| Index | Harper | Oregon | National |
| Cost of living | 93 | 111 | 100 |
| Groceries | 100 | 104 | 100 |
| Health care | 99 | 105 | 100 |
| Housing | 80 | 124 | 100 |
| Transportation | 99 | 106 | 100 |
| Utilities | 99 | 106 | 100 |
| Lifestyle & Entertainment | 98 | 107 | 100 |
| Household Items | 100 | 104 | 100 |
| Education & Childcare | 97 | 109 | 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 | $87,192 | $7,266 | $2,034 | $2,616 |
| Renters | $46,089 | $3,841 | $1,075 | $1,383 |
| State | General Sales Tax | With Max Surtax |
| Oregon | 0% | 0% |
| State | Income Tax (Low) | Income Tax (High) |
| Oregon | 4.75% | 9.9% |
| City | Population | Cost of Living Index | National Avg. |
| Harper, OR | 108 | 93 | 6.6% |
| City | Population | Cost of Living Index | National Avg. |
| Franklin CDP (Sacramento County), CA | 108 | 134 | 34.2% |
| Arion, IA | 108 | 74 | 26.3% |
| Carpenter, IA | 108 | 86 | 14.2% |
| Houghton, IA | 108 | 91 | 8.6% |
| St. Donatus, IA | 108 | 96 | 4.3% |
| Harper, OR | 108 | 93 | 6.6% |