Data / Rankings / Diagnosed diabetes in adults, local model estimate / Counties in Montana

Counties in Montana by diagnosed diabetes in adults, local model estimate

Prairie County had the highest diagnosed diabetes in adults, local model estimate of 56 counties in 2021, at 15.7%. Gallatin County had the lowest, at 6%. The median was 11.1%. Source: the Centers for Disease Control and Prevention.

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Highest15.7Prairie County
Lowest6Gallatin County
Median11.156 counties

Map of counties, 2021

Beaverhead County: 10.4 %Big Horn County: 15.4 %Blaine County: 13.7 %Broadwater County: 10.9 %Carbon County: 10.4 %Carter County: 11.9 %Cascade County: 9.9 %Chouteau County: 11.5 %Custer County: 9.8 %Daniels County: 11.5 %Dawson County: 9.8 %Deer Lodge County: 12.9 %Fallon County: 9.4 %Fergus County: 10.7 %Flathead County: 9.4 %Gallatin County: 6 %Garfield County: 10.4 %Glacier County: 15.3 %Golden Valley County: 12.6 %Granite County: 12.7 %Hill County: 10.8 %Jefferson County: 9.4 %Judith Basin County: 12.1 %Lake County: 12.4 %Lewis and Clark County: 8.9 %Liberty County: 12.6 %Lincoln County: 13.5 %McCone County: 10.7 %Madison County: 10.2 %Meagher County: 11.7 %Mineral County: 12.7 %Missoula County: 7.7 %Musselshell County: 12.4 %Park County: 10.1 %Petroleum County: 11.8 %Phillips County: 11.6 %Pondera County: 11.3 %Powder River County: 12.1 %Powell County: 10.8 %Prairie County: 15.7 %Ravalli County: 10.8 %Richland County: 9 %Roosevelt County: 14.1 %Rosebud County: 13.3 %Sanders County: 14.3 %Sheridan County: 10.5 %Silver Bow County: 10.3 %Stillwater County: 10.4 %Sweet Grass County: 10.7 %Teton County: 10.8 %Toole County: 10.3 %Treasure County: 12.5 %Valley County: 11.5 %Wheatland County: 13.4 %Wibaux County: 11.2 %Yellowstone County: 9.3 %
  • Under 9.8
  • 9.8 to 10
  • 10 to 11
  • 11 to 12
  • 12 to 13
  • 13 and over
%, 2021. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2021

