| Index | Seneca | Illinois | National |
| Median home price | $169,200 | $174,800 | $184,700 |
| Median rent asked | $794 | $925 | $949 |
| Avg. people per household | 2.7 | 2.6 | 2.6 |
| Owner occupied households | 83.8% | 66.0% | 63.6% |
| Renter occupied households | 16.2% | 34.0% | 36.4% |
| Population | Home Price | National Avg. | |
| Streator, IL | 12,337 | $72,400 | 61% |
| Kangley, IL | 244 | $87,500 | 53% |
| Ransom, IL | 355 | $91,200 | 51% |
| Verona, IL | 259 | $96,100 | 48% |
| Naplate, IL | 442 | $100,400 | 46% |
| Seneca, IL | 2,534 | $169,200 | 8% |
| Population | Home Price | National Avg. | |
| Drum Point, MD | 2,534 | $287,700 | 56% |
| Walnut Hill, TN | 2,534 | $150,400 | 19% |
| New Miami, OH | 2,534 | $72,300 | 61% |
| Brookville, IN | 2,535 | $118,100 | 36% |
| Combine, TX | 2,535 | $171,900 | 7% |
| Seneca, IL | 2,534 | $169,200 | 8% |
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