21701 Zip Code Historical House Amount of Units in Structure Data
ACS 2010-2014 data
| | 21701 Zip Code | Maryland | U.S. |
| Total Housing Units | 15,978, 100% | 2,399,375 | 132,741,033 |
| 1-unit, Detached | 6,834, 42.77%, see rank | 51.72% | 61.65% |
| 1-unit, Attached | 4,367, 27.33%, see rank | 21.19% | 5.82% |
| 2 Units | 545, 3.41%, see rank | 1.60% | 3.75% |
| 3 or 4 Units | 758, 4.74%, see rank | 2.20% | 4.43% |
| 5 to 9 Units | 992, 6.21%, see rank | 4.94% | 4.78% |
| 10 or More Units | 2,414, 15.11%, see rank | 16.70% | 13.08% |
| Mobile Home, Boat, RV, Van, etc. | 68, 0.43%, see rank | 1.63% | 6.49% |
ACS 2008-2012 data
| | 21701 Zip Code | Maryland | U.S. |
| Total Housing Units | 15,885, 100% | 2,378,932 | 131,642,457 |
| 1-unit, Detached | 6,552, 41.25%, see rank | 51.71% | 61.70% |
| 1-unit, Attached | 4,592, 28.91%, see rank | 21.10% | 5.79% |
| 2 Units | 683, 4.30%, see rank | 1.68% | 3.80% |
| 3 or 4 Units | 735, 4.63%, see rank | 2.22% | 4.44% |
| 5 to 9 Units | 1,029, 6.48%, see rank | 5.02% | 4.78% |
| 10 or More Units | 2,261, 14.23%, see rank | 16.53% | 12.89% |
| Mobile Home, Boat, RV, Van, etc. | 33, 0.21%, see rank | 1.74% | 6.60% |
US Census 2000 data
| | 21701 Zip Code | Maryland | U.S. |
| Total Housing Units | 13,858, 100% | 2,145,283 | 115,904,641 |
| 1-unit, Detached | 5,846, 42.19%, see rank | 51.17% | 60.28% |
| 1-unit, Attached | 3,853, 27.80%, see rank | 21.04% | 5.56% |
| 2 Units | 607, 4.38%, see rank | 2.13% | 4.31% |
| 3 or 4 Units | 938, 6.77%, see rank | 2.94% | 4.74% |
| 5 to 9 Units | 792, 5.72%, see rank | 5.60% | 4.67% |
| 10 or More Units | 1,785, 12.88%, see rank | 15.15% | 12.64% |
| Mobile Home, Boat, RV, Van, etc. | 37, 0.27%, see rank | 1.96% | 7.80% |
* 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.
