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