County · Idaho

Twin Falls County, Idaho

Twin Falls County, Idaho. Twin Falls County had 97,539 residents in 2025 by the Census Bureau's estimate, up 8.3% since 2020, slower than Idaho (+10.4%). It holds 8 places (8 cities, villages and boroughs) and 17 census tracts. GEOID 16083.

Twin Falls County is one of the 2 counties of the Twin Falls, ID metropolitan statistical area (the Census Bureau's July 2023 delineation).

Residents, July 2025 estimate

97,539

Census Bureau estimate (no margin published)
2020 Census count: 90,046 · ACS 2020-2024: 93,734

Median household income

$67,409

±$3,701 (90% margin)
Idaho: $77,800

Median home value

$337,900

±$8,873 (90% margin)
Idaho: $418,600

Median gross rent

$1,089

±$35 (90% margin)
Idaho: $1,238

How many people live in Twin Falls County, and is it growing?

The 2020 Census counted 90,046 residents in Twin Falls County. The Census Bureau estimates 97,539 for July 1, 2025, up 8.3% since 2020, slower than Idaho (+10.4%). The 2020-2024 American Community Survey puts the population at 93,734 over 1,922 square miles of land.

July 2020→2021 +2,017 (92,382)
2021→2022 +1,508 (93,890)
2022→2023 +1,502 (95,392)
2023→2024 +1,075 (96,467)
2024→2025 +1,072 (97,539)

Twin Falls County in Idaho. Boundaries: Census Bureau 2024.

Counts, ACS 2020-2024 5-year estimates, with the change from 2015-2019
Measure	Twin Falls County	Idaho	Change since 2015-2019
Total population	93,734	1,934,262	+8,865
Households	34,754±360	713,005	+3,608
Average household size	2.65±0.03	2.64	no clear change
Housing units	36,429±72	795,014	+3,147

Twin Falls County's population since 2000

From 64,284 in 2000 to 97,539 in 2025: up 51.7%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.

2000 Census 64,284
2005 (estimate) 69,833
2010 Census 77,230
2015 (estimate) 82,289
2020 Census 90,046
2025 (estimate) 97,539

Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov

What cities and towns are in Twin Falls County?

Twin Falls County holds 8 places: 8 cities, villages and boroughs (incorporated places). The largest is Twin Falls with 56,216 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.

Places in Twin Falls County, ACS 2020-2024 5-year estimates. Ring: estimate with a coefficient of variation over 40%.

Twin Falls	city	51,807	54,164±45	$61,205	$321,300	11.4%	100%
Kimberly	city	4,626	5,111±15	$97,799	$339,400	19.3%	100%
Buhl	city	4,558	4,673±33	$55,568	$247,500	7.6%	100%
Filer	city	2,738	2,925±30	$64,671	$247,500	5.1%	100%
Hansen	city	1,086	1,225±282	$50,083	$220,200	29.8%	100%
Hollister	city	243	347±145	$56,944	$156,300	10.7%	100%
CastlefordGEOID 1613240	city	215	183±71	$46,667	not published	20.2%	100%
MurtaughGEOID 1655900	city	114	129±55	$48,750	$253,800	10.4%	100%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov

Who lives in Twin Falls County?

The median resident of Twin Falls County is 36.1 years old; 26.3% are under 18 and 16.6% are 65 or older. The largest group is non-Hispanic white residents at 75.3%, then Hispanic or Latino residents (of any race) at 18.0%. 8.5% of residents were born outside the United States.

