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21218 Zip Code Historical Household and Family Data
ACS 2010-2014 data
Total population: 49,259
| 21218 Zip Code | Maryland | U.S. | |
| Total Households | 19,066, 100% | 2,155,983 | 116,211,092 |
| Average Household Size | 2.35, see rank | 2.67 | 2.63 |
| 1 Person Households | 8,226, 43.14%, see rank | 26.95% | 27.57% |
| 2 or More Person Households | 10,840, 56.86%, see rank | 73.05% | 72.43% |
| Family Households (Families) | 8,819, 46.26%, see rank | 67.07% | 66.22% |
| Average Family Size | 3.46, see rank | 3.35 | 3.32 |
| Married-Couple Family | 4,123, 21.62%, see rank | 47.68% | 48.42% |
| Nonfamily Households | 10,247, 53.74%, see rank | 32.93% | 33.78% |
US Census 2010 data
Total population: 49,796
| 21218 Zip Code | Maryland | U.S. | |
| Total Households | 19,860, 100% | 2,156,411 | 116,716,292 |
| Average Household Size | 2.26, see rank | 2.61 | 2.58 |
| 1 Person Households | 7,944, 40.00%, see rank | 26.11% | 26.74% |
| 2 or More Person Households | 11,916, 60.00%, see rank | 73.89% | 73.26% |
| Family Households (Families) | 9,269, 46.67%, see rank | 67.10% | 66.43% |
| Average Family Size | 3.11, see rank | 3.15 | 3.14 |
| Married-Couple Family | 4,262, 21.46%, see rank | 47.61% | 48.42% |
| Nonfamily Households | 10,591, 53.33%, see rank | 32.90% | 33.57% |
ACS 2008-2012 data
Total population: 51,290
| 21218 Zip Code | Maryland | U.S. | |
| Total Households | 19,242, 100% | 2,138,806 | 115,226,802 |
| Average Household Size | 2.43, see rank | 2.64 | 2.61 |
| 1 Person Households | 8,114, 42.17%, see rank | 27.12% | 27.45% |
| 2 or More Person Households | 11,128, 57.83%, see rank | 72.88% | 72.55% |
| Family Households (Families) | 9,129, 47.44%, see rank | 66.97% | 66.47% |
| Average Family Size | 3.62, see rank | 3.32 | 3.29 |
| Married-Couple Family | 3,933, 20.44%, see rank | 48.03% | 48.97% |
| Nonfamily Households | 10,113, 52.56%, see rank | 33.03% | 33.53% |
US Census 2000 data
Total population: 55,059
| 21218 Zip Code | Maryland | U.S. | |
| Total Households | 21,011, 100% | 1,980,859 | 105,480,101 |
| Average Household Size | 2.36, see rank | 2.61 | 2.59 |
| 1 Person Households | 8,043, 38.28%, see rank | 25.01% | 25.82% |
| 2 or More Person Households | 12,968, 61.72%, see rank | 74.99% | 74.18% |
| Family Households (Families) | 10,593, 50.42%, see rank | 68.62% | 68.06% |
| Average Family Size | 3.22, see rank | 3.13 | 3.14 |
| Married-Couple Family | 4,875, 23.20%, see rank | 50.21% | 51.66% |
| Nonfamily Households | 10,418, 49.58%, 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.