NookLocal data
Adams County Common Level Ratio
The 2025 Common Level Ratio for Adams County is 67.6%, and the CLR factor is 1.48. The State Tax Equalization Board certified it for use from 2026-07-01 to 2027-06-30. Assessments in Adams County average 67.6% of market value, the 13th highest ratio of Pennsylvania's 67 counties.
| County | CLR (assessed ÷ market) | CLR factor | In effect |
|---|---|---|---|
| Adams | 67.6% | 1.48 | 2026-07-01 to 2027-06-30 |
What the ratio means in Adams County
Multiply a price by the ratio and you get what a home's assessment "should" be at typical Adams County ratios: a $400,000 home works out to an assessment around $270,280. If the actual assessment sits far below that, a sale can invite a school-district assessment appeal that raises the bill; far above, and the owner may be over-paying and have a case to appeal down.
The factor runs the same math in reverse. Multiply an assessed value by 1.48 to estimate market value: a $150,000 assessment in Adams County suggests a market value around $222,000. The factor is also what the state uses to compute realty transfer tax on non-arm's-length transfers, where the price on the deed doesn't reflect an arm's-length market value.
See the full 67-county CLR table to compare counties, or the property tax calculator, which uses these ratios for purchase estimates.
Adams County CLR questions
What is the Common Level Ratio in Adams County?
The 2025 STEB-certified Common Level Ratio for Adams County is 67.6%, and the CLR factor is 1.48. It applies from 2026-07-01 to 2027-06-30.
How do I estimate market value from an assessment?
Multiply the assessed value by the CLR factor. In Adams County, a $150,000 assessment times 1.48 suggests a market value around $222,000.
When does the CLR change?
STEB certifies a new ratio for every county each year, and it takes effect on July 1. The current Adams County ratio applies 2026-07-01 to 2027-06-30.
Where is the CLR used?
Two main places: assessment appeals, where the ratio converts a market value into what the assessment should be, and realty transfer tax on non-arm's-length transfers, where the factor converts an assessed value into a taxable value.
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Source: PA Department of Community & Economic Development, State Tax Equalization Board. Last verified 2026-07-04. Ratios change every July. This page tracks the current Adams County ratio.