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21811 Zip Code Historical Household and Family Data
ACS 2010-2014 data
Total population: 20,994
| 21811 Zip Code | Maryland | U.S. | |
| Total Households | 8,688, 100% | 2,155,983 | 116,211,092 |
| Average Household Size | 2.40, see rank | 2.67 | 2.63 |
| 1 Person Households | 2,448, 28.18%, see rank | 26.95% | 27.57% |
| 2 or More Person Households | 6,240, 71.82%, see rank | 73.05% | 72.43% |
| Family Households (Families) | 5,817, 66.95%, see rank | 67.07% | 66.22% |
| Average Family Size | 2.99, see rank | 3.35 | 3.32 |
| Married-Couple Family | 4,808, 55.34%, see rank | 47.68% | 48.42% |
| Nonfamily Households | 2,871, 33.05%, see rank | 32.93% | 33.78% |
US Census 2010 data
Total population: 22,550
| 21811 Zip Code | Maryland | U.S. | |
| Total Households | 9,785, 100% | 2,156,411 | 116,716,292 |
| Average Household Size | 2.29, see rank | 2.61 | 2.58 |
| 1 Person Households | 2,434, 24.87%, see rank | 26.11% | 26.74% |
| 2 or More Person Households | 7,351, 75.13%, see rank | 73.89% | 73.26% |
| Family Households (Families) | 6,841, 69.91%, see rank | 67.10% | 66.43% |
| Average Family Size | 2.69, see rank | 3.15 | 3.14 |
| Married-Couple Family | 5,525, 56.46%, see rank | 47.61% | 48.42% |
| Nonfamily Households | 2,944, 30.09%, see rank | 32.90% | 33.57% |
ACS 2008-2012 data
Total population: 20,834
| 21811 Zip Code | Maryland | U.S. | |
| Total Households | 8,694, 100% | 2,138,806 | 115,226,802 |
| Average Household Size | 2.37, see rank | 2.64 | 2.61 |
| 1 Person Households | 2,231, 25.66%, see rank | 27.12% | 27.45% |
| 2 or More Person Households | 6,463, 74.34%, see rank | 72.88% | 72.55% |
| Family Households (Families) | 5,889, 67.74%, see rank | 66.97% | 66.47% |
| Average Family Size | 2.89, see rank | 3.32 | 3.29 |
| Married-Couple Family | 4,930, 56.71%, see rank | 48.03% | 48.97% |
| Nonfamily Households | 2,805, 32.26%, see rank | 33.03% | 33.53% |
US Census 2000 data
Total population: 19,476
| 21811 Zip Code | Maryland | U.S. | |
| Total Households | 8,183, 100% | 1,980,859 | 105,480,101 |
| Average Household Size | 2.36, see rank | 2.61 | 2.59 |
| 1 Person Households | 1,801, 22.01%, see rank | 25.01% | 25.82% |
| 2 or More Person Households | 6,382, 77.99%, see rank | 74.99% | 74.18% |
| Family Households (Families) | 5,944, 72.64%, see rank | 68.62% | 68.06% |
| Average Family Size | 2.72, see rank | 3.13 | 3.14 |
| Married-Couple Family | 4,875, 59.57%, see rank | 50.21% | 51.66% |
| Nonfamily Households | 2,239, 27.36%, 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.