Portland Historical House Amount of Units in Structure Data
ACS 2010-2014 data
| | Portland | Maine | U.S. |
| Total Housing Units | 33,157, 100% | 724,685 | 132,741,033 |
| 1-unit, Detached | 12,584, 37.95%, see rank | 69.60% | 61.65% |
| 1-unit, Attached | 2,209, 6.66%, see rank | 2.26% | 5.82% |
| 2 Units | 3,200, 9.65%, see rank | 5.22% | 3.75% |
| 3 or 4 Units | 5,106, 15.40%, see rank | 5.53% | 4.43% |
| 5 to 9 Units | 3,308, 9.98%, see rank | 3.80% | 4.78% |
| 10 or More Units | 6,655, 20.07%, see rank | 4.71% | 13.08% |
| Mobile Home, Boat, RV, Van, etc. | 95, 0.29%, see rank | 8.88% | 6.49% |
ACS 2008-2012 data
| | Portland | Maine | U.S. |
| Total Housing Units | 33,945, 100% | 721,171 | 131,642,457 |
| 1-unit, Detached | 13,196, 38.87%, see rank | 69.45% | 61.70% |
| 1-unit, Attached | 2,123, 6.25%, see rank | 2.25% | 5.79% |
| 2 Units | 3,140, 9.25%, see rank | 5.29% | 3.80% |
| 3 or 4 Units | 4,730, 13.93%, see rank | 5.51% | 4.44% |
| 5 to 9 Units | 3,774, 11.12%, see rank | 3.98% | 4.78% |
| 10 or More Units | 6,904, 20.34%, see rank | 4.59% | 12.89% |
| Mobile Home, Boat, RV, Van, etc. | 78, 0.23%, see rank | 8.93% | 6.60% |
ACS 2006-2010 data
| | Portland | Maine | U.S. |
| Total Housing Units | 34,035, 100% | 714,270 | 130,038,080 |
| 1-unit, Detached | 12,977, 38.13%, see rank | 69.40% | 61.62% |
| 1-unit, Attached | 2,044, 6.01%, see rank | 2.19% | 5.74% |
| 2 Units | 3,535, 10.39%, see rank | 5.26% | 3.88% |
| 3 or 4 Units | 5,015, 14.73%, see rank | 5.51% | 4.47% |
| 5 to 9 Units | 3,728, 10.95%, see rank | 4.13% | 4.84% |
| 10 or More Units | 6,618, 19.44%, see rank | 4.50% | 12.68% |
| Mobile Home, Boat, RV, Van, etc. | 118, 0.35%, see rank | 9.01% | 6.76% |
ACS 2005-2009 data
| | Portland | Maine | U.S. |
| Total Housing Units | 32,267, 100% | 696,948 | 127,699,712 |
| 1-unit, Detached | 12,188, 37.77%, see rank | 68.86% | 61.57% |
| 1-unit, Attached | 1,930, 5.98%, see rank | 2.19% | 5.70% |
| 2 Units | 3,128, 9.69%, see rank | 5.35% | 3.94% |
| 3 or 4 Units | 4,933, 15.29%, see rank | 5.67% | 4.51% |
| 5 to 9 Units | 3,732, 11.57%, see rank | 4.28% | 4.87% |
| 10 or More Units | 6,219, 19.27%, see rank | 4.46% | 12.58% |
| Mobile Home, Boat, RV, Van, etc. | 137, 0.42%, see rank | 9.18% | 6.85% |
* 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.
