What is the population of Twin Falls County?

The population of Twin Falls County, ID is 86,878.

Where is Twin Falls County located?

Twin Falls County, ID is located at latitude 42.3559800 and longitude -114.6671600. It is in United States.

What is the area of Twin Falls County?

The area of Twin Falls County, ID is 4995 km².

What is the elevation of Twin Falls County?

Twin Falls County, ID has an elevation of 1380 meters (4528 feet) above sea level.

What time zone is Twin Falls County in?

Twin Falls County, ID is in the America/Boise time zone.

How has the population of Twin Falls County changed?

The population of Twin Falls County, ID has increased from 77,230 (2010) to 86,878 (2019), a change of 12.5%.

Twin Falls County, Idaho

Twin Falls County: county in Idaho, United States

About

Twin Falls County is a county located in the U.S. state of Idaho. As of the 2010 census, the population was 77,230 and a population density of 15 people per km². After 9 years in 2019 county had an estimated population of 86,878 inhabitants. Its county seat is Twin Falls. The county was created 119 years ago in 1907.

Twin Falls County locator map — Location of Twin Falls County on Idaho map.

County Snapshot

Twin Falls County at a glance

Twin Falls County currently has 8 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.

Browse county places

Mapped populated places

These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.

Idaho counties

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Largest city

Twin Falls

Population 50,197

Quick Facts about Twin Falls County

Population	86,878 (2019)
Country	United States of America
State	Idaho (United States)
Area	4995 km²
Water as percent of area	0.4%
Land as percent of area	99.6%
Latitude & Longitude	42.3560,-114.6672
Named for	Twin Falls
Altitude	4,537 feet / 1383 meters
Capital	Twin Falls
Establishment	February 21, 1907
Time Zone	America/Boise
Local time	16:52:10 (18th April 2026)
Density	17 Pop. per km² as of 2019
Population growth	11.11% (2010-2019)
Weather	24℉ Mostly Clear 7-days weather

Oregon Trail Wayside 2016-10-13 2336 image

Geography

Twin Falls County is located at 42°21'22"N 114°40'2"W (42.3559800, -114.6671600). It has 2 neighbors: Gooding County and Jerome County.

Twin Falls County map

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The largest city of Twin Falls County is Twin Falls with a population of 50,197. Other cities include, Buhl population 4,507, Kimberly population 4,054, Filer population 2,931 and Hansen population 1,284. See all Twin Falls County cities & populated places.

Twin Falls County Populated Places

Cities, towns, neighborhoods & other populated places in Twin Falls County.

City Name	Population	Title
Twin Falls	50,197	The most populous city in Twin Falls County, Idaho.
Buhl	4,507	City in Twin Falls County, Idaho, United States
Kimberly	4,054	City in Twin Falls County, Idaho, United States of America
Filer	2,931	City in Twin Falls County, Idaho, United States
Hansen	1,284	City in Twin Falls County, Idaho, United States
Hollister	309	City in Idaho
Castleford	250	City in Twin Falls County, Idaho, United States
Murtaugh	172	City in Twin Falls County, Idaho, United States

Weather

24°F

Mostly Clear

6 to 13 mph WSW Friday Night

Mostly clear, with a low around 24. West southwest wind 6 to 13 mph, with gusts as high as 22 mph.

7-Day Forecast

Official website of Twin Falls County

Official Website

Twin Falls County has 2 neighbours.

Gooding County county in Idaho, United States
Jerome County county in Idaho, United States

Twin Falls

Demographics

The population of Twin Falls County increased by 11.11% in 9 years.

Year	Population	% Change	Method
2010	77,230	-	census
2011	78,100	1.11%	estimation process
2012	78,550	0.57%	estimation process
2013	79,894	1.68%	estimation process
2014	80,986	1.35%	estimation process
2015	82,245	1.53%	estimation process
2016	83,819	1.88%	estimation process
2017	85,374	1.82%	estimation process
2018	86,029	0.76%	estimation process
2019	86,878	0.98%	estimation process

Comitatul Twin Falls, Comte de Twin Falls, Comté de Twin Falls, Condado de Twin Falls, Condado han Twin Falls, Contea di Twin Falls, Hrabstwo Twin Falls, Okrug Tvin Fols, Quan Twin Falls, Quận Twin Falls, Tuin Fols, Tuin-Fols, Tvin-Folls, Twin Falls, Twin Falls Kun, Twin Falls Kūn, Twin Falls konderria, Twin Falls megye, mqatʿt twyn fwlz, shhrstan twyn fals aydahw, te wen fu er si xian, tsuinforuzu jun, turaina phalasa ka'unti, Округ Твин Фолс, Твін-Фоллс, Туин Фолс, Туин-Фолс, Թվին Ֆոլս շրջան, شهرستان توین فالس، آیداهو, مقاطعة توين فولز, ٹوئن فالز کاؤنٹی، ایڈاہو, ٹون فالز کاؤنٹی، اڈاہو, টুৱিন ফলস কাউন্টি, ツインフォールズ郡, 特溫福爾斯縣

People born in Twin Falls County (1)

Jones, Kelly, 1948- Kelly Jones was born in Twin Falls County

Idaho Other Counties (more counties)

County Name	Population	Title
Ada County	481,587	County in Idaho, United States
Canyon County	229,849	County in Idaho, United States
Boise	228,959	The capital of Idaho.
Kootenai County	165,697	County in Idaho, United States
Bonneville County	119,062	County in Idaho, United States
Meridian	114,161	The most populous city in Ada County, Idaho.
Nampa	99,277	The most populous city in Canyon County, Idaho.
Bannock County	87,808	County in Idaho, United States
Idaho Falls	62,888	The most populous city in Bonneville County, Idaho.
Caldwell	58,481	The most populous city in Canyon County, Idaho.
Pocatello	56,637	The most populous city in Bannock County, Idaho.
Coeur d'Alene	52,414	A city in Kootenai County, Idaho.
Twin Falls	50,197	The most populous city in Twin Falls County, Idaho.
Bingham County	46,811	County in Idaho, United States
Bonner County	45,739	County in Idaho, United States
Nez Perce County	40,408	County in Idaho, United States