Ada County Property Tax Rate — Idaho 2026
In Ada County, Idaho, homeowners pay a median annual property tax of $2,643 on a median home value of $476,000, resulting in an effective property tax rate of 0.56%. This rate is 0.02% higher than the Idaho state average (0.53%) and 0.35% lower than the national average (0.91%).
How Ada County Compares
Property taxes in Ada County are below the national average, suggesting a more affordable tax environment for homeowners in this area.
Property Tax Calculator for Ada County
Enter your home’s estimated market value to calculate your approximate annual property tax in Ada County, Idaho.
This estimate uses the effective tax rate of 0.56% based on ACS data. Actual taxes may differ based on local assessments, exemptions, and levies.
Housing Breakdown
Property Tax Details for Ada County, Idaho
The median property tax paid by homeowners in Ada County is $2,643 per year. Based on a median home value of $476,000, this translates to an effective property tax rate of 0.56%.
For context, the statewide median property tax in Idaho is $2,006 with an effective rate of 0.53%, while the national average effective rate stands at 0.91%. Ada County’s effective rate is 0.02% higher than the Idaho state average (0.53%).
Of the 196,700 housing units in Ada County, approximately 71.35% are owner-occupied and 28.65% are renter-occupied. Homeownership rates can influence local tax policy, as communities with higher ownership rates often see more voter engagement on property tax issues.
Important: The data on this page is for informational purposes only and should not be used as tax advice. Actual property taxes depend on your property’s assessed value, local millage rates, and any applicable exemptions. Contact your county assessor’s office for precise tax information.