21531 Zip Code Historical House Amount of Units in Structure Data
ACS 2010-2014 data
| | 21531 Zip Code | Maryland | U.S. |
| Total Housing Units | 1,290, 100% | 2,399,375 | 132,741,033 |
| 1-unit, Detached | 954, 73.95%, see rank | 51.72% | 61.65% |
| 1-unit, Attached | 26, 2.02%, see rank | 21.19% | 5.82% |
| 2 Units | 2, 0.16%, see rank | 1.60% | 3.75% |
| 3 or 4 Units | 23, 1.78%, see rank | 2.20% | 4.43% |
| 5 to 9 Units | 21, 1.63%, see rank | 4.94% | 4.78% |
| 10 or More Units | 26, 2.02%, see rank | 16.70% | 13.08% |
| Mobile Home, Boat, RV, Van, etc. | 238, 18.45%, see rank | 1.63% | 6.49% |
ACS 2008-2012 data
| | 21531 Zip Code | Maryland | U.S. |
| Total Housing Units | 1,319, 100% | 2,378,932 | 131,642,457 |
| 1-unit, Detached | 976, 74.00%, see rank | 51.71% | 61.70% |
| 1-unit, Attached | 22, 1.67%, see rank | 21.10% | 5.79% |
| 2 Units | 26, 1.97%, see rank | 1.68% | 3.80% |
| 3 or 4 Units | 32, 2.43%, see rank | 2.22% | 4.44% |
| 5 to 9 Units | 31, 2.35%, see rank | 5.02% | 4.78% |
| 10 or More Units | 50, 3.79%, see rank | 16.53% | 12.89% |
| Mobile Home, Boat, RV, Van, etc. | 182, 13.80%, see rank | 1.74% | 6.60% |
US Census 2000 data
| | 21531 Zip Code | Maryland | U.S. |
| Total Housing Units | 1,212, 100% | 2,145,283 | 115,904,641 |
| 1-unit, Detached | 802, 66.17%, see rank | 51.17% | 60.28% |
| 1-unit, Attached | 15, 1.24%, see rank | 21.04% | 5.56% |
| 2 Units | 15, 1.24%, see rank | 2.13% | 4.31% |
| 3 or 4 Units | 22, 1.82%, see rank | 2.94% | 4.74% |
| 5 to 9 Units | 31, 2.56%, see rank | 5.60% | 4.67% |
| 10 or More Units | 28, 2.31%, see rank | 15.15% | 12.64% |
| Mobile Home, Boat, RV, Van, etc. | 299, 24.67%, 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.
