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21120 Zip Code Historical Household and Family Data
ACS 2010-2014 data
Total population: 7,155
| 21120 Zip Code | Maryland | U.S. | |
| Total Households | 2,427, 100% | 2,155,983 | 116,211,092 |
| Average Household Size | 2.94, see rank | 2.67 | 2.63 |
| 1 Person Households | 306, 12.61%, see rank | 26.95% | 27.57% |
| 2 or More Person Households | 2,121, 87.39%, see rank | 73.05% | 72.43% |
| Family Households (Families) | 2,070, 85.29%, see rank | 67.07% | 66.22% |
| Average Family Size | 3.24, see rank | 3.35 | 3.32 |
| Married-Couple Family | 1,909, 78.66%, see rank | 47.68% | 48.42% |
| Nonfamily Households | 357, 14.71%, see rank | 32.93% | 33.78% |
US Census 2010 data
Total population: 6,967
| 21120 Zip Code | Maryland | U.S. | |
| Total Households | 2,452, 100% | 2,156,411 | 116,716,292 |
| Average Household Size | 2.84, see rank | 2.61 | 2.58 |
| 1 Person Households | 346, 14.11%, see rank | 26.11% | 26.74% |
| 2 or More Person Households | 2,106, 85.89%, see rank | 73.89% | 73.26% |
| Family Households (Families) | 2,002, 81.65%, see rank | 67.10% | 66.43% |
| Average Family Size | 3.15, see rank | 3.15 | 3.14 |
| Married-Couple Family | 1,798, 73.33%, see rank | 47.61% | 48.42% |
| Nonfamily Households | 450, 18.35%, see rank | 32.90% | 33.57% |
ACS 2008-2012 data
Total population: 6,732
| 21120 Zip Code | Maryland | U.S. | |
| Total Households | 2,372, 100% | 2,138,806 | 115,226,802 |
| Average Household Size | 2.83, see rank | 2.64 | 2.61 |
| 1 Person Households | 364, 15.35%, see rank | 27.12% | 27.45% |
| 2 or More Person Households | 2,008, 84.65%, see rank | 72.88% | 72.55% |
| Family Households (Families) | 1,936, 81.62%, see rank | 66.97% | 66.47% |
| Average Family Size | 3.17, see rank | 3.32 | 3.29 |
| Married-Couple Family | 1,737, 73.23%, see rank | 48.03% | 48.97% |
| Nonfamily Households | 436, 18.38%, see rank | 33.03% | 33.53% |
US Census 2000 data
Total population: 6,563
| 21120 Zip Code | Maryland | U.S. | |
| Total Households | 2,210, 100% | 1,980,859 | 105,480,101 |
| Average Household Size | 2.96, see rank | 2.61 | 2.59 |
| 1 Person Households | 249, 11.27%, see rank | 25.01% | 25.82% |
| 2 or More Person Households | 1,961, 88.73%, see rank | 74.99% | 74.18% |
| Family Households (Families) | 1,873, 84.75%, see rank | 68.62% | 68.06% |
| Average Family Size | 3.22, see rank | 3.13 | 3.14 |
| Married-Couple Family | 1,682, 76.11%, see rank | 50.21% | 51.66% |
| Nonfamily Households | 337, 15.25%, 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.