Portland Historical Household and Family Data
ACS 2010-2014 data
Total population: 66,317
| Portland | Maine | U.S. | |
| Total Households | 30,107, 100% | 553,086 | 116,211,092 |
| Average Household Size | 2.14, see rank | 2.34 | 2.63 |
| 1 Person Households | 11,766, 39.08%, see rank | 29.06% | 27.57% |
| 2 or More Person Households | 18,341, 60.92%, see rank | 70.94% | 72.43% |
| Family Households (Families) | 13,546, 44.99%, see rank | 62.91% | 66.22% |
| Average Family Size | 3.01, see rank | 2.96 | 3.32 |
| Married-Couple Family | 9,384, 31.17%, see rank | 48.92% | 48.42% |
| Nonfamily Households | 16,561, 55.01%, see rank | 37.09% | 33.78% |
US Census 2010 data
Total population: 66,194
| Portland | Maine | U.S. | |
| Total Households | 30,725, 100% | 557,219 | 116,716,292 |
| Average Household Size | 2.07, see rank | 2.32 | 2.58 |
| 1 Person Households | 12,443, 40.50%, see rank | 28.63% | 26.74% |
| 2 or More Person Households | 18,282, 59.50%, see rank | 71.37% | 73.26% |
| Family Households (Families) | 13,324, 43.37%, see rank | 62.92% | 66.43% |
| Average Family Size | 2.88, see rank | 2.83 | 3.14 |
| Married-Couple Family | 9,129, 29.71%, see rank | 48.47% | 48.42% |
| Nonfamily Households | 17,401, 56.63%, see rank | 37.08% | 33.57% |
ACS 2008-2012 data
Total population: 66,235
| Portland | Maine | U.S. | |
| Total Households | 30,840, 100% | 553,208 | 115,226,802 |
| Average Household Size | 2.08, see rank | 2.34 | 2.61 |
| 1 Person Households | 12,508, 40.56%, see rank | 28.94% | 27.45% |
| 2 or More Person Households | 18,332, 59.44%, see rank | 71.06% | 72.55% |
| Family Households (Families) | 13,778, 44.68%, see rank | 63.24% | 66.47% |
| Average Family Size | 2.97, see rank | 2.96 | 3.29 |
| Married-Couple Family | 9,762, 31.65%, see rank | 49.51% | 48.97% |
| Nonfamily Households | 17,062, 55.32%, see rank | 36.76% | 33.53% |
ACS 2006-2010 data
Total population: 66,138
| Portland | Maine | U.S. | |
| Total Households | 30,686, 100% | 551,125 | 114,235,996 |
| Average Household Size | 2.07, see rank | 2.34 | 2.59 |
| 1 Person Households | 12,509, 40.76%, see rank | 28.19% | 27.24% |
| 2 or More Person Households | 18,177, 59.24%, see rank | 71.81% | 72.76% |
| Family Households (Families) | 13,783, 44.92%, see rank | 64.26% | 66.75% |
| Average Family Size | 2.97, see rank | 2.94 | 3.25 |
| Married-Couple Family | 9,740, 31.74%, see rank | 50.52% | 49.60% |
| Nonfamily Households | 16,903, 55.08%, see rank | 35.74% | 33.25% |
ACS 2005-2009 data
Total population: 63,153
| Portland | Maine | U.S. | |
| Total Households | 28,990, 100% | 542,617 | 112,611,029 |
| Average Household Size | 2.08, see rank | 2.36 | 2.60 |
| 1 Person Households | 11,589, 39.98%, see rank | 27.98% | 27.32% |
| 2 or More Person Households | 17,401, 60.02%, see rank | 72.02% | 72.68% |
| Family Households (Families) | 13,189, 45.49%, see rank | 64.66% | 66.67% |
| Average Family Size | 2.95, see rank | 2.95 | 3.27 |
| Married-Couple Family | 9,140, 31.53%, see rank | 50.82% | 49.71% |
| Nonfamily Households | 15,801, 54.51%, see rank | 35.34% | 33.33% |
* 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.