Ada County Property Taxes
Ada County, Idaho
Effective Tax Rate
0.00%
72.9% above state avgMedian Annual Tax
$0
$220/mo escrow
Estimate Your Tax
Annual Tax
$0
Monthly
$0
Eff. Rate
0.56%
At a Glance
Median Home Value
$476,000
State avg ▲ $311,932
Tax w/ Mortgage/yr
$2,607
$217/mo escrow
Tax w/o Mortgage/yr
$2,725
$227/mo
State Tax Rate Rank
#32
of 44 counties (1 = lowest)
Data Story
About Property Taxes in Ada County, Idaho
Ada County taxes above national average
Ada County's effective tax rate of 0.555% sits well above the national median of 0.49%, placing it in the higher half of counties nationwide. The median property tax of $2,643 nearly matches the national median of $2,690, despite Ada County's median home value of $476,000 being 69% higher than the national median of $281,900.
Higher than most Idaho counties
At 0.555%, Ada County's effective tax rate exceeds Idaho's state average of 0.508% by 9%, ranking it above average among the state's 44 counties. The median tax bill of $2,643 is 73% higher than Idaho's statewide median of $1,529, reflecting both higher rates and Ada County's elevated property values.
Ada's tax burden in regional context
Ada County's 0.555% rate falls between Bannock County (0.718%) to the southeast and Bear Lake County (0.453%) to the north, representing a middle ground in the region. Among similar population centers in Idaho, Ada's effective rate and median tax bill are notably higher, driven by both rate and the county's strong real estate market.
What Ada County homeowners pay yearly
On a median home valued at $476,000, Ada County homeowners pay approximately $2,643 annually in property taxes. Owners with mortgages pay slightly less ($2,607), while those owning outright face $2,725—a difference reflecting assessment practices and exemption variations.
Consider appealing your Ada assessment
Many Ada County homeowners pay more than they should due to inflated assessments. If your property tax bill seems high relative to recent sales in your neighborhood, filing an appeal with the county assessor's office is free and can result in significant savings.
How Ada County Compares
Median Annual Property Tax
Ada County
0.56%
Effective rate
Idaho Avg
0.49%
Effective rate
National Avg
0.91%
Effective rate
Frequently Asked Questions
What is the property tax rate in Ada County, Idaho?
How much are property taxes in Ada County?
How does Ada County compare to the Idaho average?
What is the median home value in Ada County, Idaho?
Why is Ada County property tax rate higher than the Idaho average?
How does Ada County rank for property taxes in Idaho?
Counties with Similar Tax Rates
Nearby Counties
Other Counties in Idaho
Data updated: March 2026
Data from U.S. Census Bureau, American Community Survey 2019-2023 5-Year Estimates. Effective tax rate is calculated as median property tax divided by median home value.