USA.com / South Dakota / Westport, SD / 57481 / Population and Races / Historical Household and Family Data
57481 Zip Code Historical Household and Family Data
ACS 2010-2014 data
Total population: 571
| 57481 Zip Code | South Dakota | U.S. | |
| Total Households | 132, 100% | 327,101 | 116,211,092 |
| Average Household Size | 2.37, see rank | 2.45 | 2.63 |
| 1 Person Households | 34, 25.76%, see rank | 29.47% | 27.57% |
| 2 or More Person Households | 98, 74.24%, see rank | 70.53% | 72.43% |
| Family Households (Families) | 88, 66.67%, see rank | 64.44% | 66.22% |
| Average Family Size | 2.95, see rank | 3.11 | 3.32 |
| Married-Couple Family | 83, 62.88%, see rank | 50.30% | 48.42% |
| Nonfamily Households | 44, 33.33%, see rank | 35.56% | 33.78% |
US Census 2010 data
Total population: 598
| 57481 Zip Code | South Dakota | U.S. | |
| Total Households | 167, 100% | 322,282 | 116,716,292 |
| Average Household Size | 2.70, see rank | 2.42 | 2.58 |
| 1 Person Households | 33, 19.76%, see rank | 29.36% | 26.74% |
| 2 or More Person Households | 134, 80.24%, see rank | 70.64% | 73.26% |
| Family Households (Families) | 130, 77.84%, see rank | 64.22% | 66.43% |
| Average Family Size | 3.12, see rank | 3.00 | 3.14 |
| Married-Couple Family | 117, 70.06%, see rank | 50.15% | 48.42% |
| Nonfamily Households | 37, 22.16%, see rank | 35.78% | 33.57% |
ACS 2008-2012 data
Total population: 532
| 57481 Zip Code | South Dakota | U.S. | |
| Total Households | 136, 100% | 320,467 | 115,226,802 |
| Average Household Size | 3.00, see rank | 2.44 | 2.61 |
| 1 Person Households | 21, 15.44%, see rank | 29.39% | 27.45% |
| 2 or More Person Households | 115, 84.56%, see rank | 70.61% | 72.55% |
| Family Households (Families) | 112, 82.35%, see rank | 64.82% | 66.47% |
| Average Family Size | 3.41, see rank | 3.10 | 3.29 |
| Married-Couple Family | 105, 77.21%, see rank | 50.99% | 48.97% |
| Nonfamily Households | 24, 17.65%, see rank | 35.18% | 33.53% |
US Census 2000 data
Total population: 663
| 57481 Zip Code | South Dakota | U.S. | |
| Total Households | 208, 100% | 290,245 | 105,480,101 |
| Average Household Size | 3.19, see rank | 2.50 | 2.59 |
| 1 Person Households | 22, 10.58%, see rank | 27.58% | 25.82% |
| 2 or More Person Households | 186, 89.42%, see rank | 72.42% | 74.18% |
| Family Households (Families) | 182, 87.50%, see rank | 66.95% | 68.06% |
| Average Family Size | 3.45, see rank | 3.07 | 3.14 |
| Married-Couple Family | 167, 80.29%, see rank | 54.23% | 51.66% |
| Nonfamily Households | 26, 12.50%, 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.