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Washington County Historical Household and Family Data
ACS 2010-2014 data
Total population: 148,913
| Washington County | Maryland | U.S. | |
| Total Households | 55,769, 100% | 2,155,983 | 116,211,092 |
| Average Household Size | 2.52, see rank | 2.67 | 2.63 |
| 1 Person Households | 15,061, 27.01%, see rank | 26.95% | 27.57% |
| 2 or More Person Households | 40,708, 72.99%, see rank | 73.05% | 72.43% |
| Family Households (Families) | 37,611, 67.44%, see rank | 67.07% | 66.22% |
| Average Family Size | 3.15, see rank | 3.35 | 3.32 |
| Married-Couple Family | 27,961, 50.14%, see rank | 47.68% | 48.42% |
| Nonfamily Households | 18,158, 32.56%, see rank | 32.93% | 33.78% |
US Census 2010 data
Total population: 147,430
| Washington County | Maryland | U.S. | |
| Total Households | 55,687, 100% | 2,156,411 | 116,716,292 |
| Average Household Size | 2.50, see rank | 2.61 | 2.58 |
| 1 Person Households | 14,831, 26.63%, see rank | 26.11% | 26.74% |
| 2 or More Person Households | 40,856, 73.37%, see rank | 73.89% | 73.26% |
| Family Households (Families) | 37,506, 67.35%, see rank | 67.10% | 66.43% |
| Average Family Size | 3.01, see rank | 3.15 | 3.14 |
| Married-Couple Family | 28,186, 50.62%, see rank | 47.61% | 48.42% |
| Nonfamily Households | 18,181, 32.65%, see rank | 32.90% | 33.57% |
ACS 2008-2012 data
Total population: 147,882
| Washington County | Maryland | U.S. | |
| Total Households | 55,798, 100% | 2,138,806 | 115,226,802 |
| Average Household Size | 2.52, see rank | 2.64 | 2.61 |
| 1 Person Households | 14,720, 26.38%, see rank | 27.12% | 27.45% |
| 2 or More Person Households | 41,078, 73.62%, see rank | 72.88% | 72.55% |
| Family Households (Families) | 37,927, 67.97%, see rank | 66.97% | 66.47% |
| Average Family Size | 3.12, see rank | 3.32 | 3.29 |
| Married-Couple Family | 28,536, 51.14%, see rank | 48.03% | 48.97% |
| Nonfamily Households | 17,871, 32.03%, see rank | 33.03% | 33.53% |
ACS 2006-2010 data
Total population: 146,329
| Washington County | Maryland | U.S. | |
| Total Households | 55,419, 100% | 2,121,047 | 114,235,996 |
| Average Household Size | 2.52, see rank | 2.62 | 2.59 |
| 1 Person Households | 14,815, 26.73%, see rank | 26.92% | 27.24% |
| 2 or More Person Households | 40,604, 73.27%, see rank | 73.08% | 72.76% |
| Family Households (Families) | 37,817, 68.24%, see rank | 67.11% | 66.75% |
| Average Family Size | 3.12, see rank | 3.28 | 3.25 |
| Married-Couple Family | 28,973, 52.28%, see rank | 48.59% | 49.60% |
| Nonfamily Households | 17,602, 31.76%, see rank | 32.89% | 33.25% |
ACS 2005-2009 data
Total population: 144,158
| Washington County | Maryland | U.S. | |
| Total Households | 55,524, 100% | 2,092,538 | 112,611,029 |
| Average Household Size | 2.47, see rank | 2.63 | 2.60 |
| 1 Person Households | 14,850, 26.75%, see rank | 27.08% | 27.32% |
| 2 or More Person Households | 40,674, 73.25%, see rank | 72.92% | 72.68% |
| Family Households (Families) | 37,401, 67.36%, see rank | 66.92% | 66.67% |
| Average Family Size | 3.07, see rank | 3.30 | 3.27 |
| Married-Couple Family | 28,471, 51.28%, see rank | 48.74% | 49.71% |
| Nonfamily Households | 18,123, 32.64%, see rank | 33.08% | 33.33% |
US Census 2000 data
Total population: 131,923
| Washington County | Maryland | U.S. | |
| Total Households | 49,726, 100% | 1,980,859 | 105,480,101 |
| Average Household Size | 2.46, see rank | 2.61 | 2.59 |
| 1 Person Households | 12,941, 26.02%, see rank | 25.01% | 25.82% |
| 2 or More Person Households | 36,785, 73.98%, see rank | 74.99% | 74.18% |
| Family Households (Families) | 34,092, 68.56%, see rank | 68.62% | 68.06% |
| Average Family Size | 2.96, see rank | 3.13 | 3.14 |
| Married-Couple Family | 26,828, 53.95%, see rank | 50.21% | 51.66% |
| Nonfamily Households | 15,634, 31.44%, see rank | 31.38% | 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.