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20640 Zip Code Historical Household and Family Data
ACS 2010-2014 data
Total population: 10,579
| 20640 Zip Code | Maryland | U.S. | |
| Total Households | 3,706, 100% | 2,155,983 | 116,211,092 |
| Average Household Size | 2.82, see rank | 2.67 | 2.63 |
| 1 Person Households | 862, 23.26%, see rank | 26.95% | 27.57% |
| 2 or More Person Households | 2,844, 76.74%, see rank | 73.05% | 72.43% |
| Family Households (Families) | 2,651, 71.53%, see rank | 67.07% | 66.22% |
| Average Family Size | 3.46, see rank | 3.35 | 3.32 |
| Married-Couple Family | 1,682, 45.39%, see rank | 47.68% | 48.42% |
| Nonfamily Households | 1,055, 28.47%, see rank | 32.93% | 33.78% |
US Census 2010 data
Total population: 10,438
| 20640 Zip Code | Maryland | U.S. | |
| Total Households | 3,683, 100% | 2,156,411 | 116,716,292 |
| Average Household Size | 2.79, see rank | 2.61 | 2.58 |
| 1 Person Households | 817, 22.18%, see rank | 26.11% | 26.74% |
| 2 or More Person Households | 2,866, 77.82%, see rank | 73.89% | 73.26% |
| Family Households (Families) | 2,678, 72.71%, see rank | 67.10% | 66.43% |
| Average Family Size | 3.25, see rank | 3.15 | 3.14 |
| Married-Couple Family | 1,775, 48.19%, see rank | 47.61% | 48.42% |
| Nonfamily Households | 1,005, 27.29%, see rank | 32.90% | 33.57% |
ACS 2008-2012 data
Total population: 9,945
| 20640 Zip Code | Maryland | U.S. | |
| Total Households | 3,426, 100% | 2,138,806 | 115,226,802 |
| Average Household Size | 2.88, see rank | 2.64 | 2.61 |
| 1 Person Households | 772, 22.53%, see rank | 27.12% | 27.45% |
| 2 or More Person Households | 2,654, 77.47%, see rank | 72.88% | 72.55% |
| Family Households (Families) | 2,504, 73.09%, see rank | 66.97% | 66.47% |
| Average Family Size | 3.50, see rank | 3.32 | 3.29 |
| Married-Couple Family | 1,608, 46.94%, see rank | 48.03% | 48.97% |
| Nonfamily Households | 922, 26.91%, see rank | 33.03% | 33.53% |
US Census 2000 data
Total population: 8,273
| 20640 Zip Code | Maryland | U.S. | |
| Total Households | 3,055, 100% | 1,980,859 | 105,480,101 |
| Average Household Size | 2.70, see rank | 2.61 | 2.59 |
| 1 Person Households | 704, 23.04%, see rank | 25.01% | 25.82% |
| 2 or More Person Households | 2,351, 76.96%, see rank | 74.99% | 74.18% |
| Family Households (Families) | 2,190, 71.69%, see rank | 68.62% | 68.06% |
| Average Family Size | 3.18, see rank | 3.13 | 3.14 |
| Married-Couple Family | 1,495, 48.94%, see rank | 50.21% | 51.66% |
| Nonfamily Households | 865, 28.31%, 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.