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21851 Zip Code Historical Household and Family Data
ACS 2010-2014 data
Total population: 7,657
| 21851 Zip Code | Maryland | U.S. | |
| Total Households | 2,805, 100% | 2,155,983 | 116,211,092 |
| Average Household Size | 2.70, see rank | 2.67 | 2.63 |
| 1 Person Households | 854, 30.45%, see rank | 26.95% | 27.57% |
| 2 or More Person Households | 1,951, 69.55%, see rank | 73.05% | 72.43% |
| Family Households (Families) | 1,849, 65.92%, see rank | 67.07% | 66.22% |
| Average Family Size | 3.51, see rank | 3.35 | 3.32 |
| Married-Couple Family | 1,174, 41.85%, see rank | 47.68% | 48.42% |
| Nonfamily Households | 956, 34.08%, see rank | 32.93% | 33.78% |
US Census 2010 data
Total population: 7,315
| 21851 Zip Code | Maryland | U.S. | |
| Total Households | 2,914, 100% | 2,156,411 | 116,716,292 |
| Average Household Size | 2.48, see rank | 2.61 | 2.58 |
| 1 Person Households | 786, 26.97%, see rank | 26.11% | 26.74% |
| 2 or More Person Households | 2,128, 73.03%, see rank | 73.89% | 73.26% |
| Family Households (Families) | 2,005, 68.81%, see rank | 67.10% | 66.43% |
| Average Family Size | 2.98, see rank | 3.15 | 3.14 |
| Married-Couple Family | 1,285, 44.10%, see rank | 47.61% | 48.42% |
| Nonfamily Households | 909, 31.19%, see rank | 32.90% | 33.57% |
ACS 2008-2012 data
Total population: 7,582
| 21851 Zip Code | Maryland | U.S. | |
| Total Households | 2,849, 100% | 2,138,806 | 115,226,802 |
| Average Household Size | 2.63, see rank | 2.64 | 2.61 |
| 1 Person Households | 749, 26.29%, see rank | 27.12% | 27.45% |
| 2 or More Person Households | 2,100, 73.71%, see rank | 72.88% | 72.55% |
| Family Households (Families) | 1,987, 69.74%, see rank | 66.97% | 66.47% |
| Average Family Size | 3.27, see rank | 3.32 | 3.29 |
| Married-Couple Family | 1,332, 46.75%, see rank | 48.03% | 48.97% |
| Nonfamily Households | 862, 30.26%, see rank | 33.03% | 33.53% |
US Census 2000 data
Total population: 7,274
| 21851 Zip Code | Maryland | U.S. | |
| Total Households | 2,876, 100% | 1,980,859 | 105,480,101 |
| Average Household Size | 2.50, see rank | 2.61 | 2.59 |
| 1 Person Households | 794, 27.61%, see rank | 25.01% | 25.82% |
| 2 or More Person Households | 2,082, 72.39%, see rank | 74.99% | 74.18% |
| Family Households (Families) | 1,970, 68.50%, see rank | 68.62% | 68.06% |
| Average Family Size | 3.04, see rank | 3.13 | 3.14 |
| Married-Couple Family | 1,352, 47.01%, see rank | 50.21% | 51.66% |
| Nonfamily Households | 906, 31.50%, 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.