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21704 Zip Code Historical Household and Family Data
ACS 2010-2014 data
Total population: 14,820
| 21704 Zip Code | Maryland | U.S. | |
| Total Households | 4,895, 100% | 2,155,983 | 116,211,092 |
| Average Household Size | 2.95, see rank | 2.67 | 2.63 |
| 1 Person Households | 809, 16.53%, see rank | 26.95% | 27.57% |
| 2 or More Person Households | 4,086, 83.47%, see rank | 73.05% | 72.43% |
| Family Households (Families) | 3,920, 80.08%, see rank | 67.07% | 66.22% |
| Average Family Size | 3.39, see rank | 3.35 | 3.32 |
| Married-Couple Family | 3,227, 65.92%, see rank | 47.68% | 48.42% |
| Nonfamily Households | 975, 19.92%, see rank | 32.93% | 33.78% |
US Census 2010 data
Total population: 13,321
| 21704 Zip Code | Maryland | U.S. | |
| Total Households | 4,224, 100% | 2,156,411 | 116,716,292 |
| Average Household Size | 3.05, see rank | 2.61 | 2.58 |
| 1 Person Households | 616, 14.58%, see rank | 26.11% | 26.74% |
| 2 or More Person Households | 3,608, 85.42%, see rank | 73.89% | 73.26% |
| Family Households (Families) | 3,442, 81.49%, see rank | 67.10% | 66.43% |
| Average Family Size | 3.40, see rank | 3.15 | 3.14 |
| Married-Couple Family | 2,943, 69.67%, see rank | 47.61% | 48.42% |
| Nonfamily Households | 782, 18.51%, see rank | 32.90% | 33.57% |
ACS 2008-2012 data
Total population: 13,407
| 21704 Zip Code | Maryland | U.S. | |
| Total Households | 4,460, 100% | 2,138,806 | 115,226,802 |
| Average Household Size | 2.91, see rank | 2.64 | 2.61 |
| 1 Person Households | 743, 16.66%, see rank | 27.12% | 27.45% |
| 2 or More Person Households | 3,717, 83.34%, see rank | 72.88% | 72.55% |
| Family Households (Families) | 3,481, 78.05%, see rank | 66.97% | 66.47% |
| Average Family Size | 3.38, see rank | 3.32 | 3.29 |
| Married-Couple Family | 2,932, 65.74%, see rank | 48.03% | 48.97% |
| Nonfamily Households | 979, 21.95%, see rank | 33.03% | 33.53% |
US Census 2000 data
Total population: 4,169
| 21704 Zip Code | Maryland | U.S. | |
| Total Households | 1,387, 100% | 1,980,859 | 105,480,101 |
| Average Household Size | 2.72, see rank | 2.61 | 2.59 |
| 1 Person Households | 219, 15.79%, see rank | 25.01% | 25.82% |
| 2 or More Person Households | 1,168, 84.21%, see rank | 74.99% | 74.18% |
| Family Households (Families) | 1,120, 80.75%, see rank | 68.62% | 68.06% |
| Average Family Size | 3.01, see rank | 3.13 | 3.14 |
| Married-Couple Family | 942, 67.92%, see rank | 50.21% | 51.66% |
| Nonfamily Households | 267, 19.25%, 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.