USA.com / Maryland / Montgomery County / Gaithersburg, MD / 20877 / Population and Races / Historical Household and Family Data
20877 Zip Code Historical Household and Family Data
ACS 2010-2014 data
Total population: 36,816
| 20877 Zip Code | Maryland | U.S. | |
| Total Households | 11,984, 100% | 2,155,983 | 116,211,092 |
| Average Household Size | 3.04, see rank | 2.67 | 2.63 |
| 1 Person Households | 3,042, 25.38%, see rank | 26.95% | 27.57% |
| 2 or More Person Households | 8,942, 74.62%, see rank | 73.05% | 72.43% |
| Family Households (Families) | 8,257, 68.90%, see rank | 67.07% | 66.22% |
| Average Family Size | 3.78, see rank | 3.35 | 3.32 |
| Married-Couple Family | 5,731, 47.82%, see rank | 47.68% | 48.42% |
| Nonfamily Households | 3,727, 31.10%, see rank | 32.93% | 33.78% |
US Census 2010 data
Total population: 34,321
| 20877 Zip Code | Maryland | U.S. | |
| Total Households | 11,498, 100% | 2,156,411 | 116,716,292 |
| Average Household Size | 2.95, see rank | 2.61 | 2.58 |
| 1 Person Households | 2,889, 25.13%, see rank | 26.11% | 26.74% |
| 2 or More Person Households | 8,609, 74.87%, see rank | 73.89% | 73.26% |
| Family Households (Families) | 7,763, 67.52%, see rank | 67.10% | 66.43% |
| Average Family Size | 3.43, see rank | 3.15 | 3.14 |
| Married-Couple Family | 5,249, 45.65%, see rank | 47.61% | 48.42% |
| Nonfamily Households | 3,735, 32.48%, see rank | 32.90% | 33.57% |
ACS 2008-2012 data
Total population: 33,519
| 20877 Zip Code | Maryland | U.S. | |
| Total Households | 11,647, 100% | 2,138,806 | 115,226,802 |
| Average Household Size | 2.84, see rank | 2.64 | 2.61 |
| 1 Person Households | 2,993, 25.70%, see rank | 27.12% | 27.45% |
| 2 or More Person Households | 8,654, 74.30%, see rank | 72.88% | 72.55% |
| Family Households (Families) | 7,710, 66.20%, see rank | 66.97% | 66.47% |
| Average Family Size | 3.62, see rank | 3.32 | 3.29 |
| Married-Couple Family | 5,350, 45.93%, see rank | 48.03% | 48.97% |
| Nonfamily Households | 3,937, 33.80%, see rank | 33.03% | 33.53% |
US Census 2000 data
Total population: 30,129
| 20877 Zip Code | Maryland | U.S. | |
| Total Households | 10,607, 100% | 1,980,859 | 105,480,101 |
| Average Household Size | 2.78, see rank | 2.61 | 2.59 |
| 1 Person Households | 2,957, 27.88%, see rank | 25.01% | 25.82% |
| 2 or More Person Households | 7,650, 72.12%, see rank | 74.99% | 74.18% |
| Family Households (Families) | 6,878, 64.84%, see rank | 68.62% | 68.06% |
| Average Family Size | 3.39, see rank | 3.13 | 3.14 |
| Married-Couple Family | 4,990, 47.04%, see rank | 50.21% | 51.66% |
| Nonfamily Households | 3,729, 35.16%, 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.