| Index | North Spearfish | South Dakota | National |
| Cost of living | 102 | 92 | 100 |
| Groceries | 100 | 99 | 100 |
| Health care | 98 | 97 | 100 |
| Housing | 110 | 77 | 100 |
| Transportation | 98 | 96 | 100 |
| Utilities | 102 | 103 | 100 |
| Lifestyle & Entertainment | 96 | 94 | 100 |
| Household Items | 97 | 96 | 100 |
| Education & Childcare | 98 | 98 | 100 |

| Cost of living index | |
| Groceries index | |
| Health care index | |
| Housing index | |
| Transportation index | |
| Utilities index | |
| Lifestyle index | |
| Household index | |
| Educare index |
| Median Income | Per Year | Per Month | Max Budget (28% DTI) | Max Budget (36% DTI) |
| Owners | $104,116 | $8,676 | $2,429 | $3,124 |
| Renters | $68,721 | $5,727 | $1,603 | $2,062 |
| State | General Sales Tax | With Max Surtax |
| South Dakota | 4.5% | 6% |
| State | Income Tax (Low) | Income Tax (High) |
| South Dakota | 0% | 0% |
| City | Population | Cost of Living Index | National Avg. |
| St. Onge, SD | 26 | 99 | 1.3% |
| Beulah, WY | 0 | 99 | 1.3% |
| Central City, SD | 163 | 87 | 12.6% |
| Whitewood, SD | 1,014 | 90 | 10.3% |
| Fruitdale, SD | 101 | 90 | 9.8% |
| North Spearfish, SD | 2,322 | 102 | 2.1% |
| City | Population | Cost of Living Index | National Avg. |
| Westbrook Center, CT | 2,322 | 127 | 27.4% |
| Newton, TX | 2,321 | 84 | 16.5% |
| Terrace Park, OH | 2,320 | 142 | 41.8% |
| Whitehall, NY | 2,324 | 95 | 4.6% |
| Ahwahnee, CA | 2,319 | 127 | 27.4% |
| North Spearfish, SD | 2,322 | 102 | 2.1% |