| Index | Rapid Valley | South Dakota | National |
| Cost of living | 97 | 92 | 100 |
| Groceries | 100 | 99 | 100 |
| Health care | 98 | 97 | 100 |
| Housing | 95 | 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 | $94,922 | $7,910 | $2,215 | $2,848 |
| Renters | $0 | $0 | $0 | $0 |
| 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. |
| Caputa, SD | 0 | 99 | 1.3% |
| New Underwood, SD | 779 | 90 | 10.2% |
| Keystone, SD | 561 | 90 | 9.6% |
| Ashland Heights, SD | 1,118 | 95 | 4.9% |
| Rapid City, SD | 79,549 | 99 | 1.0% |
| Rapid Valley, SD | 8,750 | 97 | 2.5% |
| City | Population | Cost of Living Index | National Avg. |
| Signal Mountain, TN | 8,749 | 125 | 24.9% |
| Conover, NC | 8,748 | 94 | 6.0% |
| Cumberland Hill, RI | 8,752 | 116 | 15.7% |
| Frostburg, MD | 8,747 | 89 | 11.2% |
| Sanger, TX | 8,747 | 100 | 0.1% |
| Rapid Valley, SD | 8,750 | 97 | 2.5% |