| Index | Sullivan's Island | South Carolina | National |
| Cost of living | 312 | 94 | 100 |
| Groceries | 97 | 99 | 100 |
| Health care | 100 | 98 | 100 |
| Housing | 811 | 81 | 100 |
| Transportation | 102 | 99 | 100 |
| Utilities | 101 | 101 | 100 |
| Lifestyle & Entertainment | 96 | 98 | 100 |
| Household Items | 101 | 99 | 100 |
| Education & Childcare | 93 | 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 | $228,706 | $19,059 | $5,336 | $6,862 |
| Renters | $147,750 | $12,313 | $3,447 | $4,433 |
| State | General Sales Tax | With Max Surtax |
| South Carolina | 6% | 9% |
| State | Income Tax (Low) | Income Tax (High) |
| South Carolina | 0% | 6.5% |
| City | Population | Cost of Living Index | National Avg. |
| North Charleston, SC | 117,218 | 102 | 1.9% |
| Hanahan, SC | 26,450 | 110 | 9.6% |
| Charleston, SC | 142,427 | 123 | 22.8% |
| James Island, SC | 12,534 | 125 | 25.4% |
| Mount Pleasant, SC | 91,527 | 140 | 40.4% |
| Sullivan's Island, SC | 2,226 | 312 | 212.2% |
| City | Population | Cost of Living Index | National Avg. |
| Lake Hamilton, AR | 2,226 | 108 | 7.9% |
| Imperial, NE | 2,226 | 92 | 8.0% |
| Glasco, NY | 2,226 | 118 | 17.5% |
| Cave Junction, OR | 2,226 | 103 | 3.3% |
| Manchester, MI | 2,225 | 94 | 6.4% |
| Sullivan's Island, SC | 2,226 | 312 | 212.2% |