Counties in Montana by natural change, July to June
Gallatin County had the highest natural change, July to June of 56 counties in 2018, at 694. Lincoln County had the lowest, at -65. The median was 1 and the figure for Montana was 1,763. Source: the U.S. Census Bureau.
Map of counties, 2018
- Under -22
- -22 to -9
- -9 to 0
- 0 to 4
- 4 to 56
- 56 and over
All counties, 2018
Full ranking
| Rank | Counties | 2018 | Change on 2017 |
|---|---|---|---|
| 1 | Gallatin County Estimated | 694 | +21.1% |
| 2 | Yellowstone County Estimated | 232 | -46.2% |
| 3 | Missoula County Estimated | 198 | -6.2% |
| 4 | Cascade County Estimated | 188 | +20.5% |
| 5 | Flathead County Estimated | 180 | -26.8% |
| 6 | Hill County Estimated | 160 | +0.6% |
| 7 | Lewis and Clark County Estimated | 135 | -7.5% |
| 8 | Roosevelt County Estimated | 99 | -11.6% |
| 9 | Big Horn County Estimated | 80 | -42% |
| 10 | Glacier County Estimated | 67 | -11.8% |
| 11 | Rosebud County Estimated | 64 | +77.8% |
| 12 | Richland County Estimated | 39 | -33.9% |
| 13 | Blaine County Estimated | 25 | -24.2% |
| 14 | Teton County Estimated | 24 | +26.3% |
| 15 | Park County Estimated | 15 | +193.8% |
| 16 | Chouteau County Estimated | 14 | +160.9% |
| 17 | Lake County Estimated | 12 | -75.5% |
| 17 | Toole County Estimated | 12 | +200% |
| 19 | Valley County Estimated | 7 | +200% |
| 20 | Liberty County Estimated | 6 | -57.1% |
| 21 | Powder River County Estimated | 5 | +400% |
| 22 | Treasure County Estimated | 4 | +300% |
| 23 | Beaverhead County Estimated | 3 | +110% |
| 23 | Pondera County Estimated | 3 | -75% |
| 23 | Sheridan County Estimated | 3 | +116.7% |
| 23 | Sweet Grass County Estimated | 3 | +400% |
| 27 | Judith Basin County Estimated | 2 | +166.7% |
| 28 | Stillwater County Estimated | 1 | -75% |
| 29 | Fallon County Estimated | 0 | -100% |
| 29 | Garfield County Estimated | 0 | -100% |
| 29 | Golden Valley County Estimated | 0 | |
| 29 | Petroleum County Estimated | 0 | +100% |
| 33 | Mineral County Estimated | -3 | +88.9% |
| 33 | Wibaux County Estimated | -3 | |
| 35 | Carter County Estimated | -4 | -500% |
| 35 | Madison County Estimated | -4 | +87.1% |
| 37 | McCone County Estimated | -6 | 0% |
| 37 | Wheatland County Estimated | -6 | -700% |
| 39 | Daniels County Estimated | -7 | +22.2% |
| 40 | Prairie County Estimated | -8 | -33.3% |
| 41 | Meagher County Estimated | -9 | -28.6% |
| 42 | Broadwater County Estimated | -10 | +44.4% |
| 43 | Phillips County Estimated | -16 | -300% |
| 43 | Powell County Estimated | -16 | +54.3% |
| 45 | Granite County Estimated | -17 | -54.5% |
| 46 | Ravalli County Estimated | -20 | +85.1% |
| 47 | Dawson County Estimated | -22 | -1,200% |
| 47 | Fergus County Estimated | -22 | +62.7% |
| 49 | Jefferson County Estimated | -23 | -675% |
| 50 | Custer County Estimated | -24 | -442.9% |
| 50 | Musselshell County Estimated | -24 | -4.3% |
| 52 | Carbon County Estimated | -36 | -260% |
| 53 | Silver Bow County Estimated | -47 | -17.5% |
| 54 | Sanders County Estimated | -59 | -103.4% |
| 55 | Deer Lodge County Estimated | -61 | -32.6% |
| 56 | Lincoln County Estimated | -65 | +1.5% |
Other periods
About this ranking
Estimated births minus deaths of residents from July 1 of the previous year through June 30 of the reported year. A negative value means more deaths than births.
Equals births_july_june minus deaths_july_june for the same place and year. Not a calendar-year figure.
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
U.S. Census Bureau. Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.Citation styles
APA 7
U.S. Census Bureau. (2026). Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021 (Counties in Montana by natural change, July to June, 2018) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html
MLA 9
Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021, Counties in Montana by natural change, July to June, 2018. U.S. Census Bureau, 26 Mar. 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/natural-change-july-june/montana-counties?period=2018. Accessed 12 Oct. 2026.
Chicago (author-date)
U.S. Census Bureau. 2026. Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. Counties in Montana by natural change, July to June, 2018. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/natural-change-july-june/montana-counties?period=2018.
Harvard
U.S. Census Bureau (2026) Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021, Counties in Montana by natural change, July to June, 2018 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/natural-change-july-june/montana-counties?period=2018 (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_montana_by_2018,
author = {{U.S. Census Bureau}},
title = {{Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021: Counties in Montana by natural change, July to June, 2018}},
year = {2026},
howpublished = {Data set},
url = {https://www.census.gov/programs-surveys/popest/data/data-sets.html},
urldate = {2026-10-12},
note = {Accessed via Invokely, https://invokely.ai/rankings/natural-change-july-june/montana-counties?period=2018. Publisher attribution: U.S. Census Bureau. Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.},
}
RIS
TY - DATA
AU - U.S. Census Bureau
TI - Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021: Counties in Montana by natural change, July to June, 2018
PY - 2026
DA - 2026/03/26
PB - U.S. Census Bureau
DB - Invokely
UR - https://www.census.gov/programs-surveys/popest/data/data-sets.html
L2 - https://invokely.ai/rankings/natural-change-july-june/montana-counties?period=2018
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/natural-change-july-june/montana-counties?period=2018.
N1 - Publisher attribution: U.S. Census Bureau. Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.
ER -
Use this data in your AI agent
Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:
Rank Counties in Montana by natural change, July to June using official data, and cite the source.
rank_places {"indicator":"natural_change_july_june","level":"province","within":"Montana","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=natural_change_july_june&level=province&within=Montana&limit=10Questions
Which county has the highest natural change, July to June?
Gallatin County, with 694 in 2018, according to the U.S. Census Bureau.
Which county has the lowest natural change, July to June?
Lincoln County, with -65 in 2018.
Where does this ranking come from?
Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. Retrieved 2026-10-12.