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Moving from Montana to Illinois

A side-by-side comparison drawn from BLS, BEA, Census, FBI, and NOAA. Big sky, no sales tax, rapidly gentrifying small towns. vs. Chicago global city, second-highest property taxes in US.

MT state flag
Living now

Montana

Capital: Helena

Median household income $67,631 · winter low 14°F · 205 sunny days

Big sky, no sales tax, rapidly gentrifying small towns.

IL state flag
Moving to

Illinois

Capital: Springfield

Median household income $78,433 · winter low 19°F · 189 sunny days

Chicago global city, second-highest property taxes in US.

Illinois has an overall price level 100.0 (US avg = 100). Housing dominates the difference.

Overall price index
Montana
94.6
Illinois
100.0
Illinois has 5.6% higher overall price level
Housing index
Montana
84.6
Illinois
93.9
Illinois has 11% higher housing costs
Groceries index (modeled)
Montana
98.7
Illinois
100.0
Illinois has 1.3% higher groceries
Utilities index (modeled)
Montana
99.2
Illinois
100.0
Illinois has 0.8% higher utilities
Electricity rate
Montana
13.5 ¢/kWh
Illinois
18.9 ¢/kWh
Illinois has 40% higher electricity
Transportation index (modeled)
Montana
98.9
Illinois
100.0
Illinois has 1.1% higher transportation
Median home value
Montana
$425,400
Illinois
$280,700
Illinois is 34% cheaper to buy a home
Median monthly rent
Montana
$933/mo
Illinois
$1,169/mo
Illinois is 25% more expensive to rent

Sources: NOAA Climate Normals · EPA AirNow (live) state-level

Summer high 85°F · Winter low 19°F · 189 sunny days/yr.

Avg summer high
Montana
83°F
Illinois
85°F
Illinois is 2.4% more summer highs
Avg winter low
Montana
14°F
Illinois
19°F
Illinois is 36% more winter lows
Avg annual temperature
Montana
44°F
Illinois
52°F
Illinois is 19% more annual temperature
Sunny days / year
Montana
205
Illinois
189
Illinois has 7.8% lower sunny days
Annual precipitation
Montana
15 in
Illinois
40 in
Illinois is 163% more annual precipitation
Air quality (live AQI)
Montana
42
Illinois
40
Illinois has 4.8% lower AQI
Snow / year
Montana
51 in
Illinois
19 in
Illinois is 63% less annual snowfall

Get the full MontanaIllinois report

Schools, healthcare, taxes, transportation, lifestyle, crime, family fit, move logistics, AI assistant, and 90-day timeline.

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Frequently asked

Is it cheaper to live in Illinois than Montana?

Illinois's overall price level is roughly 99.4 (US avg = 100), vs about 95 for Montana — based on BEA Regional Price Parities. Housing is the dominant driver of the difference. Run a comparison for the full, current breakdown.

What's the income tax difference?

Montana tops out at 5.65% income tax. Illinois tops out at 4.95%.

How long do I have to register my vehicle in Illinois?

Most Illinois residents must register a vehicle within 30-60 days of moving. Check the piomover report for state-specific deadlines.

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