Cities in Idaho by population

Boise City, ID had the highest population of 27 cities in 2020, at 236,033. Sandpoint, ID had the lowest, at 8,726. The median was 24,526 and the figure for Idaho was 1.85 million. Source: the U.S. Census Bureau.

Highest236,033Boise City, ID

Lowest8,726Sandpoint, ID

Median24,52627 cities

Idaho1,849,328History

All cities, 2020

persons. Source: U.S. Census Bureau, Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals). Retrieved 2026-10-12.

Full ranking

Rank	Cities	2020 persons
1	Boise City, ID	236,033
2	Meridian, ID	119,506
3	Nampa, ID	101,406
4	Idaho Falls, ID	65,908
5	Caldwell, ID	60,708
6	Pocatello, ID	56,863
7	Coeur d'Alene, ID	54,951
8	Twin Falls, ID	52,112
9	Rexburg, ID	39,803
10	Post Falls, ID	39,320
11	Lewiston, ID	34,252
12	Eagle, ID	31,630
13	Moscow, ID	25,528
14	Kuna, ID	24,526
15	Ammon, ID	17,877
16	Mountain Home, ID	16,051
17	Chubbuck, ID	15,677
18	Hayden, ID	15,653
19	Blackfoot, ID	12,404
20	Jerome, ID	12,366
21	Garden City, ID	12,292
22	Burley, ID	11,757
23	Star, ID	11,488
24	Middleton, ID	9,573
25	Rathdrum, ID	9,289
26	Hailey, ID	9,199
27	Sandpoint, ID	8,726

Other periods

About this ranking

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). Norway: Statistics Norway, 1 January. Iceland and its municipalities: Statistics Iceland, 1 January. United States: Census Bureau population estimates for 1 July. United Kingdom regions and local authorities: Office for National Statistics estimates for 30 June. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship. UN World Population Prospects estimates for 1 July cover the years before 1960 and the areas the World Bank does not publish, such as Taiwan.

The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

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

How to cite

U.S. Census Bureau. Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-12.

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

U.S. Census Bureau. (2026). Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals) (Cities in Idaho by population, 2020) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/

MLA 9

Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals), Cities in Idaho by population, 2020. U.S. Census Bureau, 14 May 2026, https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Invokely, https://invokely.ai/rankings/population/idaho-cities?period=2020. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals). Cities in Idaho by population, 2020. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Also distributed by Invokely, https://invokely.ai/rankings/population/idaho-cities?period=2020.

Harvard

U.S. Census Bureau (2026) Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals), Cities in Idaho by population, 2020 [Dataset]. Available at: https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/, via Invokely: https://invokely.ai/rankings/population/idaho-cities?period=2020 (Accessed: 12 October 2026).

BibTeX

@misc{census_cities_in_idaho_by_2020,
  author = {{U.S. Census Bureau}},
  title = {{Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals): Cities in Idaho by population, 2020}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/population/idaho-cities?period=2020. Publisher attribution: U.S. Census Bureau. Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-12.},
}

RIS

TY  - DATA
AU  - U.S. Census Bureau
TI  - Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals): Cities in Idaho by population, 2020
PY  - 2026
DA  - 2026/05/14
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/
L2  - https://invokely.ai/rankings/population/idaho-cities?period=2020
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population/idaho-cities?period=2020.
N1  - Publisher attribution: U.S. Census Bureau. Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-12.
ER  -

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Questions

Which city has the highest population?

Boise City, ID, with 236,033 in 2020, according to the U.S. Census Bureau.

Which city has the lowest population?

Sandpoint, ID, with 8,726 in 2020.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals). Retrieved 2026-10-12.