States › Montana
State
Montana
56 counties or equivalents, 380 places and 345 ZIP Codes with PLACES estimates; 1,132,812 residents.
- Counties
- Largest places
- State figures are site aggregates: population-weighted county estimates, no interval
Montana has 56 counties or equivalents, 380 places and 345 ZIP Code Tabulation Areas with PLACES estimates, covering 1,132,812 residents (897,161 adults).
PLACES does not publish state totals. The state figures here are population-weighted county estimates computed by this site, following CDC's published method for aggregating areas, and carry no interval. For the 2025 release that gives obesity at 31.4% (site aggregate) (age-adjusted 31.6%), below the national interval around 32.8%; county estimates range from 23.0% to 41.1%.
Diagnosed diabetes is 9.9% (site aggregate) by the same method (national 12.0%) and 9.3% (site aggregate) of adults aged 18–64 are estimated to lack health insurance (national 11.0%).
Report card: 40 measures by CDC category
Crude prevalence is the estimated share of all adults. Age-adjusted prevalence is standardised to the 2000 US standard population so that areas with different age structures can be compared. CDC: "Age-adjusted estimates are only available at the county and place-level."
estimate with 95% intervalUS estimate
Health outcomes (12)vs the US interval: 6 above · 4 below · 2 within
Prevention (7)vs the US interval: 0 above · 7 below · 0 within
Health risk behaviors (4)vs the US interval: 2 above · 2 below · 0 within
Disability (7)vs the US interval: 3 above · 3 below · 1 within
Health status (3)vs the US interval: 2 above · 1 below · 0 within
Health-related social needs (7)vs the US interval: 0 above · 6 below · 1 within
State figures are population-weighted county estimates computed by this site and carry no interval, so the dot is a point and the US flag says whether the state figure falls above, below or within CDC's national 95% interval. Each measure links to its national and state tables.
Counties in Montana
Ordered by point estimate; intervals overlap for most neighbouring rows, so the order is not a ranking. The flag says whether each row's interval lies above, below or in line with the Montana figure, which is a population-weighted county estimate computed by this site and carries no interval.
| Counties | Population | Estimate | 95% interval | vs the Montana figure |
|---|---|---|---|---|
| Blaine County | 6,899 | 41.1% | 34.4–47.9 | above |
| Roosevelt County | 10,319 | 41.0% | 33.9–49.0 | above |
| Glacier County | 13,609 | 39.7% | 33.3–45.9 | above |
| Rosebud County | 8,160 | 39.5% | 33.4–45.9 | above |
| Phillips County | 4,249 | 38.8% | 31.5–46.9 | above |
| Hill County | 16,276 | 38.5% | 32.5–44.9 | above |
| Richland County | 11,173 | 37.9% | 31.5–44.5 | above |
| Lincoln County | 21,895 | 37.8% | 31.4–44.5 | in line |
| Pondera County | 6,125 | 37.2% | 30.4–44.7 | in line |
| Mineral County | 5,090 | 36.0% | 28.5–44.0 | in line |
| Powell County | 7,133 | 35.8% | 28.8–43.6 | in line |
| Chouteau County | 5,847 | 35.6% | 28.2–43.3 | in line |
| Musselshell County | 5,308 | 35.6% | 28.1–43.9 | in line |
| Toole County | 5,133 | 35.6% | 28.5–43.2 | in line |
