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Keystone, SD Historical Marital Status Data
ACS 2010-2014 data
Total population: 365
| Keystone, SD | % | South Dakota | U.S. | |
| 15 Years and Over Total | 311 | see rank | 662,290 | 252,974,135 |
| Males, 15 Years and Over | 147 | 100%, see rank | 330,772 | 123,281,364 |
| Never Married | 45 | 30.61%, see rank | 33.60% | 35.77% |
| Married | 62 | 42.18%, see rank | 53.49% | 52.04% |
| Widowed | 2 | 1.36%, see rank | 2.60% | 2.57% |
| Divorced | 38 | 25.85%, see rank | 10.32% | 9.62% |
| Females, 15 Years and Over | 164 | 100%, see rank | 331,518 | 129,692,771 |
| Never Married | 83 | 50.61%, see rank | 26.41% | 29.48% |
| Married | 59 | 35.98%, see rank | 53.01% | 49.19% |
| Widowed | 10 | 6.10%, see rank | 9.58% | 9.16% |
| Divorced | 12 | 7.32%, see rank | 10.99% | 12.16% |
ACS 2008-2012 data
Total population: 397
| Keystone, SD | % | South Dakota | U.S. | |
| 15 Years and Over Total | 332 | see rank | 648,109 | 248,042,237 |
| Males, 15 Years and Over | 149 | 100%, see rank | 322,699 | 120,789,875 |
| Never Married | 35 | 23.49%, see rank | 32.66% | 35.08% |
| Married | 79 | 53.02%, see rank | 54.45% | 52.93% |
| Widowed | 7 | 4.70%, see rank | 2.62% | 2.53% |
| Divorced | 28 | 18.79%, see rank | 10.28% | 9.46% |
| Females, 15 Years and Over | 183 | 100%, see rank | 325,410 | 127,252,362 |
| Never Married | 79 | 43.17%, see rank | 25.80% | 28.74% |
| Married | 80 | 43.72%, see rank | 53.39% | 49.95% |
| Widowed | 4 | 2.19%, see rank | 10.04% | 9.34% |
| Divorced | 20 | 10.93%, see rank | 10.78% | 11.97% |
ACS 2006-2010 data
Total population: 328
| Keystone, SD | % | South Dakota | U.S. | |
| 15 Years and Over Total | 252 | see rank | 634,715 | 243,073,468 |
| Males, 15 Years and Over | 120 | 100%, see rank | 315,298 | 118,264,295 |
| Never Married | 17 | 14.17%, see rank | 31.98% | 34.21% |
| Married | 78 | 65.00%, see rank | 55.60% | 54.02% |
| Widowed | 7 | 5.83%, see rank | 2.59% | 2.52% |
| Divorced | 18 | 15.00%, see rank | 9.83% | 9.25% |
| Females, 15 Years and Over | 132 | 100%, see rank | 319,417 | 124,809,173 |
| Never Married | 34 | 25.76%, see rank | 25.07% | 27.93% |
| Married | 74 | 56.06%, see rank | 54.20% | 50.85% |
| Widowed | 1 | 0.76%, see rank | 10.20% | 9.55% |
| Divorced | 23 | 17.42%, see rank | 10.53% | 11.66% |
ACS 2005-2009 data
Total population: 362
| Keystone, SD | % | South Dakota | U.S. | |
| 15 Years and Over Total | 272 | see rank | 634,602 | 240,146,935 |
| Males, 15 Years and Over | 125 | 100%, see rank | 314,539 | 117,166,601 |
| Never Married | 24 | 19.20%, see rank | 32.28% | 34.13% |
| Married | 87 | 69.60%, see rank | 55.43% | 54.15% |
| Widowed | 8 | 6.40%, see rank | 2.56% | 2.53% |
| Divorced | 6 | 4.80%, see rank | 9.73% | 9.19% |
| Females, 15 Years and Over | 147 | 100%, see rank | 320,063 | 122,980,334 |
| Never Married | 26 | 17.69%, see rank | 25.10% | 27.67% |
| Married | 95 | 64.63%, see rank | 53.83% | 50.88% |
| Widowed | 6 | 4.08%, see rank | 10.67% | 9.85% |
| Divorced | 20 | 13.61%, see rank | 10.39% | 11.60% |
US Census 2000 data
Total population: 311
| Keystone, SD | % | South Dakota | U.S. | |
| 15 Years and Over Total | 244 | see rank | 589,612 | 221,148,671 |
| Males, 15 Years and Over | 109 | 100%, see rank | 289,858 | 107,027,405 |
| Never Married | 28 | 25.69%, see rank | 29.83% | 30.26% |
| Married | 53 | 48.62%, see rank | 59.24% | 58.58% |
| Widowed | 5 | 4.59%, see rank | 2.43% | 2.52% |
| Divorced | 23 | 21.10%, see rank | 8.50% | 8.65% |
| Females, 15 Years and Over | 135 | 100%, see rank | 299,754 | 114,121,266 |
| Never Married | 30 | 22.22%, see rank | 22.54% | 24.13% |
| Married | 58 | 42.96%, see rank | 57.03% | 54.60% |
| Widowed | 17 | 12.59%, see rank | 11.38% | 10.49% |
| Divorced | 30 | 22.22%, see rank | 9.05% | 10.78% |
* 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.