| Index | Somonauk | Illinois | National |
| Median home price | $155,300 | $174,800 | $184,700 |
| Median rent asked | $879 | $925 | $949 |
| Avg. people per household | 2.6 | 2.6 | 2.6 |
| Owner occupied households | 73.5% | 66.0% | 63.6% |
| Renter occupied households | 26.5% | 34.0% | 36.4% |
| Index | Somonauk | Illinois | National |
| Zillow home value index | n/a | $168,800 | $196,500 |
| Year over year appreciation rate | n/a | 5.76% | 6.79% |
| 5 year average appreciation rate | n/a | 3.66% | 5.28% |
| 10 year average appreciation rate | n/a | -1.85% | 0.01% |
| City, State | Population | Home Price | National Avg. |
| Earlville, IL | 1,672 | $106,800 | 42% |
| Lee, IL | 358 | $107,100 | 42% |
| Plano, IL | 11,929 | $124,500 | 33% |
| Sheridan, IL | 2,543 | $141,500 | 23% |
| Leland, IL | 844 | $146,000 | 21% |
| Somonauk, IL | 2,106 | $155,300 | 16% |
| City, State | Population | Home Price | National Avg. |
| New Eagle, PA | 2,106 | $85,400 | 54% |
| New Athens, IL | 2,106 | $106,700 | 42% |
| Boulevard Gardens, FL | 2,105 | $123,800 | 33% |
| Sigourney, IA | 2,105 | $80,000 | 57% |
| Leechburg, PA | 2,105 | $78,900 | 57% |
| Somonauk, IL | 2,106 | $155,300 | 16% |