| Index | Karnak | Illinois | National |
| Median home price | $100,848 | $308,565 | $326,622 |
| Median rent asked | $969 | $1,374 | $1,444 |
| Avg. people per household | 2.5 | 2.6 | 2.6 |
| Owner occupied households | 74.6% | 66.0% | 63.6% |
| Renter occupied households | 25.4% | 34.0% | 36.4% |

| Population | Home Price | National Avg. | |
| Bandana, KY | 311 | $0 | 100% |
| Mounds, IL | 947 | $39,903 | 88% |
| Mound City, IL | 803 | $55,358 | 83% |
| Joppa, IL | 271 | $66,596 | 80% |
| Pulaski, IL | 266 | $77,133 | 76% |
| Karnak, IL | 490 | $100,848 | 69% |
| Population | Home Price | National Avg. | |
| Spring Bay, IL | 490 | $197,074 | 40% |
| Buckholts, TX | 490 | $94,896 | 71% |
| Forman, ND | 490 | $202,205 | 38% |
| Sargent, NE | 490 | $91,652 | 72% |
| Forestville, WI | 490 | $228,202 | 30% |
| Karnak, IL | 490 | $100,848 | 69% |