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21821 Zip Code Historical Household and Family Data
ACS 2010-2014 data
Total population: 896
| 21821 Zip Code | Maryland | U.S. | |
| Total Households | 473, 100% | 2,155,983 | 116,211,092 |
| Average Household Size | 1.89, see rank | 2.67 | 2.63 |
| 1 Person Households | 152, 32.14%, see rank | 26.95% | 27.57% |
| 2 or More Person Households | 321, 67.86%, see rank | 73.05% | 72.43% |
| Family Households (Families) | 309, 65.33%, see rank | 67.07% | 66.22% |
| Average Family Size | 2.33, see rank | 3.35 | 3.32 |
| Married-Couple Family | 247, 52.22%, see rank | 47.68% | 48.42% |
| Nonfamily Households | 164, 34.67%, see rank | 32.93% | 33.78% |
US Census 2010 data
Total population: 991
| 21821 Zip Code | Maryland | U.S. | |
| Total Households | 433, 100% | 2,156,411 | 116,716,292 |
| Average Household Size | 2.29, see rank | 2.61 | 2.58 |
| 1 Person Households | 123, 28.41%, see rank | 26.11% | 26.74% |
| 2 or More Person Households | 310, 71.59%, see rank | 73.89% | 73.26% |
| Family Households (Families) | 288, 66.51%, see rank | 67.10% | 66.43% |
| Average Family Size | 2.76, see rank | 3.15 | 3.14 |
| Married-Couple Family | 228, 52.66%, see rank | 47.61% | 48.42% |
| Nonfamily Households | 145, 33.49%, see rank | 32.90% | 33.57% |
ACS 2008-2012 data
Total population: 842
| 21821 Zip Code | Maryland | U.S. | |
| Total Households | 416, 100% | 2,138,806 | 115,226,802 |
| Average Household Size | 2.02, see rank | 2.64 | 2.61 |
| 1 Person Households | 109, 26.20%, see rank | 27.12% | 27.45% |
| 2 or More Person Households | 307, 73.80%, see rank | 72.88% | 72.55% |
| Family Households (Families) | 276, 66.35%, see rank | 66.97% | 66.47% |
| Average Family Size | 2.44, see rank | 3.32 | 3.29 |
| Married-Couple Family | 250, 60.10%, see rank | 48.03% | 48.97% |
| Nonfamily Households | 140, 33.65%, see rank | 33.03% | 33.53% |
US Census 2000 data
Total population: 1,143
| 21821 Zip Code | Maryland | U.S. | |
| Total Households | 485, 100% | 1,980,859 | 105,480,101 |
| Average Household Size | 2.36, see rank | 2.61 | 2.59 |
| 1 Person Households | 127, 26.19%, see rank | 25.01% | 25.82% |
| 2 or More Person Households | 358, 73.81%, see rank | 74.99% | 74.18% |
| Family Households (Families) | 333, 68.66%, see rank | 68.62% | 68.06% |
| Average Family Size | 2.86, see rank | 3.13 | 3.14 |
| Married-Couple Family | 265, 54.64%, see rank | 50.21% | 51.66% |
| Nonfamily Households | 152, 31.34%, 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.