Portland Historical Amount of Rooms in a House Data
ACS 2010-2014 data
| | Portland | Maine | U.S. |
| Total Housing Units | 33,157, 100% | 724,685 | 132,741,033 |
| 1 Room | 1,543, 4.65%, see rank | 2.56% | 1.95% |
| 2 Rooms | 1,981, 5.97%, see rank | 3.57% | 2.48% |
| 3 Rooms | 4,621, 13.94%, see rank | 9.58% | 9.13% |
| 4 Rooms | 5,802, 17.50%, see rank | 17.70% | 16.60% |
| 5 Rooms | 6,310, 19.03%, see rank | 20.22% | 20.41% |
| 6 Rooms | 5,033, 15.18%, see rank | 17.50% | 18.06% |
| 7 Rooms | 3,261, 9.84%, see rank | 11.95% | 12.27% |
| 8 Rooms | 2,061, 6.22%, see rank | 7.74% | 8.48% |
| 9 Rooms or More | 2,545, 7.68%, see rank | 9.17% | 10.60% |
| Median Rooms | 4.90, see rank | 5.30 | 5.50 |
ACS 2008-2012 data
| | Portland | Maine | U.S. |
| Total Housing Units | 33,945, 100% | 721,171 | 131,642,457 |
| 1 Room | 1,410, 4.15%, see rank | 2.44% | 1.95% |
| 2 Rooms | 2,195, 6.47%, see rank | 3.37% | 2.36% |
| 3 Rooms | 4,914, 14.48%, see rank | 9.42% | 8.97% |
| 4 Rooms | 6,005, 17.69%, see rank | 17.67% | 16.57% |
| 5 Rooms | 6,409, 18.88%, see rank | 20.35% | 20.41% |
| 6 Rooms | 5,259, 15.49%, see rank | 17.62% | 18.25% |
| 7 Rooms | 3,283, 9.67%, see rank | 12.14% | 12.38% |
| 8 Rooms | 2,076, 6.12%, see rank | 7.89% | 8.59% |
| 9 Rooms or More | 2,394, 7.05%, see rank | 9.09% | 10.52% |
| Median Rooms | 4.90, see rank | 5.30 | 5.50 |
ACS 2006-2010 data
| | Portland | Maine | U.S. |
| Total Housing Units | 34,035, 100% | 714,270 | 130,038,080 |
| 1 Room | 1,107, 3.25%, see rank | 2.08% | 1.59% |
| 2 Rooms | 2,457, 7.22%, see rank | 3.58% | 2.62% |
| 3 Rooms | 5,130, 15.07%, see rank | 9.57% | 9.02% |
| 4 Rooms | 6,177, 18.15%, see rank | 18.04% | 16.85% |
| 5 Rooms | 6,200, 18.22%, see rank | 20.72% | 20.93% |
| 6 Rooms | 5,271, 15.49%, see rank | 17.76% | 18.56% |
| 7 Rooms | 3,572, 10.50%, see rank | 12.24% | 12.38% |
| 8 Rooms | 1,792, 5.27%, see rank | 7.66% | 8.39% |
| 9 Rooms or More | 2,329, 6.84%, see rank | 8.35% | 9.65% |
| Median Rooms | 4.80, see rank | 5.30 | 5.50 |
ACS 2005-2009 data
| | Portland | Maine | U.S. |
| Total Housing Units | 32,267, 100% | 696,948 | 127,699,712 |
| 1 Room | 1,011, 3.13%, see rank | 1.84% | 1.39% |
| 2 Rooms | 2,504, 7.76%, see rank | 3.78% | 2.78% |
| 3 Rooms | 4,938, 15.30%, see rank | 9.55% | 9.07% |
| 4 Rooms | 6,132, 19.00%, see rank | 18.38% | 17.03% |
| 5 Rooms | 5,541, 17.17%, see rank | 20.93% | 21.24% |
| 6 Rooms | 5,179, 16.05%, see rank | 17.83% | 18.70% |
| 7 Rooms | 3,315, 10.27%, see rank | 11.97% | 12.36% |
| 8 Rooms | 1,579, 4.89%, see rank | 7.51% | 8.26% |
| 9 Rooms or More | 2,068, 6.41%, see rank | 8.21% | 9.16% |
| Median Rooms | 4.80, see rank | 5.30 | 5.40 |
* 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.
