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Saint Louis County Historical Household and Family Data
ACS 2010-2014 data
Total population: 1,000,423
| Saint Louis County | Missouri | U.S. | |
| Total Households | 402,629, 100% | 2,361,232 | 116,211,092 |
| Average Household Size | 2.44, see rank | 2.48 | 2.63 |
| 1 Person Households | 120,981, 30.05%, see rank | 29.09% | 27.57% |
| 2 or More Person Households | 281,648, 69.95%, see rank | 70.91% | 72.43% |
| Family Households (Families) | 261,998, 65.07%, see rank | 64.92% | 66.22% |
| Average Family Size | 3.11, see rank | 3.15 | 3.32 |
| Married-Couple Family | 189,022, 46.95%, see rank | 48.54% | 48.42% |
| Nonfamily Households | 140,631, 34.93%, see rank | 35.08% | 33.78% |
US Census 2010 data
Total population: 998,954
| Saint Louis County | Missouri | U.S. | |
| Total Households | 404,765, 100% | 2,375,611 | 116,716,292 |
| Average Household Size | 2.42, see rank | 2.45 | 2.58 |
| 1 Person Households | 119,346, 29.49%, see rank | 28.30% | 26.74% |
| 2 or More Person Households | 285,419, 70.51%, see rank | 71.70% | 73.26% |
| Family Households (Families) | 263,423, 65.08%, see rank | 65.34% | 66.43% |
| Average Family Size | 3.02, see rank | 3.00 | 3.14 |
| Married-Couple Family | 189,432, 46.80%, see rank | 48.45% | 48.42% |
| Nonfamily Households | 141,342, 34.92%, see rank | 34.66% | 33.57% |
ACS 2008-2012 data
Total population: 999,147
| Saint Louis County | Missouri | U.S. | |
| Total Households | 404,151, 100% | 2,358,270 | 115,226,802 |
| Average Household Size | 2.42, see rank | 2.46 | 2.61 |
| 1 Person Households | 120,655, 29.85%, see rank | 28.74% | 27.45% |
| 2 or More Person Households | 283,496, 70.15%, see rank | 71.26% | 72.55% |
| Family Households (Families) | 264,111, 65.35%, see rank | 65.45% | 66.47% |
| Average Family Size | 3.09, see rank | 3.11 | 3.29 |
| Married-Couple Family | 191,527, 47.39%, see rank | 49.16% | 48.97% |
| Nonfamily Households | 140,040, 34.65%, see rank | 34.55% | 33.53% |
ACS 2006-2010 data
Total population: 999,454
| Saint Louis County | Missouri | U.S. | |
| Total Households | 404,777, 100% | 2,349,955 | 114,235,996 |
| Average Household Size | 2.41, see rank | 2.45 | 2.59 |
| 1 Person Households | 121,099, 29.92%, see rank | 28.52% | 27.24% |
| 2 or More Person Households | 283,678, 70.08%, see rank | 71.48% | 72.76% |
| Family Households (Families) | 264,290, 65.29%, see rank | 65.81% | 66.75% |
| Average Family Size | 3.07, see rank | 3.08 | 3.25 |
| Married-Couple Family | 193,754, 47.87%, see rank | 49.87% | 49.60% |
| Nonfamily Households | 140,487, 34.71%, see rank | 34.19% | 33.25% |
ACS 2005-2009 data
Total population: 994,923
| Saint Louis County | Missouri | U.S. | |
| Total Households | 403,699, 100% | 2,322,238 | 112,611,029 |
| Average Household Size | 2.40, see rank | 2.47 | 2.60 |
| 1 Person Households | 119,042, 29.49%, see rank | 28.35% | 27.32% |
| 2 or More Person Households | 284,657, 70.51%, see rank | 71.65% | 72.68% |
| Family Households (Families) | 264,697, 65.57%, see rank | 65.96% | 66.67% |
| Average Family Size | 3.05, see rank | 3.11 | 3.27 |
| Married-Couple Family | 194,769, 48.25%, see rank | 49.97% | 49.71% |
| Nonfamily Households | 139,002, 34.43%, see rank | 34.04% | 33.33% |
US Census 2000 data
Total population: 1,016,315
| Saint Louis County | Missouri | U.S. | |
| Total Households | 404,312, 100% | 2,194,594 | 105,480,101 |
| Average Household Size | 2.47, see rank | 2.48 | 2.59 |
| 1 Person Households | 113,172, 27.99%, see rank | 27.33% | 25.82% |
| 2 or More Person Households | 291,140, 72.01%, see rank | 72.67% | 74.18% |
| Family Households (Families) | 270,810, 66.98%, see rank | 67.28% | 68.06% |
| Average Family Size | 3.05, see rank | 3.02 | 3.14 |
| Married-Couple Family | 206,240, 51.01%, see rank | 51.99% | 51.66% |
| Nonfamily Households | 133,502, 33.02%, see rank | 32.72% | 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.