USA.com / South Dakota / Pennington County / Keystone, SD / 57751 / Population and Races / Historical Household and Family Data
57751 Zip Code Historical Household and Family Data
ACS 2010-2014 data
Total population: 697
| 57751 Zip Code | South Dakota | U.S. | |
| Total Households | 296, 100% | 327,101 | 116,211,092 |
| Average Household Size | 2.29, see rank | 2.45 | 2.63 |
| 1 Person Households | 80, 27.03%, see rank | 29.47% | 27.57% |
| 2 or More Person Households | 216, 72.97%, see rank | 70.53% | 72.43% |
| Family Households (Families) | 170, 57.43%, see rank | 64.44% | 66.22% |
| Average Family Size | 2.82, see rank | 3.11 | 3.32 |
| Married-Couple Family | 150, 50.68%, see rank | 50.30% | 48.42% |
| Nonfamily Households | 126, 42.57%, see rank | 35.56% | 33.78% |
US Census 2010 data
Total population: 844
| 57751 Zip Code | South Dakota | U.S. | |
| Total Households | 375, 100% | 322,282 | 116,716,292 |
| Average Household Size | 2.24, see rank | 2.42 | 2.58 |
| 1 Person Households | 99, 26.40%, see rank | 29.36% | 26.74% |
| 2 or More Person Households | 276, 73.60%, see rank | 70.64% | 73.26% |
| Family Households (Families) | 242, 64.53%, see rank | 64.22% | 66.43% |
| Average Family Size | 2.67, see rank | 3.00 | 3.14 |
| Married-Couple Family | 207, 55.20%, see rank | 50.15% | 48.42% |
| Nonfamily Households | 133, 35.47%, see rank | 35.78% | 33.57% |
ACS 2008-2012 data
Total population: 893
| 57751 Zip Code | South Dakota | U.S. | |
| Total Households | 371, 100% | 320,467 | 115,226,802 |
| Average Household Size | 2.35, see rank | 2.44 | 2.61 |
| 1 Person Households | 109, 29.38%, see rank | 29.39% | 27.45% |
| 2 or More Person Households | 262, 70.62%, see rank | 70.61% | 72.55% |
| Family Households (Families) | 226, 60.92%, see rank | 64.82% | 66.47% |
| Average Family Size | 2.96, see rank | 3.10 | 3.29 |
| Married-Couple Family | 207, 55.80%, see rank | 50.99% | 48.97% |
| Nonfamily Households | 145, 39.08%, see rank | 35.18% | 33.53% |
US Census 2000 data
Total population: 714
| 57751 Zip Code | South Dakota | U.S. | |
| Total Households | 288, 100% | 290,245 | 105,480,101 |
| Average Household Size | 2.28, see rank | 2.50 | 2.59 |
| 1 Person Households | 82, 28.47%, see rank | 27.58% | 25.82% |
| 2 or More Person Households | 206, 71.53%, see rank | 72.42% | 74.18% |
| Family Households (Families) | 182, 63.19%, see rank | 66.95% | 68.06% |
| Average Family Size | 2.77, see rank | 3.07 | 3.14 |
| Married-Couple Family | 142, 49.31%, see rank | 54.23% | 51.66% |
| Nonfamily Households | 106, 36.81%, see rank | 33.05% | 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.