Age, origin and education, ACS 2020-2024 5-year estimates. Race groups are non-Hispanic; Hispanic includes any race.
Measure	Twin Falls County	Idaho	Change since 2015-2019
Median age	36.1±0.3	37.3	+1.4
Under 18 years	26.3%±0.1 pts	24.1%	–
65 years and over	16.6%±0.1 pts	17.0%	–
Hispanic or Latino (any race)	18.0%	13.6%	+1.6 pts
White alone, not Hispanic	75.3%±0.7 pts	78.6%	−3.7 pts
Black or African American alone, not Hispanic	0.8%±0.2 pts	0.7%	no clear change
Asian alone, not Hispanic	1.1%±0.2 pts	1.3%	−0.6 pts
American Indian and Alaska Native alone, not Hispanic	0.3%±0.1 pts	0.7%	–
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0.3%±0.1 pts	0.1%	–
Two or more races, not Hispanic	3.7%±0.7 pts	4.2%	–
Some other race alone, not Hispanic	0.5%±0.3 pts	0.6%	–
Born outside the United States	8.5%±0.9 pts	5.9%	no clear change
Speak a language other than English at home (age 5+)	14.9%±1.4 pts	11.0%	–
Civilian veterans (age 18+)	7.4%±0.8 pts	8.0%	–
With a disability	14.4%±1.1 pts	14.1%	–
No health insurance coverage	10.2%±1.3 pts	9.1%	−1.8 pts
High school graduate or higher (age 25+)	89.3%±1.2 pts	91.9%	–
Bachelor's degree or higher (age 25+)	23.5%±1.8 pts	31.8%	+2.9 pts
Graduate or professional degree (age 25+)	8.4%±1.1 pts	10.5%	–
Moved from another state in the past year	3.0%±1.0 pts	4.6%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov

What do households in Twin Falls County earn?

Half of Twin Falls County's 34,754 households earn less than $67,409 a year (±$3,701), against $77,800 in Idaho. In 2015-2019 it was $65,127 in 2024 dollars; the margins of error cannot tell the two periods apart. 11.5% of residents live below the poverty line.

Income and poverty in 2024 dollars, ACS 2020-2024 5-year estimates
Measure	Twin Falls County	Idaho	Change since 2015-2019
Median household income	$67,409±$3,701	$77,800	no clear change
Mean household income	$90,415±$4,261	$102,747	–
Per capita income	$35,344±$1,840	$38,952	+$4,143
People below the poverty line	11.5%±1.5 pts	10.6%	−2.8 pts
Children under 18 below the poverty line	16.5%±3.1 pts	12.4%	no clear change
Households receiving SNAP	9.6%±1.4 pts	7.6%	–
Households with a broadband subscription	91.1%±1.4 pts	91.9%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What does housing cost in Twin Falls County?

Owners occupy 70.5% of Twin Falls County's occupied homes and renters 29.5%. The median owner-occupied home is valued at $337,900 by its owner (±$8,873). The median renter pays $1,089 a month including utilities, and 39.6% of renters pay 35% or more of their income on rent.

Housing, ACS 2020-2024 5-year estimates
Measure	Twin Falls County	Idaho	Change since 2015-2019
Median home value (owner-occupied)	$337,900±$8,873	$418,600	+$132,620
Median gross rent	$1,089±$35	$1,238	+$104
Renters paying 35% or more of income on rent	39.6%±4.6 pts	36.9%	no clear change
Median monthly owner costs, with a mortgage	$1,530±$69	$1,687	–
Owner-occupied homes	70.5%±1.9 pts	72.1%	no clear change
Housing units	36,429±72	795,014	+3,147
Homeowner vacancy rate	0.4%±0.4 pts	0.7%	–
Rental vacancy rate	3.4%±1.3 pts	3.9%	–
Single-family detached homes	75.3%±2.0 pts	73.8%	–
Mobile homes	7.1%±1.0 pts	6.9%	–
Built 2020 or later	3.0%±0.7 pts	3.9%	–
Built 1939 or earlier	11.5%±1.3 pts	7.9%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov

How many new homes is Twin Falls County building?

Builders took permits for 527 new housing units across Twin Falls County in 2025 (501 single-family), 5.4 per 1,000 residents.

2019 749 units
2020 959 units
2021 899 units
2022 518 units
2023 380 units
2024 634 units
2025 527 units

Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey

How do people in Twin Falls County get to work?

