Twin Falls, ID

City in Twin Falls County, ID, US

By Neilsberg Research

Last updated May 1, 2026

Key Indicators

A quick look at key numbers

Population

54,164

Source: U.S. Census Bureau American Community Survey (ACS) 2020-2024 5-Year Estimates

Median Age

35.1

years ∙ half population younger than 35.1, half older

Diversity Index

42%

chance two random people differ in race and ethnicity

Nativity

8.5%

foreign-born population

91.5%Native

8.5% Foreign-born

Geographic Context

Location, size, and surroundings

About

Twin Falls is a city within Twin Falls County, Idaho, United States.

Location

City in Twin Falls County, ID, US

Co-ordinates

DEC42.563807° N, 114.460597° W

DMS42° 33′ 49.71″ N, 114° 27′ 38.15″ W

Population Density & area

2,722/sq mi (1,054/km²)

Total Area

20 sq mi (51.7 km²)

Land Area

19.9 sq mi (51.4 km²) · 99.41%

Water Area

0.1 sq mi (0.3 km²) · 0.59%

Demographics & Living

Who lives here, how households are formed, and community composition

Population Composition

Key characteristics of the population

Sex Distribution

49.7% male

Male 49.7%

Female 50.3%

males per 100 females

Twin Falls 98.7

Twin Falls County 98.5

Idaho 101.3

Nativity

8.5%

foreign-born population

91.5%Native

8.5% Foreign-born

% Foreign-born

Twin Falls 8.5%

Twin Falls County 8.5%

Idaho 5.9%

Age Distribution

How the population is spread across age groups

Median Age

35.1

years ∙ half population younger than 35.1, half older

Twin Falls

35.1

Twin Falls County

36.1

Idaho

37.3

Dependency ratio

71.3

dependents per 100 working-age adults

Twin Falls 71.3

Twin Falls County 75.2

Idaho 69.8

AGE DISTRIBUTION

Distribution of age group

Median age

	Twin Falls	Twin Falls County	Idaho
Age Group
Children (Under 18)	25.1%	26.3%	24.1%
Working age (18-64)	58.3%	57.1%	58.9%
Senior (65+)	16.6%	16.6%	17%
Dependency ratio
Total dependency ratio	71.3	75.2	69.8
Child dependency ratio	42.9	46.1	40.9
Old-age dependency ratio	28.4	29.1	28.8

Racial & Ethnic Composition

Racial and ethnic makeup and how it compares

Race & Ethnicity

White

74%

Black

1.2%

Asian

1.9%

Hispanic

17.3%

Other

5.6%

Note: White, Black, and Asian refer to individuals belonging to a single race and not of Hispanic origin. Hispanics may be of any race.

Diversity Index

42%

chance two random people differ in race and ethnicity

Twin Falls 42%

Twin Falls County 39.9%

Idaho 36.2%

Note: The Diversity Index (DI), based on the Blau Index, measures the probability that two randomly selected individuals differ in race and ethnicity. Values range from 0 (no diversity) to 1 (high diversity) and are shown as percentages.

RACIAL & ETHNIC COMPOSITION

Race & Ethnicity

Percentage of Twin Falls population

	Twin Falls	Twin Falls County	Idaho
Hispanic or Latino	17.3%	18%	13.6%
Mexican	14.8%	15.3%	11%
Puerto Rican	0.1%	0.1%	0.3%
Cuban	0%	0%	0.1%
Other Hispanic / Latino	2.3%	2.6%	2.3%
Not Hispanic or Latino	82.7%	82%	86.4%
One race	78.5%	78.3%	82.2%
White	74%	75.3%	78.6%
Black or African American	1.2%	0.8%	0.7%
American Indian and Alaska Native	0.3%	0.3%	0.7%
Asian	1.9%	1.1%	1.3%
Native Hawaiian and Other Pacific Islander	0.5%	0.3%	0.1%
Some Other Race	0.5%	0.5%	0.6%
Two or more races (Multiracial)	4.2%	3.7%	4.2%

