Washtenaw County Historical Household and Family Data
ACS 2010-2014 data
Total population: 351,454
| Washtenaw County | Michigan | U.S. | |
| Total Households | 136,471, 100% | 3,827,880 | 116,211,092 |
| Average Household Size | 2.44, see rank | 2.52 | 2.63 |
| 1 Person Households | 43,044, 31.54%, see rank | 28.90% | 27.57% |
| 2 or More Person Households | 93,427, 68.46%, see rank | 71.10% | 72.43% |
| Family Households (Families) | 78,243, 57.33%, see rank | 65.34% | 66.22% |
| Average Family Size | 3.16, see rank | 3.20 | 3.32 |
| Married-Couple Family | 60,799, 44.55%, see rank | 48.00% | 48.42% |
| Nonfamily Households | 58,228, 42.67%, see rank | 34.66% | 33.78% |
US Census 2010 data
Total population: 344,791
| Washtenaw County | Michigan | U.S. | |
| Total Households | 137,193, 100% | 3,872,508 | 116,716,292 |
| Average Household Size | 2.38, see rank | 2.49 | 2.58 |
| 1 Person Households | 42,036, 30.64%, see rank | 27.88% | 26.74% |
| 2 or More Person Households | 95,157, 69.36%, see rank | 72.12% | 73.26% |
| Family Households (Families) | 78,897, 57.51%, see rank | 65.95% | 66.43% |
| Average Family Size | 3.02, see rank | 3.05 | 3.14 |
| Married-Couple Family | 60,777, 44.30%, see rank | 47.96% | 48.42% |
| Nonfamily Households | 58,296, 42.49%, see rank | 34.05% | 33.57% |
ACS 2008-2012 data
Total population: 346,010
| Washtenaw County | Michigan | U.S. | |
| Total Households | 134,883, 100% | 3,818,931 | 115,226,802 |
| Average Household Size | 2.41, see rank | 2.53 | 2.61 |
| 1 Person Households | 41,891, 31.06%, see rank | 28.58% | 27.45% |
| 2 or More Person Households | 92,992, 68.94%, see rank | 71.42% | 72.55% |
| Family Households (Families) | 78,474, 58.18%, see rank | 65.96% | 66.47% |
| Average Family Size | 3.10, see rank | 3.20 | 3.29 |
| Married-Couple Family | 61,286, 45.44%, see rank | 48.96% | 48.97% |
| Nonfamily Households | 56,409, 41.82%, see rank | 34.04% | 33.53% |
ACS 2006-2010 data
Total population: 343,947
| Washtenaw County | Michigan | U.S. | |
| Total Households | 134,161, 100% | 3,843,997 | 114,235,996 |
| Average Household Size | 2.38, see rank | 2.53 | 2.59 |
| 1 Person Households | 40,736, 30.36%, see rank | 28.19% | 27.24% |
| 2 or More Person Households | 93,425, 69.64%, see rank | 71.81% | 72.76% |
| Family Households (Families) | 79,138, 58.99%, see rank | 66.44% | 66.75% |
| Average Family Size | 3.06, see rank | 3.19 | 3.25 |
| Married-Couple Family | 61,848, 46.10%, see rank | 49.75% | 49.60% |
| Nonfamily Households | 55,023, 41.01%, see rank | 33.56% | 33.25% |
ACS 2005-2009 data
Total population: 346,007
| Washtenaw County | Michigan | U.S. | |
| Total Households | 133,925, 100% | 3,860,160 | 112,611,029 |
| Average Household Size | 2.40, see rank | 2.53 | 2.60 |
| 1 Person Households | 39,082, 29.18%, see rank | 27.94% | 27.32% |
| 2 or More Person Households | 94,843, 70.82%, see rank | 72.06% | 72.68% |
| Family Households (Families) | 79,457, 59.33%, see rank | 66.58% | 66.67% |
| Average Family Size | 3.05, see rank | 3.19 | 3.27 |
| Married-Couple Family | 62,466, 46.64%, see rank | 50.04% | 49.71% |
| Nonfamily Households | 54,468, 40.67%, see rank | 33.42% | 33.33% |
US Census 2000 data
Total population: 322,895
| Washtenaw County | Michigan | U.S. | |
| Total Households | 125,327, 100% | 3,785,661 | 105,480,101 |
| Average Household Size | 2.41, see rank | 2.56 | 2.59 |
| 1 Person Households | 37,025, 29.54%, see rank | 26.25% | 25.82% |
| 2 or More Person Households | 88,302, 70.46%, see rank | 73.75% | 74.18% |
| Family Households (Families) | 73,690, 58.80%, see rank | 68.04% | 68.06% |
| Average Family Size | 3.02, see rank | 3.10 | 3.14 |
| Married-Couple Family | 58,211, 46.45%, see rank | 51.45% | 51.66% |
| Nonfamily Households | 51,637, 41.20%, see rank | 31.96% | 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.