79.0% of Twin Falls County's workers drive alone and 7.4% work from home. The average trip to work takes 17.8 minutes. The unemployment rate in 2020-2024 averaged 3.0%.

Work and commuting, ACS 2020-2024 5-year estimates
Measure	Twin Falls County	Idaho	Change since 2015-2019
In the labor force (age 16+)	64.6%±1.2 pts	63.0%	–
Unemployment rate	3.0%±0.9 pts	3.7%	no clear change
Drove alone to work	79.0%±1.7 pts	72.7%	–
Carpooled	10.9%±1.4 pts	8.9%	–
Public transportation	0.0%±0.1 pts	0.5%	–
Walked	1.0%±0.3 pts	2.6%	–
Worked from home	7.4%±1.1 pts	13.3%	+2.3 pts
Mean travel time to work	17.8 min±0.8	21.6 min	no clear change

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What are Twin Falls County's census tracts?

Twin Falls County is divided into 17 census tracts. Among those with a reliable estimate, median household income runs from $44,938 (Tract 8) to $99,921 (Tract 13.01).

Census tracts of Twin Falls County, ACS 2020-2024 5-year estimates; sort by any column

Tract 216083000200	Twin Falls (96%)	7,519	7,516±714	$79,286	$376,900	$1,057	6.2%
Tract 316083000300	Buhl (6%)	5,906	5,805±753	$70,543	$428,800	$981	11.2%
Tract 416083000400	Buhl (87%)	4,291	4,641±559	$67,128	$256,500	$965	8.3%
Tract 516083000500	Filer (31%)	6,587	6,602±523	$72,011	$332,100	$1,281	5.1%
Tract 616083000600	Twin Falls (8%)	3,274	3,408±525	$90,168	$496,900	$1,133	9.6%
Tract 7.0116083000701	Twin Falls (67%)	11,083	11,119±1,101	$68,575	$401,000	$1,189	11.1%
Tract 7.0216083000702	Twin Falls	4,531	5,019±606	$61,025	$318,700	$1,167	8.6%
Tract 816083000800	Twin Falls (99%)	6,433	6,941±835	$44,938	$253,600	$1,011	13.1%
Tract 916083000900	Twin Falls (73%)	5,069	5,485±650	$89,750	$445,900	$1,225	4.1%
Tract 10.0116083001001	Twin Falls (99%)	4,763	4,913±555	$70,341	$330,700	$1,519	13.2%
Tract 10.0216083001002	Twin Falls (91%)	4,378	4,590±793	$54,375	$236,900	$1,057	15.3%
Tract 1116083001100	Twin Falls	3,390	3,888±489	$46,652	$229,800	$1,064	19.1%
Tract 12.0116083001201	Twin Falls (88%)	4,145	4,296±618	$54,884	$310,500	$789	22.3%
Tract 12.0216083001202	Twin Falls (84%)	4,845	5,132±710	$67,500	$289,600	$1,149	9.0%
Tract 13.0116083001301	Kimberly (66%)	7,292	8,203±653	$99,921	$392,700	$1,134	15.6%
Tract 13.0216083001302	Hansen (38%)	2,384	2,135±354	$56,953	$313,400	$844	21.2%
Tract 1616083001600	Murtaugh (2%)	4,156	4,041±512	$70,926	$360,000	$975	14.1%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov

How does Twin Falls County compare with Idaho's other counties?

Twin Falls County's rank among Idaho's counties with a reliable estimate (1 = highest)
Measure	Rank
Population	5th of 44
Growth 2020-2025	22nd of 44
Residents per square mile	9th of 44
Median household income	23rd of 44
Median home value	20th of 44
Median gross rent	11th of 44
Poverty rate	24th of 43
Bachelor's degree or higher	20th of 44
Median age	30th of 44

Every county in Idaho

Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections

Not on this page: crime, weather and schools for Twin Falls County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.