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Understand Idaho

Twin Falls population

56,216

Resident population of Twin Falls, 2025 (estimate)

+1.2% since 2024 (55,558); +7.9% since 2020 (52,112)

Source: U.S. Census Bureau, Population Estimates Program, Vintage 2025 (with Vintage 2019 for 2010-2019). Data period 2025. Status: estimate. Published .

Resident population as of July 1 of the given year.

Change and comparison

The latest figure, 2025, is the highest in the series, which begins in 2020.

Historical data

Twin Falls population, 2020 to 2025Twin Falls population, 2020 to 2025. 10 series. Twin Falls: 52,112 in 2020, 56,216 in 2025.0100k200k300k202020222024Twin FallsBoiseCaldwellCoeurd'AleneIdaho FallsMeridianNampaPocatelloPost FallsRexburgPeopleTwin Falls population, 2020 to 2025Twin Falls population, 2020 to 2025. 10 series. Twin Falls: 52,112 in 2020, 56,216 in 2025.0100k200k300k202020222024Twin FallsBoiseCaldwellCoeur d'AleneIdaho FallsMeridianNampaPocatelloPost FallsRexburgPeopleTwin Falls population, 2020 to 2025Twin Falls population, 2020 to 2025. 10 series. Twin Falls: 52,112 in 2020, 56,216 in 2025.0100k200k300k202020212022202320242025Twin FallsBoiseCaldwellCoeur d'AleneIdaho FallsMeridianNampaPocatelloPost FallsRexburgPeople

Source: U.S. Census Bureau, Population Estimates Program, Vintage 2025 (with Vintage 2019 for 2010-2019). Published .

Data table (6 rows)
PeriodTwin Falls (people)Boise (people)Caldwell (people)Coeur d'Alene (people)Idaho Falls (people)Meridian (people)Nampa (people)Pocatello (people)Post Falls (people)Rexburg (people)
202052,112236,03360,70854,95165,908119,506101,40656,86339,32039,803
202153,531238,20263,91656,15367,170125,896106,58957,85742,73040,439
202254,432237,41666,05456,74167,807130,097111,15358,37344,23741,001
202355,102236,29768,69356,97768,065135,242114,84358,54944,88040,517
202455,558237,73073,17757,37669,568139,593117,57758,60045,81540,329
202556,216238,42976,62958,17971,785142,988120,38458,77146,71540,334

By city

The 10 most populous incorporated cities in Idaho, 2025. A city with its own page is linked.

  1. Boise238,429
  2. Meridian142,988
  3. Nampa120,384
  4. Caldwell76,629
  5. Idaho Falls71,785
  6. Pocatello58,771
  7. Coeur d'Alene58,179
  8. Twin Falls56,216
  9. Post Falls46,715
  10. Rexburg40,334

Source: U.S. Census Bureau, Population Estimates Program, Vintage 2025 (with Vintage 2019 for 2010-2019). Data period 2025. Published .

Data table (10 rows)
City2025
1. Boise City238,429
2. Meridian142,988
3. Nampa120,384
4. Caldwell76,629
5. Idaho Falls71,785
6. Pocatello58,771
7. Coeur d'Alene58,179
8. Twin Falls56,216
9. Post Falls46,715
10. Rexburg40,334

Source

Organization
U.S. Census Bureau
Dataset
Population Estimates Program, Vintage 2025 (with Vintage 2019 for 2010-2019)
Geography
Nation, all 50 states and DC, Idaho's 44 counties, and the ten largest Idaho incorporated places
Time coverage
2010-2025
Update frequency
Annual
Published
Original file
https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/counties/totals/co-est2025-alldata.csv
Methodology
https://www.census.gov/programs-surveys/popest/technical-documentation/methodology.html
License
Public domain. U.S. federal government work.
Our copy
Population Estimates Program, Vintage 2025 (with Vintage 2019 for 2010-2019), built by scripts/fetch-census-pep.py

Caveats

  • Totals for 2010-2019 are Vintage 2019 estimates and 2020-2025 are Vintage 2025; the two series are not reconciled, so a change at the seam includes the vintage revision.
  • City (incorporated place) totals cover 2020-2025 only; no 2010-2019 city series is included.
  • Components of change are published for the nation, states and Idaho's 44 counties; other states' county components are not included.
  • The ten places are Boise City, Meridian, Nampa, Caldwell, Idaho Falls, Pocatello, Coeur d'Alene, Twin Falls, Post Falls and Rexburg, the ten largest by 2025 population estimate.
  • Group quarters estimates, the residual component, population-based rates, and Puerto Rico are not included.

Where sources disagree

  • Population, Idaho, 2020: 2020 Census apportionment counts (census-decennial dataset, apportionment.csv) publishes 1,839,106. The Vintage 2025 Population Estimates Program's April 1, 2020 base for Idaho (ESTIMATESBASE2020) is 1,839,123, 17 more than the 1,839,106 the Census Bureau delivered as Idaho's official 2020 Census apportionment count. This estimates-base figure is not itself shipped as an observation (it is not a July 1 estimate), but the same small, unreconciled gap likely carries into this dataset's 2020-2025 state and county totals, which build forward from that base.

Cite

Cite this page as Understand Idaho, “Twin Falls population”, https://understandidaho.com/population/twin-falls/, retrieved on the date you read it, and the publisher named above for the figures themselves. The dataset behind it is described in the data catalog.

This page was last updated .