| Index | Mason City | Illinois | National |
| Cost of living | 85 | 98 | 100 |
| Groceries | 101 | 100 | 100 |
| Health care | 99 | 100 | 100 |
| Housing | 50 | 95 | 100 |
| Transportation | 103 | 101 | 100 |
| Utilities | 99 | 99 | 100 |
| Lifestyle & Entertainment | 98 | 100 | 100 |
| Household Items | 98 | 100 | 100 |
| Education & Childcare | 97 | 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 | $95,126 | $7,927 | $2,219 | $2,854 |
| Renters | $40,229 | $3,352 | $939 | $1,207 |
| 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. |
| Topeka, IL | 63 | 82 | 18.0% |
| Greenview, IL | 943 | 82 | 17.6% |
| Middletown, IL | 216 | 83 | 17.4% |
| New Holland, IL | 267 | 84 | 16.4% |
| San Jose, IL | 551 | 84 | 15.7% |
| Mason City, IL | 2,414 | 85 | 15.2% |
| City | Population | Cost of Living Index | National Avg. |
| Fairfield Bay, AR | 2,414 | 88 | 11.8% |
| West Branch, IA | 2,414 | 95 | 5.4% |
| Stevenson, AL | 2,413 | 82 | 17.9% |
| Lamoni, IA | 2,412 | 83 | 16.8% |
| Grissom AFB, IN | 2,416 | 84 | 16.3% |
| Mason City, IL | 2,414 | 85 | 15.2% |