Multnomah County Historical Household and Family Data
ACS 2010-2014 data
Total population: 757,371
| Multnomah County | Oregon | U.S. | |
| Total Households | 308,595, 100% | 1,522,988 | 116,211,092 |
| Average Household Size | 2.40, see rank | 2.50 | 2.63 |
| 1 Person Households | 101,355, 32.84%, see rank | 27.93% | 27.57% |
| 2 or More Person Households | 207,240, 67.16%, see rank | 72.07% | 72.43% |
| Family Households (Families) | 167,988, 54.44%, see rank | 63.44% | 66.22% |
| Average Family Size | 3.21, see rank | 3.17 | 3.32 |
| Married-Couple Family | 121,641, 39.42%, see rank | 48.31% | 48.42% |
| Nonfamily Households | 140,607, 45.56%, see rank | 36.56% | 33.78% |
US Census 2010 data
Total population: 735,334
| Multnomah County | Oregon | U.S. | |
| Total Households | 304,540, 100% | 1,518,938 | 116,716,292 |
| Average Household Size | 2.35, see rank | 2.47 | 2.58 |
| 1 Person Households | 99,408, 32.64%, see rank | 27.44% | 26.74% |
| 2 or More Person Households | 205,132, 67.36%, see rank | 72.56% | 73.26% |
| Family Households (Families) | 163,539, 53.70%, see rank | 63.43% | 66.43% |
| Average Family Size | 3.03, see rank | 3.00 | 3.14 |
| Married-Couple Family | 117,624, 38.62%, see rank | 48.31% | 48.42% |
| Nonfamily Households | 141,001, 46.30%, see rank | 36.57% | 33.57% |
ACS 2008-2012 data
Total population: 737,110
| Multnomah County | Oregon | U.S. | |
| Total Households | 303,654, 100% | 1,512,718 | 115,226,802 |
| Average Household Size | 2.37, see rank | 2.48 | 2.61 |
| 1 Person Households | 101,623, 33.47%, see rank | 27.87% | 27.45% |
| 2 or More Person Households | 202,031, 66.53%, see rank | 72.13% | 72.55% |
| Family Households (Families) | 164,793, 54.27%, see rank | 63.74% | 66.47% |
| Average Family Size | 3.20, see rank | 3.13 | 3.29 |
| Married-Couple Family | 119,992, 39.52%, see rank | 49.03% | 48.97% |
| Nonfamily Households | 138,861, 45.73%, see rank | 36.26% | 33.53% |
ACS 2006-2010 data
Total population: 712,036
| Multnomah County | Oregon | U.S. | |
| Total Households | 298,398, 100% | 1,499,267 | 114,235,996 |
| Average Household Size | 2.33, see rank | 2.45 | 2.59 |
| 1 Person Households | 101,002, 33.85%, see rank | 27.87% | 27.24% |
| 2 or More Person Households | 197,396, 66.15%, see rank | 72.13% | 72.76% |
| Family Households (Families) | 162,105, 54.33%, see rank | 63.84% | 66.75% |
| Average Family Size | 3.14, see rank | 3.10 | 3.25 |
| Married-Couple Family | 117,648, 39.43%, see rank | 49.59% | 49.60% |
| Nonfamily Households | 136,293, 45.67%, see rank | 36.16% | 33.25% |
ACS 2005-2009 data
Total population: 698,599
| Multnomah County | Oregon | U.S. | |
| Total Households | 290,080, 100% | 1,464,196 | 112,611,029 |
| Average Household Size | 2.35, see rank | 2.49 | 2.60 |
| 1 Person Households | 98,881, 34.09%, see rank | 27.88% | 27.32% |
| 2 or More Person Households | 191,199, 65.91%, see rank | 72.12% | 72.68% |
| Family Households (Families) | 158,515, 54.65%, see rank | 63.92% | 66.67% |
| Average Family Size | 3.17, see rank | 3.15 | 3.27 |
| Married-Couple Family | 116,223, 40.07%, see rank | 49.96% | 49.71% |
| Nonfamily Households | 131,565, 45.35%, see rank | 36.08% | 33.33% |
US Census 2000 data
Total population: 660,486
| Multnomah County | Oregon | U.S. | |
| Total Households | 272,098, 100% | 1,333,723 | 105,480,101 |
| Average Household Size | 2.37, see rank | 2.51 | 2.59 |
| 1 Person Households | 88,334, 32.46%, see rank | 26.06% | 25.82% |
| 2 or More Person Households | 183,764, 67.54%, see rank | 73.94% | 74.18% |
| Family Households (Families) | 152,232, 55.95%, see rank | 65.81% | 68.06% |
| Average Family Size | 3.03, see rank | 3.02 | 3.14 |
| Married-Couple Family | 111,400, 40.94%, see rank | 51.92% | 51.66% |
| Nonfamily Households | 119,866, 44.05%, see rank | 34.19% | 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.