Data / Population / Granite County

Population in Granite County

Population in Granite County was 3,658 in 2025, according to the U.S. Census Bureau. That is up 0.5% from 2024. That is the 40th highest of 56 counties in 2025.

2025, persons3,658
Change on 2024+0.5%
Rank40th of 56Counties in Montana ranked
Series high3,6582025
Series low3,3072020

Population in Granite County, 2020 to 2025

CSVChart (SVG)

3,3003,4003,5003,6003,7002020202120222023202420252020: 3,307 persons2021: 3,361 persons2022: 3,488 persons2023: 3,592 persons2024: 3,639 persons2025: 3,658 persons
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08, published 2026-03-26.
All 6 values
Periodpersons
20253,658
20243,639
20233,592
20223,488
20213,361
20203,307

Compared with Montana and United States

Place2025
Granite County3,658
Montana1,144,694
United States341,784,857

Rankings

Definition

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). United States: Census Bureau population estimates for 1 July. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship.

For Denmark, Statistics Denmark counts the registered resident population on 1 January. Greenland and the Faroe Islands are excluded. The annual series selects the first-quarter reference date from FOLK1A. The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

How to cite

U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.

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Questions

What is the population in Granite County?

Population in Granite County was 3,658 in 2025, according to the U.S. Census Bureau. That is up 0.5% from 2024. That is the 40th highest of 56 counties in 2025.

Where does this figure come from?

U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). Retrieved by Invokely on 2026-10-08.

What was the highest population in Granite County?

3,658 in 2025, the highest value since 2020 in this series.

More statistics for Granite County

All statistics for Granite County