Quick answer
Idaho has lower average 1BR rent ($1,380/mo vs $2,097/mo). State income tax: Idaho (5.8%) vs California (Up to 13.3%) — on a $120K salary that's $9,000/year difference.
State Comparison · 2026
California vs Idaho
Side-by-side on state income tax, rent, home prices, climate, and top metros — with specific dollar numbers for every claim.
Last updated: April 23, 2026
California vs Idaho at a Glance
| Metric | California | Idaho |
|---|---|---|
| Avg 1BR rent (major metros) | $2,097 | $1,380 ✓ |
| Avg median home price | $764K | $445K ✓ |
| Cheapest city | Fresno ($1,400) | Boise ($1,380) ✓ |
| Priciest city | San Francisco ($2,800) | Boise ($1,380) |
| State income tax | Up to 13.3% | 5.8% ✓ |
| Avg walkability | 66/100 ✓ | 42/100 |
| Cities tracked | 7 | 1 |
✓ marks the lower or more favorable value. Averages use the major metros we track in each state.
State Income Tax: Real Savings
What the rate gap actually looks like in your paycheck. Lower rate: Idaho (5.8%).
Salary $80K
$6,000
/year saved in Idaho
Salary $120K
$9,000
/year saved in Idaho
Salary $200K
$15,000
/year saved in Idaho
Calculation uses the effective state rate difference × gross salary. Doesn't include property tax, sales tax, or federal impact.
Deep Dive: Each State
California (CA)
Tax reality
California has the highest state income tax in the US — 9.3% on earners around $100K and 13.3% on income over $1M. Combined with federal tax, a $200K W-2 earner keeps roughly $130K. The good news: no tax on Roth withdrawals in retirement and Prop 13 caps property-tax assessment increases at 2% annually for existing homeowners.
Top cities (7 tracked)
Top drawbacks
- ✕Housing is the single biggest trade-off. Bay Area median home prices run $1.1-1.7M, LA median is $980K, San Diego $900K. Even on $250K household income, buying a median home requires either 10 years of saving or help with the down payment.
- ✕State income tax is the highest in the US. A $150K earner pays roughly 9.3% effective state tax (~$14,000/year). Combined with federal + FICA, total effective tax hits 35-38% of gross.
- ✕Wildfire smoke is now an annual event. Summer/fall months regularly see AQI 150-300 for days at a time, especially in Sacramento, Bay Area, and southern CA mountain-adjacent areas. Indoor air filtration is basically required.
Idaho (ID)
Tax reality
Idaho has a 5.8% flat state income tax (moderate). Property tax is low (~0.6% effective). Sales tax 6%. No estate tax. Overall moderate tax burden.
Top cities (1 tracked)
Top drawbacks
- ✕Housing growth has outpaced wage growth. Long-time Idaho residents have been priced out of Boise proper.
- ✕Summer wildfire smoke affects air quality regularly — July through September can have multiple weeks of AQI 150-200+.
- ✕Idaho is deeply conservative politically, with some policy shifts (abortion, LGBTQ+, religion in schools) recently tightening. Boise specifically leans moderate; the rest of the state is more conservative.
Frequently Asked Questions
Is California or Idaho cheaper to live in?
Idaho has lower average 1BR rent across major metros — $1,380/mo vs $2,097/mo in California, a $717/mo difference. Home prices: Idaho median is $445K vs $764K.
California vs Idaho: which has lower state income tax?
Idaho has lower state income tax (5.8%) vs Up to 13.3% in California. On an $80K salary that's $6,000/year in savings. On $200K, savings grow to $15,000/year.
Should I move from California to Idaho?
California has the highest state income tax in the US — 9.3% on earners around $100K and 13.3% on income over $1M. Combined with federal tax, a $200K W-2 earner keeps roughly $130K. The good news: no tax on Roth withdrawals in retirement and Prop 13 caps property-tax assessment increases at 2% annually for existing homeowners.
What are the best cities in California vs Idaho?
California's largest metros include Los Angeles, San Francisco, San Diego. Idaho's largest metros include Boise. Cost of living varies significantly within each state — a California suburb can be 40% cheaper than its flagship city, and vice versa.