Twin Falls County, Idaho Population 2026

Updated April 2026 · US Census ACS 2023 5-Year Estimates · 5th-largest in Idaho

The population of Twin Falls County, Idaho is 92,121 as of the 2023 American Community Survey, making it the 5th-largest county in Idaho. The median household income is $65,338, the median home value is $292,700, and the median age is 35.8.

The population of Twin Falls County has grown 24.5% since 2010 (77,547 → 96,509), a +1.57% annualized rate.

Twin Falls County within Idaho · Source: US Census TIGER/Line via us-atlas

92,121

Population

+1.57%

Annual growth

People / sq mi

$65,338

Median Income

$292,700

Median Home Value

Twin Falls County covers 1,922 sq mi of land at 47.9 people per square mile.

About Twin Falls County, ID

Age is the most distinctive thing about Twin Falls County: a median age of 35.8, younger than the national median. Twin Falls County is a county in Idaho with a population of 92,121. It is the #5-largest of all counties in Idaho nationally.

The typical household here earns about $65,338, below the US median of $78,538. Poverty runs at 8.0%, below the national 12.4%. The median home value is $292,700, with typical rent around $1,011.

Degree attainment is mid-range for US counties: 23.0% of adults hold a four-year degree, below the national 35.0%. Remote work is below the national 14.0% at 8.2%, and the average commute runs about 18 minutes each way.

Twin Falls County Population History (2010-2024)

The county of Twin Falls County had a population of 77,547 in 2010 and 96,509 in 2024, a 24.5% growth over 14 years. The peak was 96,509 in 2024. Average annual growth rate: 1.58%.

Twin Falls County population, 2010–2024 · Source: U.S. Census Bureau — decennial census & Population Estimates

96,509

Population (2024)

77,547

Population (2010)

96,509

Peak (2024)

1.58%

Avg Annual Growth

Year	Population	Change	Annual %	Source
2010	77,547	-	-	estimate
2011	78,108	+561	+0.72%	estimate
2012	78,564	+456	+0.58%	estimate
2013	79,919	+1,355	+1.72%	estimate
2014	81,019	+1,100	+1.38%	estimate
2015	82,289	+1,270	+1.57%	estimate
2016	83,847	+1,558	+1.89%	estimate
2017	85,439	+1,592	+1.90%	estimate
2018	86,166	+727	+0.85%	estimate
2019	87,127	+961	+1.12%	estimate
2020	90,374	+3,247	+3.73%	estimate
2021	92,410	+2,036	+2.25%	estimate
2022	93,973	+1,563	+1.69%	estimate
2023	95,404	+1,431	+1.52%	estimate
2024	96,509	+1,105	+1.16%	estimate

Race & Ethnicity

White	81.6%
Black or African American	0.9%
Asian	0.1%
Hispanic or Latino (any race)	2.3%
Two or More Races	0.0%

Age & Sex

35.8

Median Age

50.3%

Female

49.7%

Male

16.4%

Age 65+

Age Distribution

Under 5

6.4%

5–9

7.5%

10–14

8.0%

15–19

7.3%

20–24

6.1%

25–34

13.3%

35–44

13.1%

45–54

10.7%

55–59

5.3%

60–64

5.9%

65–74

9.7%

75–84

5.1%

85+

1.6%

Children (under 15): 21.9% · Seniors (65+): 16.4%

Income & Poverty

Median household income	$65,338$-9,298 vs state
Mean household income	$86,618
Per-capita income	$33,505
Poverty rate	8.0%+1.0% vs state
Unemployment rate	2.0%
Employment-to-population	61.7%

Top Industries by Employment

Professional & business services

21.8%

Manufacturing

11.7%

Education & health care

9.7%

Construction

7.5%

Agriculture

7.1%

Finance & real estate

7.0%

Retail trade

5.7%

Information

4.5%

The largest employment sector in Twin Falls County is professional & business services, accounting for 21.8% of workers.

How residents commute

0.1%

Drive alone

1.2%

Carpool

79.5%

Public transit

8.2%

Work from home

18.0 min

Avg commute

Housing

$292,700$-83,300 vs state

Median home value

$1,011

Median rent

69.6%

Homeownership rate

35,749

Total housing units

94.9%

Occupied

5.1%

Vacant

30.4%

Renter-occupied

Social & access

89.9%

With health insurance

95.2%

With broadband internet

37.2%

Foreign-born

7.6%

Veterans (18+)

14.0%

With a disability

85.4%

Speak language other than English at home

Education

88.7%

High School+

23.0%

Bachelor's+

Largest cities in Idaho

Boise City (235,701)Meridian (124,865)Nampa (106,289)Idaho Falls (66,672)Caldwell (63,465)Pocatello (57,152)Coeur d'Alene (55,558)Twin Falls (53,219)Post Falls (41,716)Rexburg (39,589)All Idaho cities →

Other counties in Idaho

Ada County (508,052)Canyon County (242,405)Kootenai County (177,736)Bonneville County (127,056)Bannock County (88,457)Madison County (53,578)Bonner County (49,456)Bingham County (48,993)Nez Perce County (42,477)Latah County (40,315)All Idaho counties →

Part of Idaho

Idaho demographic profile All Idaho data →

Metro areas in Idaho

Boise City (790,640)Coeur d'Alene (177,736)Idaho Falls (161,944)Logan (151,746)Twin Falls (116,909)Pocatello (88,457)Lewiston (64,901)All US metros →

County rankings

US Counties by Population Richest US Counties by Median Household Income Expensive US Counties by Home Value Educated US Counties Counties With Highest Poverty Rates Youngest US Counties by Median Age Oldest US Counties by Median Age Cheapest US Counties by Median Home Value Racially Diverse US Counties Counties With Largest Hispanic Population All rankings →

Frequently Asked Questions

Twin Falls County, Idaho has a population of 92,121 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 5th-largest county in Idaho. Population density is 48 people per square mile.

The population of Twin Falls County has grown 24.5% since 2010 (77,547 → 96,509), a +1.57% annualized rate.

The median household income in Twin Falls County, Idaho is $65,338, with mean (average) household income of $86,618 and per-capita income of $33,505. 8.0% of residents live below the federal poverty level.

In Twin Falls County, the largest racial and ethnic groups are White (81.6%), Hispanic or Latino (2.3%), Black or African American (0.9%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.

The median age in Twin Falls County, Idaho is 35.8 years. Residents are 50.3% female and 49.7% male.

The median home value in Twin Falls County is $292,700 and median monthly rent is $1,011. 69.6% of occupied housing units are owner-occupied. The county has 35,749 total housing units, 5.1% of which are vacant.

The largest employment sector in Twin Falls County, Idaho is professional, scientific, and management services, employing 21.8% of workers. The unemployment rate is 2.0%.

Boise City is among the largest cities associated with Twin Falls County, Idaho, with a population of 235,701.