State profile · MT
Montana ZIP Codes
Demographics, income, and housing across every ZIP code in Montana, benchmarked against all 50 states, DC and Puerto Rico.
- 361
- ZIP codes
- 990,003
- Population
- $70,018
- Avg ZIP income
- 56
- Counties
The verdict
Texas leads ZIP coverage at 1,935 ZCTAs (#1 of 52). That is not the income board: New Jersey's unweighted average ZIP household income is $121,992 (#1 of 52) on 595 ZCTAs.
- Texas
- ZIP-count #1 (1,935)
- New Jersey
- income #1 ($121,992)
- #39
- of 52 by ZIP count
- #39
- of 52 by avg income
ZIP-count and income are separate boards among 52 reporting states and territories. Income is the unweighted mean of each ZIP's ACS 2019–2023 median household income, so a rural code counts the same as a dense metro.
Mid-to-lower income with a contained ZIP set (361 codes · 56 counties). Average household income $70,018 and home value $326,475 should be read next to the largest city page, not as a national peer of mosaic states. Use the county RankBars to pick two markets, then compare ZIPs inside those counties.
The largest city, Billings (128,125), holds a moderate share (~13%) of state ZIP population. Expect a primary metro plus a long tail of mid-size markets: the top-cities chart and county RankBars both matter, and a two-ZIP compare inside vs outside Billings usually beats reading the state average alone.
Compact ZIP geography: the state page is closer to a directory than a mega-atlas. Prefer the largest city page and its primary ZIP over scanning every county, and keep the FAQ answers as the quick census totals.
Largest cities in Montana
Top 10 cities by population in Montana
Total resident population aggregated from every ZIP code the Census assigns to each city.
- Billings
Billings, MT
128,125 residents
- Missoula
Missoula, MT
90,987 residents
- Great Falls
Great Falls, MT
72,079 residents
- Bozeman
Bozeman, MT
58,934 residents
- Helena
Helena, MT
53,568 residents
- Kalispell 49,693
Kalispell, MT
49,693 residents
- Butte 33,499
Butte, MT
33,499 residents
- Belgrade 18,182
Belgrade, MT
18,182 residents
- Columbia Falls 13,499
Columbia Falls, MT
13,499 residents
- Hamilton 13,052
Hamilton, MT
13,052 residents
What this shows Billings leads, but several peers sit close enough that this top-10 chart is a shortlist, not a single-city story – compare two of those metros before trusting the state mean.
Counties in Montana
Which cities have the most ZIPs in Montana?
Side-by-side: Compare 59901 vs 59102 →
ZIP Codes in Montana
More MT ZIP codes
Official Data Resources for Montana
Compact ZIP geography: start at Census ACS for Montana, then BLS wages for the labor-market side of the same small map.
Frequently Asked Questions
Is Montana compact enough to browse ZIP by ZIP?
Yes – 361 codes and 56 counties put Montana in compact geography. Prefer the largest city page and its primary ZIP; the roll-ups here are quick census totals, not a substitute for opening one urban and one thin-edge code.
Why is Montana's average ZIP income a weak relocation signal by itself?
At $70,018, the state mean blends unlike county labor markets (homes average $326,475). Cost-of-living questions belong at county and ZIP scale: start from the most populous counties, then drop to a thin-edge ZIP to see whether the mean is a real center or a blend.
Which Montana cities should I open first?
Start with Billings (128,125, ~13% of ZIP population), then one mid-size market from the largest-cities chart. A two-ZIP compare inside vs outside Billings usually beats reading the state average alone. Other large markets include Missoula, Great Falls, Bozeman.
Take this with you
What to do with Montana's numbers, next.
- See how Montana compares to a neighboring state on the same Census fields Compare states
- Check where Montana's ZIP codes rank nationally on income, education, or homeownership View national rankings
- Save a ZIP code to your shortlist to track alongside others you're considering View your shortlist
Figures describe 2019–2023 ACS 5-Year Estimates aggregated from ZIP Code Tabulation Areas (ZCTAs), Census Bureau approximations of USPS ZIP codes, not any single address.
Source: U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2019–2023); USPS ZIP Code Tabulation Areas via the HUD USPS Crosswalk.
Read our methodology to see how this data is sourced, computed, and verified.