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21521 Zip Code Historical Household and Family Data
ACS 2010-2014 data
Total population: 1,256
| 21521 Zip Code | Maryland | U.S. | |
| Total Households | 551, 100% | 2,155,983 | 116,211,092 |
| Average Household Size | 2.28, see rank | 2.67 | 2.63 |
| 1 Person Households | 173, 31.40%, see rank | 26.95% | 27.57% |
| 2 or More Person Households | 378, 68.60%, see rank | 73.05% | 72.43% |
| Family Households (Families) | 366, 66.42%, see rank | 67.07% | 66.22% |
| Average Family Size | 2.90, see rank | 3.35 | 3.32 |
| Married-Couple Family | 293, 53.18%, see rank | 47.68% | 48.42% |
| Nonfamily Households | 185, 33.58%, see rank | 32.93% | 33.78% |
US Census 2010 data
Total population: 1,265
| 21521 Zip Code | Maryland | U.S. | |
| Total Households | 541, 100% | 2,156,411 | 116,716,292 |
| Average Household Size | 2.34, see rank | 2.61 | 2.58 |
| 1 Person Households | 135, 24.95%, see rank | 26.11% | 26.74% |
| 2 or More Person Households | 406, 75.05%, see rank | 73.89% | 73.26% |
| Family Households (Families) | 387, 71.53%, see rank | 67.10% | 66.43% |
| Average Family Size | 2.74, see rank | 3.15 | 3.14 |
| Married-Couple Family | 308, 56.93%, see rank | 47.61% | 48.42% |
| Nonfamily Households | 154, 28.47%, see rank | 32.90% | 33.57% |
ACS 2008-2012 data
Total population: 1,498
| 21521 Zip Code | Maryland | U.S. | |
| Total Households | 536, 100% | 2,138,806 | 115,226,802 |
| Average Household Size | 2.79, see rank | 2.64 | 2.61 |
| 1 Person Households | 99, 18.47%, see rank | 27.12% | 27.45% |
| 2 or More Person Households | 437, 81.53%, see rank | 72.88% | 72.55% |
| Family Households (Families) | 417, 77.80%, see rank | 66.97% | 66.47% |
| Average Family Size | 3.26, see rank | 3.32 | 3.29 |
| Married-Couple Family | 321, 59.89%, see rank | 48.03% | 48.97% |
| Nonfamily Households | 119, 22.20%, see rank | 33.03% | 33.53% |
US Census 2000 data
Total population: 1,349
| 21521 Zip Code | Maryland | U.S. | |
| Total Households | 544, 100% | 1,980,859 | 105,480,101 |
| Average Household Size | 2.48, see rank | 2.61 | 2.59 |
| 1 Person Households | 128, 23.53%, see rank | 25.01% | 25.82% |
| 2 or More Person Households | 416, 76.47%, see rank | 74.99% | 74.18% |
| Family Households (Families) | 400, 73.53%, see rank | 68.62% | 68.06% |
| Average Family Size | 2.91, see rank | 3.13 | 3.14 |
| Married-Couple Family | 326, 59.93%, see rank | 50.21% | 51.66% |
| Nonfamily Households | 144, 26.47%, 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.