| Index | Marengo | Illinois | National |
| Median home price | $149,900 | $174,800 | $184,700 |
| Median rent asked | $856 | $925 | $949 |
| Avg. people per household | 2.7 | 2.6 | 2.6 |
| Owner occupied households | 68.3% | 66.0% | 63.6% |
| Renter occupied households | 31.7% | 34.0% | 36.4% |
| Index | Marengo | Illinois | National |
| Zillow home value index | $179,800 | $168,800 | $196,500 |
| Year over year appreciation rate | 4.72% | 5.76% | 6.79% |
| 5 year average appreciation rate | 2.89% | 3.66% | 5.28% |
| 10 year average appreciation rate | -2.69% | -1.85% | 0.01% |
| City, State | Population | Home Price | National Avg. |
| Belvidere, IL | 25,300 | $103,300 | 44% |
| Capron, IL | 1,868 | $105,900 | 43% |
| Garden Prairie, IL | 183 | $109,500 | 41% |
| Harvard, IL | 9,589 | $114,400 | 38% |
| Candlewick Lake, IL | 4,646 | $123,700 | 33% |
| Marengo, IL | 8,081 | $149,900 | 19% |
| City, State | Population | Home Price | National Avg. |
| Union, SC | 8,081 | $77,600 | 58% |
| Ashland, WI | 8,083 | $107,800 | 42% |
| Warrenton, MO | 8,077 | $123,500 | 33% |
| Whitehouse, TX | 8,069 | $153,600 | 17% |
| Yelm, WA | 8,066 | $202,500 | 10% |
| Marengo, IL | 8,081 | $149,900 | 19% |