | 2,645,396 | 116,211,092 |
| Average Household Size | 2.57, see rank | 2.55 | 2.63 |
| 1 Person Households | 379, 22.86%, see rank | 27.79% | 27.57% |
| 2 or More Person Households | 1,279, 77.14%, see rank | 72.21% | 72.43% |
| Family Households (Families) | 1,195, 72.07%, see rank | 64.48% | 66.22% |
| Average Family Size | 3.09, see rank | 3.23 | 3.32 |
| Married-Couple Family | 1,048, 63.21%, see rank | 49.73% | 48.42% |
| Nonfamily Households | 463, 27.93%, see rank | 35.52% | 33.78% |
US Census 2010 data
Total population: 4,151
| Black Diamond, WA | Washington | U.S. | |
| Total Households | 1,546, 100% | 2,620,076 | 116,716,292 |
| Average Household Size | 2.68, see rank | 2.51 | 2.58 |
| 1 Person Households | 276, 17.85%, see rank | 27.16% | 26.74% |
| 2 or More Person Households | 1,270, 82.15%, see rank | 72.84% | 73.26% |
| Family Households (Families) | 1,157, 74.84%, see rank | 64.40% | 66.43% |
| Average Family Size | 3.05, see rank | 3.06 | 3.14 |
| Married-Couple Family | 958, 61.97%, see rank | 49.19% | 48.42% |
| Nonfamily Households | 389, 25.16%, see rank | 35.60% | 33.57% |
ACS 2008-2012 data
Total population: 4,170
| Black Diamond, WA | Washington | U.S. | |
| Total Households | 1,578, 100% | 2,619,995 | 115,226,802 |
| Average Household Size | 2.64, see rank | 2.52 | 2.61 |
| 1 Person Households | 330, 20.91%, see rank | 27.74% | 27.45% |
| 2 or More Person Households | 1,248, 79.09%, see rank | 72.26% | 72.55% |
| Family Households (Families) | 1,191, 75.48%, see rank | 64.49% | 66.47% |
| Average Family Size | 3.12, see rank | 3.18 | 3.29 |
| Married-Couple Family | 1,083, 68.63%, see rank | 49.98% | 48.97% |
| Nonfamily Households | 387, 24.52%, see rank | 35.51% | 33.53% |
ACS 2006-2010 data
Total population: 4,073
| Black Diamond, WA | Washington | U.S. | |
| Total Households | 1,475, 100% | 2,577,375 | 114,235,996 |
| Average Household Size | 2.76, see rank | 2.49 | 2.59 |
| 1 Person Households | 302, 20.47%, see rank | 27.74% | 27.24% |
| 2 or More Person Households | 1,173, 79.53%, see rank | 72.26% | 72.76% |
| Family Households (Families) | 1,088, 73.76%, see rank | 64.62% | 66.75% |
| Average Family Size | 3.30, see rank | 3.14 | 3.25 |
| Married-Couple Family | 978, 66.31%, see rank | 50.17% | 49.60% |
| Nonfamily Households | 387, 26.24%, see rank | 35.38% | 33.25% |
ACS 2005-2009 data
Total population: 4,014
| Black Diamond, WA | Washington | U.S. | |
| Total Households | 1,382, 100% | 2,512,327 | 112,611,029 |
| Average Household Size | 2.90, see rank | 2.52 | 2.60 |
| 1 Person Households | 264, 19.10%, see rank | 27.81% | 27.32% |
| 2 or More Person Households | 1,118, 80.90%, see rank | 72.19% | 72.68% |
| Family Households (Families) | 1,022, 73.95%, see rank | 64.50% | 66.67% |
| Average Family Size | 3.47, see rank | 3.18 | 3.27 |
| Married-Couple Family | 906, 65.56%, see rank | 50.27% | 49.71% |
| Nonfamily Households | 360, 26.05%, see rank | 35.50% | 33.33% |
US Census 2000 data
Total population: 3,970
| Black Diamond, WA | Washington | U.S. | |
| Total Households | 1,456, 100% | 2,271,398 | 105,480,101 |
| Average Household Size | 2.73, see rank | 2.53 | 2.59 |
| 1 Person Households | 250, 17.17%, see rank | 26.17% | 25.82% |
| 2 or More Person Households | 1,206, 82.83%, see rank | 73.83% | 74.18% |
| Family Households (Families) | 1,132, 77.75%, see rank | 66.00% | 68.06% |
| Average Family Size | 3.08, see rank | 3.07 | 3.14 |
| Married-Couple Family | 949, 65.18%, see rank | 52.04% | 51.66% |
| Nonfamily Households | 324, 22.25%, 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.