USA.com / Maryland / Allegany County / Oldtown, MD / 21555 / Population and Races / Historical Household and Family Data
21555 Zip Code Historical Household and Family Data
ACS 2010-2014 data
Total population: 1,861
| 21555 Zip Code | Maryland | U.S. | |
| Total Households | 739, 100% | 2,155,983 | 116,211,092 |
| Average Household Size | 2.49, see rank | 2.67 | 2.63 |
| 1 Person Households | 169, 22.87%, see rank | 26.95% | 27.57% |
| 2 or More Person Households | 570, 77.13%, see rank | 73.05% | 72.43% |
| Family Households (Families) | 570, 77.13%, see rank | 67.07% | 66.22% |
| Average Family Size | 2.94, see rank | 3.35 | 3.32 |
| Married-Couple Family | 425, 57.51%, see rank | 47.68% | 48.42% |
| Nonfamily Households | 169, 22.87%, see rank | 32.93% | 33.78% |
US Census 2010 data
Total population: 1,936
| 21555 Zip Code | Maryland | U.S. | |
| Total Households | 776, 100% | 2,156,411 | 116,716,292 |
| Average Household Size | 2.49, see rank | 2.61 | 2.58 |
| 1 Person Households | 176, 22.68%, see rank | 26.11% | 26.74% |
| 2 or More Person Households | 600, 77.32%, see rank | 73.89% | 73.26% |
| Family Households (Families) | 567, 73.07%, see rank | 67.10% | 66.43% |
| Average Family Size | 2.87, see rank | 3.15 | 3.14 |
| Married-Couple Family | 465, 59.92%, see rank | 47.61% | 48.42% |
| Nonfamily Households | 209, 26.93%, see rank | 32.90% | 33.57% |
ACS 2008-2012 data
Total population: 1,590
| 21555 Zip Code | Maryland | U.S. | |
| Total Households | 586, 100% | 2,138,806 | 115,226,802 |
| Average Household Size | 2.64, see rank | 2.64 | 2.61 |
| 1 Person Households | 97, 16.55%, see rank | 27.12% | 27.45% |
| 2 or More Person Households | 489, 83.45%, see rank | 72.88% | 72.55% |
| Family Households (Families) | 489, 83.45%, see rank | 66.97% | 66.47% |
| Average Family Size | 2.96, see rank | 3.32 | 3.29 |
| Married-Couple Family | 372, 63.48%, see rank | 48.03% | 48.97% |
| Nonfamily Households | 97, 16.55%, see rank | 33.03% | 33.53% |
US Census 2000 data
Total population: 1,922
| 21555 Zip Code | Maryland | U.S. | |
| Total Households | 709, 100% | 1,980,859 | 105,480,101 |
| Average Household Size | 2.60, see rank | 2.61 | 2.59 |
| 1 Person Households | 136, 19.18%, see rank | 25.01% | 25.82% |
| 2 or More Person Households | 573, 80.82%, see rank | 74.99% | 74.18% |
| Family Households (Families) | 543, 76.59%, see rank | 68.62% | 68.06% |
| Average Family Size | 2.97, see rank | 3.13 | 3.14 |
| Married-Couple Family | 464, 65.44%, see rank | 50.21% | 51.66% |
| Nonfamily Households | 166, 23.41%, 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.