| Index | Castalian Springs | Tennessee | National |
| Median home price | $0 | $262,129 | $326,622 |
| Median rent asked | $0 | $1,162 | $1,444 |
| Avg. people per household | 2.2 | 2.5 | 2.6 |
| Owner occupied households | 84.6% | 66.3% | 63.6% |
| Renter occupied households | 15.4% | 33.7% | 36.4% |

| Population | Home Price | National Avg. | |
| Bransford, TN | 276 | $0 | 100% |
| Graball, TN | 107 | $0 | 100% |
| Hartsville (Trousdale County) , TN | 8,201 | $232,675 | 29% |
| Bethpage, TN | 494 | $264,824 | 19% |
| Portland, TN | 13,381 | $271,850 | 17% |
| Castalian Springs, TN | 405 | $0 | 100% |
| Population | Home Price | National Avg. | |
| Twin, AL | 405 | $137,995 | 58% |
| Bolivar, PA | 405 | $155,128 | 53% |
| Sunburst, MT | 405 | $192,513 | 41% |
| Pomfret, MD | 405 | $463,324 | 42% |
| Grimesland, NC | 405 | $142,781 | 56% |
| Castalian Springs, TN | 405 | $0 | 100% |