Prairie County: 15.7 %Prairie County15.7Big Horn County: 15.4 %Big Horn County15.4Glacier County: 15.3 %Glacier County15.3Sanders County: 14.3 %Sanders County14.3Roosevelt County: 14.1 %Roosevelt County14.1Blaine County: 13.7 %Blaine County13.7Lincoln County: 13.5 %Lincoln County13.5Wheatland County: 13.4 %Wheatland County13.4Rosebud County: 13.3 %Rosebud County13.3Deer Lodge County: 12.9 %Deer Lodge County12.9Granite County: 12.7 %Granite County12.7Mineral County: 12.7 %Mineral County12.7Golden Valley County: 12.6 %Golden Valley County12.6Liberty County: 12.6 %Liberty County12.6Treasure County: 12.5 %Treasure County12.5Lake County: 12.4 %Lake County12.4Musselshell County: 12.4 %Musselshell County12.4Judith Basin County: 12.1 %Judith Basin County12.1Powder River County: 12.1 %Powder River County12.1Carter County: 11.9 %Carter County11.9Petroleum County: 11.8 %Petroleum County11.8Meagher County: 11.7 %Meagher County11.7Phillips County: 11.6 %Phillips County11.6Chouteau County: 11.5 %Chouteau County11.5Daniels County: 11.5 %Daniels County11.5Valley County: 11.5 %Valley County11.5Pondera County: 11.3 %Pondera County11.3Wibaux County: 11.2 %Wibaux County11.2Broadwater County: 10.9 %Broadwater County10.9Hill County: 10.8 %Hill County10.8Powell County: 10.8 %Powell County10.8Ravalli County: 10.8 %Ravalli County10.8Teton County: 10.8 %Teton County10.8Fergus County: 10.7 %Fergus County10.7McCone County: 10.7 %McCone County10.7Sweet Grass County: 10.7 %Sweet Grass County10.7Sheridan County: 10.5 %Sheridan County10.5Beaverhead County: 10.4 %Beaverhead County10.4Carbon County: 10.4 %Carbon County10.4Garfield County: 10.4 %Garfield County10.4Stillwater County: 10.4 %Stillwater County10.4Silver Bow County: 10.3 %Silver Bow County10.3Toole County: 10.3 %Toole County10.3Madison County: 10.2 %Madison County10.2Park County: 10.1 %Park County10.1Cascade County: 9.9 %Cascade County9.9Custer County: 9.8 %Custer County9.8Dawson County: 9.8 %Dawson County9.8Fallon County: 9.4 %Fallon County9.4Flathead County: 9.4 %Flathead County9.4Jefferson County: 9.4 %Jefferson County9.4Yellowstone County: 9.3 %Yellowstone County9.3Richland County: 9 %Richland County9Lewis and Clark County: 8.9 %Lewis and Clark County8.9Missoula County: 7.7 %Missoula County7.7Gallatin County: 6 %Gallatin County6Prairie County: 15.7 %Prairie County15.7Big Horn County: 15.4 %Big Horn County15.4Glacier County: 15.3 %Glacier County15.3Sanders County: 14.3 %Sanders County14.3Roosevelt County: 14.1 %Roosevelt County14.1Blaine County: 13.7 %Blaine County13.7Lincoln County: 13.5 %Lincoln County13.5Wheatland County: 13.4 %Wheatland County13.4Rosebud County: 13.3 %Rosebud County13.3Deer Lodge County: 12.9 %Deer Lodge County12.9Granite County: 12.7 %Granite County12.7Mineral County: 12.7 %Mineral County12.7Golden Valley County: 12.6 %Golden Valley County12.6Liberty County: 12.6 %Liberty County12.6Treasure County: 12.5 %Treasure County12.5Lake County: 12.4 %Lake County12.4Musselshell County: 12.4 %Musselshell County12.4Judith Basin County: 12.1 %Judith Basin County12.1Powder River County: 12.1 %Powder River County12.1Carter County: 11.9 %Carter County11.9Petroleum County: 11.8 %Petroleum County11.8Meagher County: 11.7 %Meagher County11.7Phillips County: 11.6 %Phillips County11.6Chouteau County: 11.5 %Chouteau County11.5Daniels County: 11.5 %Daniels County11.5Valley County: 11.5 %Valley County11.5Pondera County: 11.3 %Pondera County11.3Wibaux County: 11.2 %Wibaux County11.2Broadwater County: 10.9 %Broadwater County10.9Hill County: 10.8 %Hill County10.8Powell County: 10.8 %Powell County10.8Ravalli County: 10.8 %Ravalli County10.8Teton County: 10.8 %Teton County10.8Fergus County: 10.7 %Fergus County10.7McCone County: 10.7 %McCone County10.7Sweet Grass County: 10.7 %Sweet Grass County10.7Sheridan County: 10.5 %Sheridan County10.5Beaverhead County: 10.4 %Beaverhead County10.4Carbon County: 10.4 %Carbon County10.4Garfield County: 10.4 %Garfield County10.4Stillwater County: 10.4 %Stillwater County10.4Silver Bow County: 10.3 %Silver Bow County10.3Toole County: 10.3 %Toole County10.3Madison County: 10.2 %Madison County10.2Park County: 10.1 %Park County10.1Cascade County: 9.9 %Cascade County9.9Custer County: 9.8 %Custer County9.8Dawson County: 9.8 %Dawson County9.8Fallon County: 9.4 %Fallon County9.4Flathead County: 9.4 %Flathead County9.4Jefferson County: 9.4 %Jefferson County9.4Yellowstone County: 9.3 %Yellowstone County9.3Richland County: 9 %Richland County9Lewis and Clark County: 8.9 %Lewis and Clark County8.9Missoula County: 7.7 %Missoula County7.7Gallatin County: 6 %Gallatin County6
%. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Prairie County15.7
2Big Horn County15.4
3Glacier County15.3
4Sanders County14.3
5Roosevelt County14.1
6Blaine County13.7
7Lincoln County13.5
8Wheatland County13.4
9Rosebud County13.3
10Deer Lodge County12.9
11Granite County12.7
11Mineral County12.7
13Golden Valley County12.6
13Liberty County12.6
15Treasure County12.5
16Lake County12.4
16Musselshell County12.4
18Judith Basin County12.1
18Powder River County12.1
20Carter County11.9
21Petroleum County11.8
22Meagher County11.7
23Phillips County11.6
24Chouteau County11.5
24Daniels County11.5
24Valley County11.5
27Pondera County11.3
28Wibaux County11.2
29Broadwater County10.9
30Hill County10.8
30Powell County10.8
30Ravalli County10.8
30Teton County10.8
34Fergus County10.7
34McCone County10.7
34Sweet Grass County10.7
37Sheridan County10.5
38Beaverhead County10.4
38Carbon County10.4
38Garfield County10.4
38Stillwater County10.4
42Silver Bow County10.3
42Toole County10.3
44Madison County10.2
45Park County10.1
46Cascade County9.9
47Custer County9.8
47Dawson County9.8
49Fallon County9.4
49Flathead County9.4
49Jefferson County9.4
52Yellowstone County9.3
53Richland County9
54Lewis and Clark County8.9
55Missoula County7.7
56Gallatin County6