| Big Horn County | 12,751 | 35.5% | 29.6–41.8 | in line |
| Sheridan County | 3,498 | 35.5% | 27.9–43.7 | in line |
| Cascade County | 84,900 | 35.3% | 31.0–39.8 | in line |
| Sanders County | 13,684 | 34.9% | 28.2–41.7 | in line |
| Liberty County | 1,974 | 34.0% | 26.0–43.1 | in line |
| Yellowstone County | 170,843 | 34.0% | 29.7–38.2 | in line |
| Daniels County | 1,633 | 33.5% | 25.7–42.1 | in line |
| Prairie County | 1,112 | 33.5% | 25.8–41.8 | in line |
| Treasure County | 772 | 33.2% | 25.3–42.0 | in line |
| Carbon County | 11,419 | 33.0% | 26.3–40.3 | in line |
| Lake County | 33,338 | 33.0% | 27.8–38.3 | in line |
| Carter County | 1,418 | 32.9% | 25.4–41.3 | in line |
| Petroleum County | 554 | 32.9% | 24.9–42.0 | in line |
| Dawson County | 8,810 | 32.8% | 26.2–39.9 | in line |
| Jefferson County | 13,048 | 32.8% | 26.5–39.6 | in line |
| Valley County | 7,474 | 32.7% | 26.5–39.5 | in line |
| Custer County | 11,985 | 32.6% | 26.4–39.4 | in line |
| Golden Valley County | 835 | 32.5% | 25.5–41.8 | in line |
| Wibaux County | 910 | 32.5% | 25.0–40.6 | in line |
| Deer Lodge County | 9,673 | 32.4% | 25.2–40.1 | in line |
| McCone County | 1,676 | 32.4% | 25.1–40.3 | in line |
| Meagher County | 2,071 | 32.3% | 24.7–40.8 | in line |
| Silver Bow County | 36,360 | 32.3% | 26.6–38.1 | in line |
| Wheatland County | 2,057 | 32.0% | 24.3–40.7 | in line |
| Ravalli County | 47,738 | 31.9% | 26.5–37.7 | in line |
| Judith Basin County | 2,093 | 31.5% | 24.0–39.6 | in line |
| Fallon County | 2,994 | 31.4% | 24.0–40.2 | in line |
| Fergus County | 11,772 | 31.2% | 25.6–38.3 | in line |
| Flathead County | 113,679 | 31.2% | 26.7–35.7 | in line |
| Lewis and Clark County | 75,011 | 31.0% | 26.3–35.8 | in line |
| Teton County | 6,430 | 30.9% | 24.0–38.3 | in line |
| Broadwater County | 8,032 | 30.7% | 23.6–38.4 | in line |
| Garfield County | 1,211 | 30.6% | 23.5–38.7 | in line |
| Granite County | 3,595 | 30.4% | 23.3–38.2 | in line |
| Park County | 17,903 | 30.4% | 24.4–36.8 | in line |
| Powder River County | 1,743 | 30.4% | 23.1–38.1 | in line |
| Stillwater County | 9,173 | 30.2% | 23.6–37.2 | in line |
| Sweet Grass County | 3,763 | 29.4% | 22.6–37.1 | in line |
| Madison County | 9,521 | 28.7% | 22.5–35.8 | in line |
| Beaverhead County | 9,885 | 28.3% | 22.4–34.9 | in line |
| Missoula County | 121,849 | 26.2% | 22.4–30.1 | below |
| Gallatin County | 126,409 | 23.0% | 19.2–26.8 | below |
Largest places in Montana
- Billings 117,116
- Missoula 73,489
- Great Falls 60,442
- Bozeman 53,293
- Butte-Silver Bow (balance) 34,494
- Helena 32,091
- Kalispell 24,558
- Belgrade 10,460
- Anaconda-Deer Lodge County 9,421
- Havre 9,362
- Helena Valley Southeast 9,168
- Helena Valley West Central 8,670
- Miles City 8,354
- Evergreen 8,149
- Livingston 8,040
- Whitefish 7,751
- Laurel 7,222
- Lockwood 7,195
- Sidney 6,346
- Lewistown 5,952
- Four Corners 5,901
- Orchard Homes 5,377
- Columbia Falls 5,308
- Polson 5,148
- Bigfork 5,118
The 25 most populous places; every county page lists all of its places and ZIP Codes.
Measures
State figures are population-weighted county estimates computed by this site and carry no interval; the word says whether each falls above, below or within CDC's national interval.
