Quick answer
Idaho has lower average 1BR rent ($1,380/mo vs $1,550/mo). State income tax: Connecticut (6.99% (top)) vs Idaho (5.8%) — on a $120K salary that's $360/year difference.
State Comparison · 2026
Connecticut 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
Connecticut vs Idaho at a Glance
| Metric | Connecticut | Idaho |
|---|---|---|
| Avg 1BR rent (major metros) | $1,550 | $1,380 ✓ |
| Avg median home price | $260K ✓ | $445K |
| Cheapest city | Hartford ($1,550) | Boise ($1,380) ✓ |
| Priciest city | Hartford ($1,550) | Boise ($1,380) |
| State income tax | 6.99% (top) ✓ | 5.8% |
| Avg walkability | 63/100 ✓ | 42/100 |
| Cities tracked | 1 | 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: Connecticut (6.99% (top)).
Salary $80K
$240
/year saved in Connecticut
Salary $120K
$360
/year saved in Connecticut
Salary $200K
$600
/year saved in Connecticut
Calculation uses the effective state rate difference × gross salary. Doesn't include property tax, sales tax, or federal impact.
Deep Dive: Each State
Connecticut (CT)
Tax reality
State income tax tops at 6.99%. Combined with municipal property taxes averaging 2.0–2.5% and some of the nation's highest electric rates (Eversource generates $12/month per kWh vs $8 national average), annual tax burden on $400k income exceeds $40k.
Top cities (1 tracked)
Top drawbacks
- ✕Property taxes 2.0–2.5% in most towns. A $600k home costs $12,000–15,000 annually in property tax.
- ✕Eversource electric rates are highest in continental US at 12¢/kWh. Monthly bills for a 2,000 sq ft home run $180–220.
- ✕State income tax 6.99% (top bracket). No local tax deductions after 2017 SALT cap of $10,000.
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 Connecticut or Idaho cheaper to live in?
Idaho has lower average 1BR rent across major metros — $1,380/mo vs $1,550/mo in Connecticut, a $170/mo difference. Home prices: Connecticut median is $260K vs $445K.
Connecticut vs Idaho: which has lower state income tax?
Connecticut has lower state income tax (6.99% (top)) vs 5.8% in Idaho. On an $80K salary that's $240/year in savings. On $200K, savings grow to $600/year.
Should I move from Connecticut to Idaho?
State income tax tops at 6.99%. Combined with municipal property taxes averaging 2.0–2.5% and some of the nation's highest electric rates (Eversource generates $12/month per kWh vs $8 national average), annual tax burden on $400k income exceeds $40k.
What are the best cities in Connecticut vs Idaho?
Connecticut's largest metros include Hartford. Idaho's largest metros include Boise. Cost of living varies significantly within each state — a Connecticut suburb can be 40% cheaper than its flagship city, and vice versa.