Cook County Historical Amount of Rooms in a House Data
ACS 2010-2014 data
| | Cook County | Illinois | U.S. |
| Total Housing Units | 2,177,033, 100% | 5,299,433 | 132,741,033 |
| 1 Room | 79,783, 3.66%, see rank | 2.20% | 1.95% |
| 2 Rooms | 70,146, 3.22%, see rank | 2.22% | 2.48% |
| 3 Rooms | 245,193, 11.26%, see rank | 8.27% | 9.13% |
| 4 Rooms | 399,614, 18.36%, see rank | 16.08% | 16.60% |
| 5 Rooms | 460,195, 21.14%, see rank | 20.31% | 20.41% |
| 6 Rooms | 383,388, 17.61%, see rank | 18.17% | 18.06% |
| 7 Rooms | 218,812, 10.05%, see rank | 12.12% | 12.27% |
| 8 Rooms | 146,268, 6.72%, see rank | 8.93% | 8.48% |
| 9 Rooms or More | 173,634, 7.98%, see rank | 11.70% | 10.60% |
| Median Rooms | 5.10, see rank | 5.60 | 5.50 |
ACS 2008-2012 data
| | Cook County | Illinois | U.S. |
| Total Housing Units | 2,178,739, 100% | 5,293,619 | 131,642,457 |
| 1 Room | 86,263, 3.96%, see rank | 2.27% | 1.95% |
| 2 Rooms | 65,295, 3.00%, see rank | 2.06% | 2.36% |
| 3 Rooms | 237,743, 10.91%, see rank | 8.08% | 8.97% |
| 4 Rooms | 396,854, 18.21%, see rank | 16.02% | 16.57% |
| 5 Rooms | 459,983, 21.11%, see rank | 20.31% | 20.41% |
| 6 Rooms | 386,992, 17.76%, see rank | 18.21% | 18.25% |
| 7 Rooms | 220,994, 10.14%, see rank | 12.29% | 12.38% |
| 8 Rooms | 145,554, 6.68%, see rank | 8.98% | 8.59% |
| 9 Rooms or More | 179,061, 8.22%, see rank | 11.78% | 10.52% |
| Median Rooms | 5.20, see rank | 5.60 | 5.50 |
ACS 2006-2010 data
| | Cook County | Illinois | U.S. |
| Total Housing Units | 2,173,433, 100% | 5,267,614 | 130,038,080 |
| 1 Room | 73,652, 3.39%, see rank | 1.89% | 1.59% |
| 2 Rooms | 70,058, 3.22%, see rank | 2.25% | 2.62% |
| 3 Rooms | 232,557, 10.70%, see rank | 8.07% | 9.02% |
| 4 Rooms | 395,941, 18.22%, see rank | 16.25% | 16.85% |
| 5 Rooms | 470,505, 21.65%, see rank | 20.76% | 20.93% |
| 6 Rooms | 395,486, 18.20%, see rank | 18.53% | 18.56% |
| 7 Rooms | 222,317, 10.23%, see rank | 12.32% | 12.38% |
| 8 Rooms | 144,916, 6.67%, see rank | 8.96% | 8.39% |
| 9 Rooms or More | 168,001, 7.73%, see rank | 10.96% | 9.65% |
| Median Rooms | 5.20, see rank | 5.50 | 5.50 |
ACS 2005-2009 data
| | Cook County | Illinois | U.S. |
| Total Housing Units | 2,170,750, 100% | 5,234,756 | 127,699,712 |
| 1 Room | 67,672, 3.12%, see rank | 1.73% | 1.39% |
| 2 Rooms | 72,932, 3.36%, see rank | 2.38% | 2.78% |
| 3 Rooms | 234,165, 10.79%, see rank | 8.21% | 9.07% |
| 4 Rooms | 394,020, 18.15%, see rank | 16.40% | 17.03% |
| 5 Rooms | 477,322, 21.99%, see rank | 21.07% | 21.24% |
| 6 Rooms | 395,670, 18.23%, see rank | 18.62% | 18.70% |
| 7 Rooms | 223,030, 10.27%, see rank | 12.35% | 12.36% |
| 8 Rooms | 143,404, 6.61%, see rank | 8.88% | 8.26% |
| 9 Rooms or More | 162,535, 7.49%, see rank | 10.37% | 9.16% |
| Median Rooms | 5.20, see rank | 5.50 | 5.40 |
US Census 2000 data
| | Cook County | Illinois | U.S. |
| Total Housing Units | 2,096,121, 100% | 4,885,615 | 115,904,641 |
| 1 Room | 70,870, 3.38%, see rank | 1.95% | 2.20% |
| 2 Rooms | 115,946, 5.53%, see rank | 3.80% | 4.81% |
| 3 Rooms | 231,433, 11.04%, see rank | 8.53% | 9.84% |
| 4 Rooms | 358,238, 17.09%, see rank | 15.96% | 15.97% |
| 5 Rooms | 470,404, 22.44%, see rank | 21.73% | 20.89% |
| 6 Rooms | 372,844, 17.79%, see rank | 18.61% | 18.45% |
| 7 Rooms | 211,582, 10.09%, see rank | 12.30% | 12.06% |
| 8 Rooms | 137,000, 6.54%, see rank | 8.72% | 8.06% |
| 9 Rooms or More | 127,804, 6.10%, see rank | 8.40% | 7.70% |
| Median Rooms | 5.10, see rank | 5.40 | 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.
