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21237 Zip Code Historical Household and Family Data
ACS 2010-2014 data
Total population: 30,342
| 21237 Zip Code | Maryland | U.S. | |
| Total Households | 11,550, 100% | 2,155,983 | 116,211,092 |
| Average Household Size | 2.59, see rank | 2.67 | 2.63 |
| 1 Person Households | 3,304, 28.61%, see rank | 26.95% | 27.57% |
| 2 or More Person Households | 8,246, 71.39%, see rank | 73.05% | 72.43% |
| Family Households (Families) | 7,447, 64.48%, see rank | 67.07% | 66.22% |
| Average Family Size | 3.30, see rank | 3.35 | 3.32 |
| Married-Couple Family | 4,841, 41.91%, see rank | 47.68% | 48.42% |
| Nonfamily Households | 4,103, 35.52%, see rank | 32.93% | 33.78% |
US Census 2010 data
Total population: 30,059
| 21237 Zip Code | Maryland | U.S. | |
| Total Households | 11,748, 100% | 2,156,411 | 116,716,292 |
| Average Household Size | 2.52, see rank | 2.61 | 2.58 |
| 1 Person Households | 3,290, 28.00%, see rank | 26.11% | 26.74% |
| 2 or More Person Households | 8,458, 72.00%, see rank | 73.89% | 73.26% |
| Family Households (Families) | 7,577, 64.50%, see rank | 67.10% | 66.43% |
| Average Family Size | 3.09, see rank | 3.15 | 3.14 |
| Married-Couple Family | 5,143, 43.78%, see rank | 47.61% | 48.42% |
| Nonfamily Households | 4,171, 35.50%, see rank | 32.90% | 33.57% |
ACS 2008-2012 data
Total population: 29,728
| 21237 Zip Code | Maryland | U.S. | |
| Total Households | 11,481, 100% | 2,138,806 | 115,226,802 |
| Average Household Size | 2.56, see rank | 2.64 | 2.61 |
| 1 Person Households | 3,212, 27.98%, see rank | 27.12% | 27.45% |
| 2 or More Person Households | 8,269, 72.02%, see rank | 72.88% | 72.55% |
| Family Households (Families) | 7,424, 64.66%, see rank | 66.97% | 66.47% |
| Average Family Size | 3.25, see rank | 3.32 | 3.29 |
| Married-Couple Family | 5,099, 44.41%, see rank | 48.03% | 48.97% |
| Nonfamily Households | 4,057, 35.34%, see rank | 33.03% | 33.53% |
US Census 2000 data
Total population: 25,414
| 21237 Zip Code | Maryland | U.S. | |
| Total Households | 10,316, 100% | 1,980,859 | 105,480,101 |
| Average Household Size | 2.44, see rank | 2.61 | 2.59 |
| 1 Person Households | 2,842, 27.55%, see rank | 25.01% | 25.82% |
| 2 or More Person Households | 7,474, 72.45%, see rank | 74.99% | 74.18% |
| Family Households (Families) | 6,706, 65.01%, see rank | 68.62% | 68.06% |
| Average Family Size | 2.98, see rank | 3.13 | 3.14 |
| Married-Couple Family | 4,913, 47.63%, see rank | 50.21% | 51.66% |
| Nonfamily Households | 3,610, 34.99%, see rank | 31.38% | 31.94% |
* 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.