Household & Families Composition

Household size, type, and family structure

Household structure

66% family

Family 66%

Non family 34%

% family households

Twin Falls 66%

Twin Falls County 70.3%

Idaho 68.5%

Average household size

2.54

persons per household

Twin Falls

2.54

Twin Falls County

2.65

Idaho

2.64

Household & Family COMPOSITION

Households

Percentage of Twin Falls population

	Twin Falls	Twin Falls County	Idaho
Total households	20,828	34,754	713,005
Average houshold size	2.54	2.65	2.64
Family households	13,756	24,427	488,374
Average family size	3.12	3.16	3.16
Married couple family	9,958	18,465	392,938
Other families	3,798	5,962	95,436
Male householder	1,415	2,151	33,551
Female householder	2,383	3,811	61,885
Non-family households	7,072	10,327	224,631
One-person households	6,114	8,846	173,906
Male householder	2,484	3,730	81,328
Senior (65+) living alone	892	1,394	28,911
Female householder	3,630	5,116	92,578
Senior (65+) living alone	1,889	2,830	49,029
Other living arrangements	958	1,481	50,725

Housing Profile

Housing stock, ownership, rentals, and cost burdens

Total housing units

21,838

housing units

Twin Falls 21,838

Twin Falls County 36,429

Idaho 795,014

Occupancy status

95.4% occupied

Occupied 95.4%

Vacant 4.6%

vacancy rate

Twin Falls 4.6%

Twin Falls County 4.6%

Idaho 10.3%

Housing Characteristics

How the housing supply is structured and used

Types of Housing unit

75.4%

Single family houses

75.4%

Apartments in multi-unit structures

20.4%

Mobile homes

4.1%

Boat, RV, van, etc

0.1%

Median Year Built

1983

Half of houses were built before 1983, and half after.

Historic ∙ 1939 or earlier

10.6%

Postwar & mid-century ∙ 1940 - 1969

20.8%

Late 20th century ∙ 1970 - 1999

35.9%

Modern ∙ 2000 or later

32.9%

Note: Median year built reflects occupied units only; distribution includes all units.

Housing Characteristics

Units, rooms & bedrooms

Physical characteristics of housing units

	Twin Falls	Twin Falls County	Idaho
Rooms per unit
Median rooms	5.5	5.8	5.9
1–3 rooms	12.7%	8.9%	10.8%
4–6 rooms	55.3%	52.7%	49.9%
7+ rooms	32%	38.4%	39.2%
Bedrooms
No bedroom / studio	2.8%	1.8%	1.9%
1 bedroom	7.1%	5.2%	6.5%
2 bedrooms	25.8%	23.1%	21.7%
3 bedrooms	39%	41.2%	40.9%
4+ bedrooms	25.3%	28.7%	28.9%
At a glance
Median year built	1983	1982	1992
Total housing units	21,838	36,429	795,014

Occupancy Profile

Who is inside and how they use it

Homeownership

64.1% owners

Renter-occupied 35.9%

Owner-occupied 64.1%

homeownership rate

Twin Falls 64.1%

Twin Falls County 70.5%

Idaho 72.1%

Average household size

2.73

Owner-occupied

2.19

Renter-occupied

owner-occupied average size

Twin Falls 2.73

Twin Falls County 2.75

Idaho 2.73

Housing Characteristics

Occupied unit characteristics

Tenure, crowding, and utilities

	Twin Falls	Twin Falls County	Idaho
Total occupied units	20,828	34,754	713,005
Year moved in
2020 or later	28.9%	25%	26.4%
2010 to 2019	44.7%	43.9%	43.2%
2000 to 2009	14.7%	16.4%	15.1%
1999 or earlier	11.8%	14.7%	15.4%
Occupants per room
1.00 or fewer	97.5%	96.9%	96.9%
1.01 to 1.50	1.7%	2.2%	2.3%
1.51 or more	0.9%	0.9%	0.8%
Vehicles availability
No vehicles	3.7%	2.9%	3.7%
1 vehicle	35.8%	29.5%	24.1%
2 vehicles	35.8%	35.9%	39.4%
3 or more vehicles	24.7%	31.8%	32.9%
House heating fuel used
Gas	68.8%	58.1%	56.9%
Electricity	29.7%	36.9%	35.2%
Solar	0.1%	0.3%	0.2%
Fuel oil, kerosene etc	0.1%	1.5%	1.2%
All other fuels	0.7%	2.9%	6.1%
No fuel used	0.6%	0.4%	0.4%
Selected characteristics
Lacking complete plumbing	0.2%	0.2%	0.4%
Lacking complete kitchen	0.8%	0.5%	0.8%
No telephone service available	0.6%	0.6%	0.9%

