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21204 Zip Code Historical Household and Family Data
ACS 2010-2014 data
Total population: 20,269
| 21204 Zip Code | Maryland | U.S. | |
| Total Households | 7,303, 100% | 2,155,983 | 116,211,092 |
| Average Household Size | 2.24, see rank | 2.67 | 2.63 |
| 1 Person Households | 2,770, 37.93%, see rank | 26.95% | 27.57% |
| 2 or More Person Households | 4,533, 62.07%, see rank | 73.05% | 72.43% |
| Family Households (Families) | 3,772, 51.65%, see rank | 67.07% | 66.22% |
| Average Family Size | 3.01, see rank | 3.35 | 3.32 |
| Married-Couple Family | 2,968, 40.64%, see rank | 47.68% | 48.42% |
| Nonfamily Households | 3,531, 48.35%, see rank | 32.93% | 33.78% |
US Census 2010 data
Total population: 20,253
| 21204 Zip Code | Maryland | U.S. | |
| Total Households | 7,580, 100% | 2,156,411 | 116,716,292 |
| Average Household Size | 2.16, see rank | 2.61 | 2.58 |
| 1 Person Households | 2,754, 36.33%, see rank | 26.11% | 26.74% |
| 2 or More Person Households | 4,826, 63.67%, see rank | 73.89% | 73.26% |
| Family Households (Families) | 3,528, 46.54%, see rank | 67.10% | 66.43% |
| Average Family Size | 2.92, see rank | 3.15 | 3.14 |
| Married-Couple Family | 2,850, 37.60%, see rank | 47.61% | 48.42% |
| Nonfamily Households | 4,052, 53.46%, see rank | 32.90% | 33.57% |
ACS 2008-2012 data
Total population: 19,930
| 21204 Zip Code | Maryland | U.S. | |
| Total Households | 7,076, 100% | 2,138,806 | 115,226,802 |
| Average Household Size | 2.25, see rank | 2.64 | 2.61 |
| 1 Person Households | 2,530, 35.75%, see rank | 27.12% | 27.45% |
| 2 or More Person Households | 4,546, 64.25%, see rank | 72.88% | 72.55% |
| Family Households (Families) | 3,660, 51.72%, see rank | 66.97% | 66.47% |
| Average Family Size | 3.03, see rank | 3.32 | 3.29 |
| Married-Couple Family | 3,007, 42.50%, see rank | 48.03% | 48.97% |
| Nonfamily Households | 3,416, 48.28%, see rank | 33.03% | 33.53% |
US Census 2000 data
Total population: 20,157
| 21204 Zip Code | Maryland | U.S. | |
| Total Households | 7,109, 100% | 1,980,859 | 105,480,101 |
| Average Household Size | 2.12, see rank | 2.61 | 2.59 |
| 1 Person Households | 2,648, 37.25%, see rank | 25.01% | 25.82% |
| 2 or More Person Households | 4,461, 62.75%, see rank | 74.99% | 74.18% |
| Family Households (Families) | 3,543, 49.84%, see rank | 68.62% | 68.06% |
| Average Family Size | 2.84, see rank | 3.13 | 3.14 |
| Married-Couple Family | 2,989, 42.05%, see rank | 50.21% | 51.66% |
| Nonfamily Households | 3,566, 50.16%, 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.