Baltimore County Historical Amount of Rooms in a House Data
ACS 2010-2014 data
| | Baltimore County | Maryland | U.S. |
| Total Housing Units | 336,281, 100% | 2,399,375 | 132,741,033 |
| 1 Room | 3,238, 0.96%, see rank | 1.15% | 1.95% |
| 2 Rooms | 3,865, 1.15%, see rank | 1.62% | 2.48% |
| 3 Rooms | 21,639, 6.43%, see rank | 7.62% | 9.13% |
| 4 Rooms | 44,628, 13.27%, see rank | 12.84% | 16.60% |
| 5 Rooms | 53,455, 15.90%, see rank | 14.80% | 20.41% |
| 6 Rooms | 62,948, 18.72%, see rank | 17.19% | 18.06% |
| 7 Rooms | 53,161, 15.81%, see rank | 14.01% | 12.27% |
| 8 Rooms | 37,477, 11.14%, see rank | 11.30% | 8.48% |
| 9 Rooms or More | 55,870, 16.61%, see rank | 19.47% | 10.60% |
| Median Rooms | 6.20, see rank | 6.20 | 5.50 |
ACS 2008-2012 data
| | Baltimore County | Maryland | U.S. |
| Total Housing Units | 335,288, 100% | 2,378,932 | 131,642,457 |
| 1 Room | 3,013, 0.90%, see rank | 1.19% | 1.95% |
| 2 Rooms | 3,805, 1.13%, see rank | 1.55% | 2.36% |
| 3 Rooms | 22,310, 6.65%, see rank | 7.57% | 8.97% |
| 4 Rooms | 45,784, 13.66%, see rank | 12.93% | 16.57% |
| 5 Rooms | 53,300, 15.90%, see rank | 14.68% | 20.41% |
| 6 Rooms | 60,499, 18.04%, see rank | 17.04% | 18.25% |
| 7 Rooms | 52,737, 15.73%, see rank | 14.15% | 12.38% |
| 8 Rooms | 37,478, 11.18%, see rank | 11.43% | 8.59% |
| 9 Rooms or More | 56,362, 16.81%, see rank | 19.46% | 10.52% |
| Median Rooms | 6.20, see rank | 6.20 | 5.50 |
ACS 2006-2010 data
| | Baltimore County | Maryland | U.S. |
| Total Housing Units | 333,175, 100% | 2,354,870 | 130,038,080 |
| 1 Room | 2,142, 0.64%, see rank | 0.94% | 1.59% |
| 2 Rooms | 4,569, 1.37%, see rank | 1.91% | 2.62% |
| 3 Rooms | 23,820, 7.15%, see rank | 7.80% | 9.02% |
| 4 Rooms | 45,373, 13.62%, see rank | 13.02% | 16.85% |
| 5 Rooms | 54,419, 16.33%, see rank | 15.24% | 20.93% |
| 6 Rooms | 61,953, 18.59%, see rank | 17.31% | 18.56% |
| 7 Rooms | 52,520, 15.76%, see rank | 14.12% | 12.38% |
| 8 Rooms | 37,115, 11.14%, see rank | 11.38% | 8.39% |
| 9 Rooms or More | 51,264, 15.39%, see rank | 18.27% | 9.65% |
| Median Rooms | 6.10, see rank | 6.10 | 5.50 |
ACS 2005-2009 data
| | Baltimore County | Maryland | U.S. |
| Total Housing Units | 327,067, 100% | 2,313,193 | 127,699,712 |
| 1 Room | 1,653, 0.51%, see rank | 0.78% | 1.39% |
| 2 Rooms | 4,700, 1.44%, see rank | 2.00% | 2.78% |
| 3 Rooms | 23,575, 7.21%, see rank | 7.81% | 9.07% |
| 4 Rooms | 45,507, 13.91%, see rank | 13.04% | 17.03% |
| 5 Rooms | 53,322, 16.30%, see rank | 15.53% | 21.24% |
| 6 Rooms | 61,960, 18.94%, see rank | 17.62% | 18.70% |
| 7 Rooms | 52,214, 15.96%, see rank | 14.14% | 12.36% |
| 8 Rooms | 36,596, 11.19%, see rank | 11.50% | 8.26% |
| 9 Rooms or More | 47,540, 14.54%, see rank | 17.56% | 9.16% |
| Median Rooms | 6.10, see rank | 6.10 | 5.40 |
US Census 2000 data
| | Baltimore County | Maryland | U.S. |
| Total Housing Units | 313,734, 100% | 2,145,283 | 115,904,641 |
| 1 Room | 2,802, 0.89%, see rank | 1.50% | 2.20% |
| 2 Rooms | 8,129, 2.59%, see rank | 3.52% | 4.81% |
| 3 Rooms | 22,811, 7.27%, see rank | 8.03% | 9.84% |
| 4 Rooms | 39,902, 12.72%, see rank | 11.67% | 15.97% |
| 5 Rooms | 52,830, 16.84%, see rank | 15.60% | 20.89% |
| 6 Rooms | 62,635, 19.96%, see rank | 18.50% | 18.45% |
| 7 Rooms | 49,351, 15.73%, see rank | 14.10% | 12.06% |
| 8 Rooms | 37,209, 11.86%, see rank | 12.17% | 8.06% |
| 9 Rooms or More | 38,065, 12.13%, see rank | 14.91% | 7.70% |
| Median Rooms | 6.00, see rank | 6.00 | 5.30 |
* 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.
