Monthly estimate = 1BR rent + electricity + gas
A one-person monthly baseline (1BR rent plus typical utilities) runs $1,040 in Billings, MT versus $970 in Idaho Falls, ID. Overall, Idaho Falls, ID is roughly 7% cheaper to live in day-to-day than Billings, MT, driven mainly by rent.
Median household income is $71,855 in Billings, MT and $69,630 in Idaho Falls, ID — about 3% higher in Billings, MT. Montana has a top state income tax rate of 5.65% and no state sales tax; Idaho has a top state income tax rate of 5.30% and a 6% state sales tax.
Rent
Buying a Home
Income
People & Lifestyle
Crime (per 100k/yr)
FBI Crime Data Explorer. Offenses per 100,000 residents per year; agency reporting practices vary, so this is approximate.
Climate
Gas
Area: Rocky Mountain (PADD 4) vs Rocky Mountain (PADD 4).
Utilities
Residential, state-level averages (EIA). MCF = 1,000 cubic feet.
Groceries
Average prices — West vs West (BLS). Regional where available, otherwise U.S. average.
State Taxes
Billings vs Idaho Falls — FAQ
- Is it cheaper to live in Billings or Idaho Falls?
- Idaho Falls, ID is cheaper. Its monthly baseline of $970 (1BR rent + utilities) runs about 7% below Billings, MT's $1,040, mainly because of rent.
- How much more do you need to earn to live in Billings than in Idaho Falls?
- To keep rent near the recommended 30% of gross income, you'd want to earn roughly $36,000 a year in Billings versus $33,000 in Idaho Falls.
- Which has lower taxes, Billings or Idaho Falls?
- Billings is taxed under Montana's rules (a top state income tax rate of 5.65% and no state sales tax); Idaho Falls under Idaho's (a top state income tax rate of 5.30% and a 6% state sales tax).
Sources: US Census Bureau, ACS 5-Year (rent, income, home value, demographics); NOAA Climate Normals 1981–2010 (climate); EIA weekly retail (gas); Tax Foundation 2026 (state taxes).