State comparison
Idaho vs Arizona: which state is better to live in?
Arizona costs a median household about $1,200 a year less in state and local taxes than Idaho, mostly because its income tax takes 2.5% of a median income against 5.0% in Idaho, though everyday prices run higher there (cost of living index 102 against 96).
Idaho
Moderate tax burden · COL index 96
Wins 12 categories
Arizona
Moderate tax burden · COL index 102
Wins 2 categories
Taxes: Idaho vs Arizona
Idaho has a flat 5.8% income tax, which works out to 5.0% on a median income of $74,580, or $3,698 a year. Arizona has a flat 2.5% income tax, which works out to 2.5% on a median income of $74,580, or $1,865 a year. Arizona wins on income tax at 2026 rates.
Property tax is 0.48% of home value a year in Idaho and 0.51% in Arizona (Tax Foundation, 2023); on each state's median home that is $2,040 against $2,142, so Idaho has the lower rate.
Combined state and local sales tax averages 6.02% in Idaho and 8.37% in Arizona; Idaho is lower.
Add it up for a household earning $74,580 (the 2022 national median) and owning the median home: $7,085 a year in Idaho, $5,879 in Arizona. Arizona is cheaper on total state and local tax.
Housing and cost of living
Idaho's cost of living index is 96 and Arizona's is 102, where 100 is the national average; Idaho is about 6% cheaper day to day.
The median home costs $425K in Idaho and $420K in Arizona (Zillow, 2024), a $5K gap in Arizona's favor. A two-bedroom rents for about $1,500 a month in Idaho and $1,600 in Arizona.
Home insurance averages $800 a year in Idaho and $1,850 in Arizona, so Idaho is cheaper to insure.
Safety
Violent crime runs 228 incidents per 100,000 residents in Idaho and 474 in Arizona (FBI Crime Data Explorer, 2023); Idaho is the safer state by that measure, with a rate 108% lower. Property crime is 1,535 per 100,000 in Idaho against 2,624 in Arizona, again favoring Idaho.
Health
Life expectancy is 77.7 years in Idaho and 76.3 in Arizona (County Health Rankings, 2024), a 1.4-year edge for Idaho. The Commonwealth Fund's 2023 scorecard ranks Idaho's health system 32nd of 50 and Arizona's 34th, so Idaho scores better on care.
9.0% of Idaho residents have no health insurance against 10.8% in Arizona, which favors Idaho. Both states expanded Medicaid.
Schools
Education Week's 2023 Quality Counts report ranks Idaho's K-12 schools 30th in the country and Arizona's 45th, 15 places apart in Idaho's favor. Arizona runs a school-choice voucher program; Idaho does not.
Laws and politics
In the 2024 presidential election Idaho went to Trump by 30 points and Arizona went to Trump by 5 points.
Idaho has permitless carry and a Giffords gun-law grade of F; Arizona has permitless carry and a grade of F.
Abortion is banned with narrow exceptions in both states, and marijuana is illegal in Idaho and legal for adults in Arizona as of 2026. The minimum wage is $7.25 an hour in Idaho and $14.35 in Arizona.
Climate and risk
Natural disaster risk is moderate in Idaho (wildfire, earthquake) and moderate in Arizona (wildfire, extreme-heat, drought). Annual average air quality index is 48 in Idaho and 46 in Arizona (under 50 is good), favoring Arizona.
Tax figures use a household earning the national median income and owning each state's median home, at tax year 2026 rates, last checked against state sources on 2026-09-14. The table below has every number.
Taxes
Housing & Cost of Living
Crime & Safety
Healthcare
Education
Childcare
Utilities & Daily Costs
Social Policy
Category wins
12
Idaho
2
Arizona
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Score For My Profile →Questions people ask
Is Idaho or Arizona better to live in?
Idaho wins more of the measures that decide a move. Arizona on taxes ($5,879 a year for a median household against $7,085); Idaho on everyday costs (index 96 against 102); Idaho on safety (228 violent crimes per 100,000 against 474); Idaho on schools (ranked 30th against 45th).
Which is cheaper, Idaho or Arizona?
Idaho is cheaper day to day: cost of living index 96 against 102. The median home is $425K in Idaho and $420K in Arizona (2024). On state and local taxes Arizona saves a median household about $1,200 a year.
Does Idaho or Arizona have lower taxes?
Arizona. A household earning $74,580 pays about $7,085 a year in Idaho ($3,698 income tax, $2,040 property tax on the median home and $1,347 in sales tax) and $5,879 in Arizona ($1,865 income tax, $2,142 property tax on the median home and $1,873 in sales tax), at 2026 rates.
Which is safer, Idaho or Arizona?
Idaho, on the FBI's 2023 figures. Violent crime is 228 per 100,000 residents in Idaho and 474 in Arizona; property crime is 1,535 against 2,624.
Which has better schools, Idaho or Arizona?
Idaho. Education Week's 2023 Quality Counts report ranks Idaho 30th of 50 for K-12 and Arizona 45th. Arizona also offers school-choice vouchers.
Is Idaho or Arizona better for retirees?
Both treat retirement income about the same. Idaho does not tax Social Security, partly exempts pensions and has no estate or inheritance tax; Arizona does not tax Social Security, partly exempts pensions and has no estate or inheritance tax. Property tax on a median home is $2,040 a year in Idaho and $2,142 in Arizona.