county record · population · Montana
Population of Cascade County, Montana
Cascade County had an estimated population of 84,523 on July 1, 2024, according to the Census Bureau's Population Estimates Program.
What stands out
Cascade County had an estimated population of 84,523 on July 1, 2024, according to the Census Bureau's Population Estimates Program. Since July 2020 that is +0.1 % (112 people); since 2010 it is +3.7 %. Migration is the larger driver since 2020: net migration +576 against a natural change (births minus deaths) of -478. Among the 56 counties in Montana, it ranks 5 by population. Values for 2010–2019 and 2020–2024 come from two estimate vintages benchmarked to different censuses; the 2019→2020 step is partly a rebasing.
Population and components of change, year by year
Estimates are for July 1 of each year. Components cover the estimate year from July 1 of the previous year to June 30; the first year of each vintage (2010, 2020) covers April 1 to June 30 only. Net migration = international + domestic; the residual is not shown.
| Year | Population (July 1) | Change | Births | Deaths | Natural change | International migration | Domestic migration | Net migration | Source |
|---|---|---|---|---|---|---|---|---|---|
| 2024 | 84,523 | -102 | +933 | +1,007 | -74 | +2 | -23 | -21 | evidence → |
| 2023 | 84,625 | -283 | +914 | +1,020 | -106 | +9 | -165 | -156 | evidence → |
| 2022 | 84,908 | +343 | +937 | +1,100 | -163 | -3 | +520 | +517 | evidence → |
| 2021 | 84,565 | +154 | +923 | +1,058 | -135 | +3 | +233 | +236 | evidence → |
| 2020 Apr–Jun only | 84,411 | +3,045 | +233 | +200 | +33 | +4 | -61 | -57 | evidence → |
| 2019 | 81,366 | -322 | +1,054 | +785 | +269 | +6 | -595 | -589 | evidence → |
| 2018 | 81,688 | +55 | +1,039 | +821 | +218 | -23 | -136 | -159 | evidence → |
| 2017 | 81,633 | +71 | +1,091 | +932 | +159 | +41 | -122 | -81 | evidence → |
| 2016 | 81,562 | -316 | +1,118 | +903 | +215 | +98 | -627 | -529 | evidence → |
| 2015 | 81,878 | -178 | +1,201 | +827 | +374 | +99 | -651 | -552 | evidence → |
| 2014 | 82,056 | -138 | +1,149 | +800 | +349 | +75 | -557 | -482 | evidence → |
| 2013 | 82,194 | +572 | +1,183 | +793 | +390 | +157 | +35 | +192 | evidence → |
| 2012 | 81,622 | -92 | +1,181 | +790 | +391 | +216 | -703 | -487 | evidence → |
| 2011 | 81,714 | +207 | +1,196 | +818 | +378 | +29 | -196 | -167 | evidence → |
| 2010 Apr–Jun only | 81,507 | — | +312 | +230 | +82 | +61 | +40 | +101 | evidence → |
| Census 2010 (April 1 count) | 81,327 | evidence → | |||||||
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