| Index | Old Mill Creek | Illinois | National |
| Median home price | $1,054,618 | $308,565 | $326,622 |
| Median rent asked | $1,802 | $1,374 | $1,444 |
| Avg. people per household | 2.2 | 2.6 | 2.6 |
| Owner occupied households | 21.3% | 66.0% | 63.6% |
| Renter occupied households | 78.8% | 34.0% | 36.4% |

| Population | Home Price | National Avg. | |
| Park City, IL | 7,894 | $40,687 | 88% |
| North Chicago, IL | 30,865 | $190,433 | 42% |
| Round Lake Park, IL | 8,005 | $218,272 | 33% |
| Zion, IL | 24,329 | $241,763 | 26% |
| Waukegan, IL | 90,063 | $251,387 | 23% |
| Old Mill Creek, IL | 205 | $1,054,618 | 223% |
| Population | Home Price | National Avg. | |
| Quantico, MD | 205 | $621,833 | 90% |
| Carleton, NE | 205 | $139,904 | 57% |
| Lake Bronson, MN | 205 | $69,354 | 79% |
| Pleasant Plains, AR | 205 | $143,445 | 56% |
| Jacksonport, AR | 205 | $62,600 | 81% |
| Old Mill Creek, IL | 205 | $1,054,618 | 223% |