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21230 Zip Code Historical Household and Family Data
ACS 2010-2014 data
Total population: 34,441
| 21230 Zip Code | Maryland | U.S. | |
| Total Households | 14,675, 100% | 2,155,983 | 116,211,092 |
| Average Household Size | 2.34, see rank | 2.67 | 2.63 |
| 1 Person Households | 5,251, 35.78%, see rank | 26.95% | 27.57% |
| 2 or More Person Households | 9,424, 64.22%, see rank | 73.05% | 72.43% |
| Family Households (Families) | 7,191, 49.00%, see rank | 67.07% | 66.22% |
| Average Family Size | 3.21, see rank | 3.35 | 3.32 |
| Married-Couple Family | 4,340, 29.57%, see rank | 47.68% | 48.42% |
| Nonfamily Households | 7,484, 51.00%, see rank | 32.93% | 33.78% |
US Census 2010 data
Total population: 33,568
| 21230 Zip Code | Maryland | U.S. | |
| Total Households | 14,947, 100% | 2,156,411 | 116,716,292 |
| Average Household Size | 2.23, see rank | 2.61 | 2.58 |
| 1 Person Households | 5,200, 34.79%, see rank | 26.11% | 26.74% |
| 2 or More Person Households | 9,747, 65.21%, see rank | 73.89% | 73.26% |
| Family Households (Families) | 6,921, 46.30%, see rank | 67.10% | 66.43% |
| Average Family Size | 2.93, see rank | 3.15 | 3.14 |
| Married-Couple Family | 4,139, 27.69%, see rank | 47.61% | 48.42% |
| Nonfamily Households | 8,026, 53.70%, see rank | 32.90% | 33.57% |
ACS 2008-2012 data
Total population: 33,364
| 21230 Zip Code | Maryland | U.S. | |
| Total Households | 14,086, 100% | 2,138,806 | 115,226,802 |
| Average Household Size | 2.35, see rank | 2.64 | 2.61 |
| 1 Person Households | 5,221, 37.07%, see rank | 27.12% | 27.45% |
| 2 or More Person Households | 8,865, 62.93%, see rank | 72.88% | 72.55% |
| Family Households (Families) | 6,816, 48.39%, see rank | 66.97% | 66.47% |
| Average Family Size | 3.29, see rank | 3.32 | 3.29 |
| Married-Couple Family | 4,083, 28.99%, see rank | 48.03% | 48.97% |
| Nonfamily Households | 7,270, 51.61%, see rank | 33.03% | 33.53% |
US Census 2000 data
Total population: 33,098
| 21230 Zip Code | Maryland | U.S. | |
| Total Households | 13,932, 100% | 1,980,859 | 105,480,101 |
| Average Household Size | 2.33, see rank | 2.61 | 2.59 |
| 1 Person Households | 4,771, 34.24%, see rank | 25.01% | 25.82% |
| 2 or More Person Households | 9,161, 65.76%, see rank | 74.99% | 74.18% |
| Family Households (Families) | 7,527, 54.03%, see rank | 68.62% | 68.06% |
| Average Family Size | 3.03, see rank | 3.13 | 3.14 |
| Married-Couple Family | 4,260, 30.58%, see rank | 50.21% | 51.66% |
| Nonfamily Households | 6,405, 45.97%, 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.