Other periods

About this ranking

Percentage of adults who report being told by a doctor or other health professional that they have diabetes, other than diabetes only during pregnancy. Model-based estimate for adults aged 18 and over from CDC PLACES. Crude prevalence, not age-adjusted.

US counties and cities (incorporated places of 10,000 or more). CDC PLACES combines Behavioral Risk Factor Surveillance System (BRFSS) answers with local population data through multilevel regression and poststratification, so a county or city value is a model estimate, not a survey count. The year is the BRFSS survey year, not the release year. CDC says the method does not support tracking change in a place over time, and each annual release can change the model, so values for different years are not strictly comparable. A state is missing in a year when its BRFSS data did not meet standards (Kentucky and Pennsylvania in 2023, Florida in 2021). Connecticut counties appear as its nine planning regions from 2022; its eight former counties are not served. City values for 2021 come from the 2023 release, built on 2010 Census place boundaries; later years use 2020 boundaries.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

Centers for Disease Control and Prevention (CDC). PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. https://www.cdc.gov/places/. Retrieved 2026-10-12. These data are available free from CDC. Use does not imply endorsement by CDC, ATSDR, HHS or the United States Government.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

Centers for Disease Control and Prevention. (2025). PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence (Counties in Montana by diagnosed diabetes in adults, local model estimate, 2021) [Data set]. Retrieved October 12, 2026, from https://www.cdc.gov/places/

MLA 9

PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence, Counties in Montana by diagnosed diabetes in adults, local model estimate, 2021. Centers for Disease Control and Prevention, 4 Dec. 2025, https://www.cdc.gov/places/. Invokely, https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/montana-counties?period=2021. Accessed 12 Oct. 2026.

Chicago (author-date)

Centers for Disease Control and Prevention. 2025. PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. Counties in Montana by diagnosed diabetes in adults, local model estimate, 2021. Dataset. Accessed October 12, 2026. https://www.cdc.gov/places/. Also distributed by Invokely, https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/montana-counties?period=2021.

Harvard

Centers for Disease Control and Prevention (2025) PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence, Counties in Montana by diagnosed diabetes in adults, local model estimate, 2021 [Dataset]. Available at: https://www.cdc.gov/places/, via Invokely: https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/montana-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{centers_counties_in_montana_by_2021,
  author = {{Centers for Disease Control and Prevention}},
  title = {{PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence: Counties in Montana by diagnosed diabetes in adults, local model estimate, 2021}},
  year = {2025},
  howpublished = {Data set},
  url = {https://www.cdc.gov/places/},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/montana-counties?period=2021. Publisher attribution: Centers for Disease Control and Prevention (CDC). PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. https://www.cdc.gov/places/. Retrieved 2026-10-12. These data are available free from CDC. Use does not imply endorsement by CDC, ATSDR, HHS or the United States Government.},
}
RIS
TY  - DATA
AU  - Centers for Disease Control and Prevention
TI  - PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence: Counties in Montana by diagnosed diabetes in adults, local model estimate, 2021
PY  - 2025
DA  - 2025/12/04
PB  - Centers for Disease Control and Prevention
DB  - Invokely
UR  - https://www.cdc.gov/places/
L2  - https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/montana-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/montana-counties?period=2021.
N1  - Publisher attribution: Centers for Disease Control and Prevention (CDC). PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. https://www.cdc.gov/places/. Retrieved 2026-10-12. These data are available free from CDC. Use does not imply endorsement by CDC, ATSDR, HHS or the United States Government.
ER  -
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Questions

Which county has the highest diagnosed diabetes in adults, local model estimate?

Prairie County, with 15.7% in 2021, according to the Centers for Disease Control and Prevention.

Which county has the lowest diagnosed diabetes in adults, local model estimate?

Gallatin County, with 6% in 2021.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: Centers for Disease Control and Prevention, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. Retrieved 2026-10-12.

Diagnosed diabetes in adults, local model estimate: other rankings

Counties in Montana: more rankings