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Montgomery County Historical Household and Family Data
ACS 2010-2014 data
Total population: 1,005,087
| Montgomery County | Maryland | U.S. | |
| Total Households | 362,608, 100% | 2,155,983 | 116,211,092 |
| Average Household Size | 2.75, see rank | 2.67 | 2.63 |
| 1 Person Households | 91,421, 25.21%, see rank | 26.95% | 27.57% |
| 2 or More Person Households | 271,187, 74.79%, see rank | 73.05% | 72.43% |
| Family Households (Families) | 250,726, 69.15%, see rank | 67.07% | 66.22% |
| Average Family Size | 3.40, see rank | 3.35 | 3.32 |
| Married-Couple Family | 193,813, 53.45%, see rank | 47.68% | 48.42% |
| Nonfamily Households | 111,882, 30.85%, see rank | 32.93% | 33.78% |
US Census 2010 data
Total population: 971,777
| Montgomery County | Maryland | U.S. | |
| Total Households | 357,086, 100% | 2,156,411 | 116,716,292 |
| Average Household Size | 2.70, see rank | 2.61 | 2.58 |
| 1 Person Households | 89,264, 25.00%, see rank | 26.11% | 26.74% |
| 2 or More Person Households | 267,822, 75.00%, see rank | 73.89% | 73.26% |
| Family Households (Families) | 244,898, 68.58%, see rank | 67.10% | 66.43% |
| Average Family Size | 3.22, see rank | 3.15 | 3.14 |
| Married-Couple Family | 190,571, 53.37%, see rank | 47.61% | 48.42% |
| Nonfamily Households | 112,188, 31.42%, see rank | 32.90% | 33.57% |
ACS 2008-2012 data
Total population: 974,824
| Montgomery County | Maryland | U.S. | |
| Total Households | 357,579, 100% | 2,138,806 | 115,226,802 |
| Average Household Size | 2.70, see rank | 2.64 | 2.61 |
| 1 Person Households | 92,197, 25.78%, see rank | 27.12% | 27.45% |
| 2 or More Person Households | 265,382, 74.22%, see rank | 72.88% | 72.55% |
| Family Households (Families) | 244,586, 68.40%, see rank | 66.97% | 66.47% |
| Average Family Size | 3.36, see rank | 3.32 | 3.29 |
| Married-Couple Family | 190,711, 53.33%, see rank | 48.03% | 48.97% |
| Nonfamily Households | 112,993, 31.60%, see rank | 33.03% | 33.53% |
ACS 2006-2010 data
Total population: 947,230
| Montgomery County | Maryland | U.S. | |
| Total Households | 353,177, 100% | 2,121,047 | 114,235,996 |
| Average Household Size | 2.66, see rank | 2.62 | 2.59 |
| 1 Person Households | 89,001, 25.20%, see rank | 26.92% | 27.24% |
| 2 or More Person Households | 264,176, 74.80%, see rank | 73.08% | 72.76% |
| Family Households (Families) | 242,950, 68.79%, see rank | 67.11% | 66.75% |
| Average Family Size | 3.29, see rank | 3.28 | 3.25 |
| Married-Couple Family | 190,790, 54.02%, see rank | 48.59% | 49.60% |
| Nonfamily Households | 110,227, 31.21%, see rank | 32.89% | 33.25% |
ACS 2005-2009 data
Total population: 946,172
| Montgomery County | Maryland | U.S. | |
| Total Households | 344,099, 100% | 2,092,538 | 112,611,029 |
| Average Household Size | 2.72, see rank | 2.63 | 2.60 |
| 1 Person Households | 87,724, 25.49%, see rank | 27.08% | 27.32% |
| 2 or More Person Households | 256,375, 74.51%, see rank | 72.92% | 72.68% |
| Family Households (Families) | 236,519, 68.74%, see rank | 66.92% | 66.67% |
| Average Family Size | 3.38, see rank | 3.30 | 3.27 |
| Married-Couple Family | 187,418, 54.47%, see rank | 48.74% | 49.71% |
| Nonfamily Households | 107,580, 31.26%, see rank | 33.08% | 33.33% |
US Census 2000 data
Total population: 873,341
| Montgomery County | Maryland | U.S. | |
| Total Households | 324,565, 100% | 1,980,859 | 105,480,101 |
| Average Household Size | 2.66, see rank | 2.61 | 2.59 |
| 1 Person Households | 79,299, 24.43%, see rank | 25.01% | 25.82% |
| 2 or More Person Households | 245,266, 75.57%, see rank | 74.99% | 74.18% |
| Family Households (Families) | 224,225, 69.08%, see rank | 68.62% | 68.06% |
| Average Family Size | 3.19, see rank | 3.13 | 3.14 |
| Married-Couple Family | 179,192, 55.21%, see rank | 50.21% | 51.66% |
| Nonfamily Households | 100,340, 30.92%, 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.