Housing Value

What owner-occupied units are worth

Median home value

$321,300

owner-occupied units

Median value(USD)

Twin Falls

$321,300

Twin Falls County

$337,900

Idaho

$418,600

Housing Cost Burden

29.3%

of homeowners with a mortgage are cost-burdened

% Cost-Burdened Households

Owners with a mortgage

29.3%

Owners without a mortgage

Renters

53.6%

Note: Households spending 30% or more of their income on housing costs are considered cost-burdened.

Financial characteristics

Property value and housing costs

Tenure, crowding, and utilities

	Twin Falls	Twin Falls County	Idaho
Property value
Median Value	$321,300	$337,900	$418,600
Under $100,000	6.9%	8.3%	6.7%
$100,000 - $200,000	10.3%	10.8%	7.5%
$200,000 - $300,000	26.8%	22.2%	13.7%
$300,000 - $500,000	45%	38.6%	36.9%
$500,000 - $1,000,000	10.7%	17.7%	29.3%
$1,000,000 and more	0.3%	2.3%	5.8%
Owner-occupied households
With a mortgage	65.7%	62.9%	62.2%
Without a mortgage	34.3%	37.1%	37.8%
Median monthly owner costs
With a mortgage	$1,493	$1,530	$1,687
Without a mortgage	$474	$502	$493
Gross rent
Median rent	$1,082	$1,089	$1,238

Education Profile

How educated is the community and how education pays off

Adults with a college degree

24.5%

of adults 25+ with a bachelor's degree or higher

Twin Falls 24.5%

Twin Falls County 23.5%

Idaho 31.8%

Adults without a high school diploma

9.5%

of adults (25+) without a high school diploma

Twin Falls 9.5%

Twin Falls County 10.7%

Idaho 8.2%

School Enrollment

Who is enrolled in school and at what level

School enrollment

13,402

population (age 3+) enrolled in school

Nursery / Preschool

5.2%

K–12

75.2%

College / Undergraduate

15.9%

Graduate / Professional

3.7%

College-going rate (18-24 yr olds)

23.2%

of 18-24-year-olds in college or graduate school

Twin Falls

23.2%

Twin Falls County

22.4%

Idaho

37.7%

Enrollment & school type

Enrollment levels, college-going rate, and public vs private school split

Population 3+ currently enrolled in a school

	Twin Falls	Twin Falls County	Idaho
Total enrolled (age 3+)	13,402	23,171	492,784
Nursery / preschool	5.2%	5%	5%
K–12	75.2%	78.2%	70.3%
Kindergarten	5.2%	4.5%	4.8%
Elementary: Grades 1–4	23.9%	23%	20.7%
Elementary: Grades 5–8	24.2%	26.9%	22.5%
High School: Grades 9–12	21.8%	23.8%	22.4%
College or graduate school	19.6%	16.8%	24.7%
College, undergraduate	15.9%	13.8%	20.8%
Graduate, professional school	3.7%	3%	4%
College-going rate · 18-24 yr olds	23.2%	22.4%	37.7%
School type
Public school	88.1%	88%	81.1%
Private school	11.9%	12%	18.9%

Education Attainment by Level & Gender

What is the highest level of education completed among adults

Education attainment

35,278

population 25 years and over

Total adults (25+)

Less than 9th grade

3.8%

9th-12th, no diploma

5.7%

HS graduate

30%

Some college no degree

24.2%

Associates degree

11.9%

Bachelors degree

16.4%

Graduate or professional degree

Attainment by gender

Male vs Female

Adults (25+) · