USA.com / Maryland / Kent County / Rock Hall, MD / 21661 / Population and Races / Historical Household and Family Data
21661 Zip Code Historical Household and Family Data
ACS 2010-2014 data
Total population: 2,723
| 21661 Zip Code | Maryland | U.S. | |
| Total Households | 1,116, 100% | 2,155,983 | 116,211,092 |
| Average Household Size | 2.42, see rank | 2.67 | 2.63 |
| 1 Person Households | 395, 35.39%, see rank | 26.95% | 27.57% |
| 2 or More Person Households | 721, 64.61%, see rank | 73.05% | 72.43% |
| Family Households (Families) | 656, 58.78%, see rank | 67.07% | 66.22% |
| Average Family Size | 3.29, see rank | 3.35 | 3.32 |
| Married-Couple Family | 504, 45.16%, see rank | 47.68% | 48.42% |
| Nonfamily Households | 460, 41.22%, see rank | 32.93% | 33.78% |
US Census 2010 data
Total population: 2,653
| 21661 Zip Code | Maryland | U.S. | |
| Total Households | 1,226, 100% | 2,156,411 | 116,716,292 |
| Average Household Size | 2.15, see rank | 2.61 | 2.58 |
| 1 Person Households | 392, 31.97%, see rank | 26.11% | 26.74% |
| 2 or More Person Households | 834, 68.03%, see rank | 73.89% | 73.26% |
| Family Households (Families) | 773, 63.05%, see rank | 67.10% | 66.43% |
| Average Family Size | 2.65, see rank | 3.15 | 3.14 |
| Married-Couple Family | 584, 47.63%, see rank | 47.61% | 48.42% |
| Nonfamily Households | 453, 36.95%, see rank | 32.90% | 33.57% |
ACS 2008-2012 data
Total population: 2,708
| 21661 Zip Code | Maryland | U.S. | |
| Total Households | 1,155, 100% | 2,138,806 | 115,226,802 |
| Average Household Size | 2.34, see rank | 2.64 | 2.61 |
| 1 Person Households | 413, 35.76%, see rank | 27.12% | 27.45% |
| 2 or More Person Households | 742, 64.24%, see rank | 72.88% | 72.55% |
| Family Households (Families) | 711, 61.56%, see rank | 66.97% | 66.47% |
| Average Family Size | 3.11, see rank | 3.32 | 3.29 |
| Married-Couple Family | 552, 47.79%, see rank | 48.03% | 48.97% |
| Nonfamily Households | 444, 38.44%, see rank | 33.03% | 33.53% |
US Census 2000 data
Total population: 2,841
| 21661 Zip Code | Maryland | U.S. | |
| Total Households | 1,279, 100% | 1,980,859 | 105,480,101 |
| Average Household Size | 2.22, see rank | 2.61 | 2.59 |
| 1 Person Households | 374, 29.24%, see rank | 25.01% | 25.82% |
| 2 or More Person Households | 905, 70.76%, see rank | 74.99% | 74.18% |
| Family Households (Families) | 845, 66.07%, see rank | 68.62% | 68.06% |
| Average Family Size | 2.72, see rank | 3.13 | 3.14 |
| Married-Couple Family | 650, 50.82%, see rank | 50.21% | 51.66% |
| Nonfamily Households | 434, 33.93%, 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.