Property tax · Idaho
Property tax in Idaho
Property tax (County assessors) data for ZIP codes in Idaho. Pick a ZIP below to dive into the property tax summary.
Last verified 2026-07-03 · methodology
What lands here
Pages show the county millage rate, assessment methodology, homestead and senior exemptions, and a link to the assessor's portal for address-specific searches.
Source & refresh
County assessors. Refreshed annual reassessment per county. Primary source →
Idaho top concern
Radon Zone 1, wildfire, agricultural water
Idaho is uniformly EPA Zone 1 radon. Wildfire risk concentrates in central + northern panhandle forests. Agricultural water systems in the Snake River plain face nitrate + phosphate compliance pressure under EPA SDWIS.
See Idaho state page for the full state-level rollup across all 12 dimensions.
Read more on property tax
Editorial deep-dives explaining the source data, its limits, and how to read it.
Lead and Copper Rule 2024 — the federal lead-pipe inventory mandate
The 2024 Lead and Copper Rule Revisions (LCRR) require every US community water system to inventory and report lead service lines. Plain-English guide.
Property tax millage — what 'mill' means and how your bill is computed
Plain-English guide to property tax millage rates, assessment ratios, and homestead exemptions. How county assessors compute your annual property tax bill.
How to Find Your School District by Address (and Confirm the Boundary)
Find which school district any address belongs to, confirm the exact boundary, and see why one street can split between two districts. A plain how-to.
Deed records — what they show and what they don't
Plain-English guide to county deed records: what gets filed, how to look up a property's history, and why zipradar aggregates only counts (never owner names).