| Index | Round Lake Heights | Illinois | National |
| Cost of living | 101 | 98 | 100 |
| Groceries | 100 | 100 | 100 |
| Health care | 101 | 100 | 100 |
| Housing | 106 | 95 | 100 |
| Transportation | 98 | 101 | 100 |
| Utilities | 99 | 99 | 100 |
| Lifestyle & Entertainment | 97 | 100 | 100 |
| Household Items | 100 | 100 | 100 |
| Education & Childcare | 98 | 100 | 100 |

| Cost of living index | |
| Groceries index | |
| Health care index | |
| Housing index | |
| Transportation index | |
| Utilities index | |
| Lifestyle index | |
| Household index | |
| Educare index |
| Median Income | Per Year | Per Month | Max Budget (28% DTI) | Max Budget (36% DTI) |
| Owners | $123,065 | $10,255 | $2,871 | $3,692 |
| Renters | $87,530 | $7,294 | $2,042 | $2,626 |
| State | General Sales Tax | With Max Surtax |
| Illinois | 6.25% | 10.25% |
| State | Income Tax (Low) | Income Tax (High) |
| Illinois | 4.95% | 4.95% |
| City | Population | Cost of Living Index | National Avg. |
| Park City, IL | 7,894 | 82 | 18.2% |
| Lake Ivanhoe, WI | 408 | 94 | 5.7% |
| North Chicago, IL | 30,865 | 95 | 5.0% |
| Round Lake Park, IL | 8,005 | 95 | 5.3% |
| Waukegan, IL | 90,063 | 96 | 4.1% |
| Round Lake Heights, IL | 3,083 | 101 | 1.0% |
| City | Population | Cost of Living Index | National Avg. |
| Hahira, GA | 3,083 | 94 | 6.2% |
| Park Hills, KY | 3,083 | 97 | 2.9% |
| Eatonville, WA | 3,082 | 118 | 17.7% |
| Granite Quarry, NC | 3,084 | 95 | 4.6% |
| Richville, OH | 3,084 | 91 | 9.3% |
| Round Lake Heights, IL | 3,083 | 101 | 1.0% |