Health outcomes
- All Teeth Lost 12.3% (site aggregate) · US 12.2% · within US interval
- Arthritis 28.4% (site aggregate) · US 25.4% · above US interval
- Cancer (non-skin) or Melanoma 9.3% (site aggregate) · US 7.9% · above US interval
- COPD 7.0% (site aggregate) · US 6.2% · above US interval
- Coronary Heart Disease 6.6% (site aggregate) · US 6.4% · above US interval
- Current Asthma 11.1% (site aggregate) · US 9.8% · above US interval
- Depression 24.9% (site aggregate) · US 20.2% · above US interval
- Diabetes 9.9% (site aggregate) · US 12.0% · below US interval
- High Blood Pressure 31.9% (site aggregate) · US 34.4% · below US interval
- High Cholesterol 32.8% (site aggregate) · US 37.4% · below US interval
- Obesity 31.4% (site aggregate) · US 32.8% · below US interval
- Stroke 3.5% (site aggregate) · US 3.4% · within US interval
Prevention
- Cholesterol Screening 82.5% (site aggregate) · US 87.5% · below US interval
- Colorectal Cancer Screening 63.8% (site aggregate) · US 66.3% · below US interval
- Health Insurance 9.3% (site aggregate) · US 11.0% · below US interval
- Mammography 74.8% (site aggregate) · US 76.5% · below US interval
- High Blood Pressure Medication 73.4% (site aggregate) · US 77.0% · below US interval
- Dental Visit 63.3% (site aggregate) · US 63.9% · below US interval
- Annual Checkup 72.4% (site aggregate) · US 77.7% · below US interval
Health risk behaviors
- Binge Drinking 20.3% (site aggregate) · US 15.2% · above US interval
- Current Cigarette Smoking 13.6% (site aggregate) · US 11.4% · above US interval
- Physical Inactivity 20.6% (site aggregate) · US 24.5% · below US interval
- Short Sleep Duration 31.4% (site aggregate) · US 36.0% · below US interval
Disability
- Any Disability 30.9% (site aggregate) · US 30.0% · above US interval
- Cognitive Disability 14.3% (site aggregate) · US 13.7% · above US interval
- Hearing Disability 8.6% (site aggregate) · US 6.7% · above US interval
- Independent Living Disability 8.0% (site aggregate) · US 7.9% · within US interval
- Mobility Disability 12.9% (site aggregate) · US 13.5% · below US interval
- Self-care Disability 3.5% (site aggregate) · US 3.8% · below US interval
- Vision Disability 4.6% (site aggregate) · US 5.5% · below US interval
Health status
- General Health 18.3% (site aggregate) · US 19.2% · below US interval
- Frequent Mental Distress 17.2% (site aggregate) · US 15.6% · above US interval
- Frequent Physical Distress 14.0% (site aggregate) · US 12.8% · above US interval
Health-related social needs
- Food Insecurity 11.7% (site aggregate) · US 14.7% · below US interval
- Housing Insecurity 9.1% (site aggregate) · US 11.7% · below US interval
- Transportation Barriers 7.5% (site aggregate) · US 7.7% · within US interval
- Lack of Social/Emotional Support 21.2% (site aggregate) · US 23.3% · below US interval
- Loneliness 30.7% (site aggregate) · US 32.0% · below US interval
- Food Stamps 8.3% (site aggregate) · US 11.2% · below US interval
- Utility Services Threat 6.5% (site aggregate) · US 7.4% · below US interval
Questions and answers
How is the Montana figure calculated?
PLACES publishes county, place, tract and ZCTA estimates but no state row. Following CDC's guidance for aggregating areas, this site multiplies each county's estimate by its adult population, sums across the state's 56 counties and divides by the total adult population. The result has no published confidence interval, so county pages describe their position against it as above, below or in line with the state figure.
Which Montana counties have the highest obesity estimates?
The county table on this page can be sorted by any of the 40 measures. Estimates are listed with their 95% confidence intervals; adjacent counties often have overlapping intervals and cannot be told apart, so the order is by point estimate only and is not a ranking of health.
What is the difference between crude and age-adjusted figures?
Crude prevalence is the estimated share of all adults. Age-adjusted prevalence re-weights the estimate to the 2000 US standard population so areas with different age structures can be compared; CDC publishes age-adjusted figures for counties and places only. The toggle on this page switches between them.
Where does this data come from?
CDC PLACES: Local Data for Better Health, 2025 release, data updated 4 Dec 2025; the state figure for obesity is 31.4% (site aggregate) in the 2025 release.
Provenance
Source: Centers for Disease Control and Prevention, PLACES: Local Data for Better Health, 2025 release (data updated 4 Dec 2025), with the 2022, 2023, 2024 releases for reference; US government work, public domain. Boundaries and ZIP-to-county relationships: US Census Bureau. Percentages are shown to one decimal as CDC publishes them; state figures are population-weighted means computed by this site. The Montana figure for each measure is the sum over counties of estimate × adult population, divided by the state's adult population, per CDC's guidance for aggregating areas; measures defined on a subgroup (women 50–74, adults 18–64, adults 65 and over) are weighted by total adult population as an approximation. Processing errors are corrected at the next daily build; see corrections. Generated 30 Sep 2026.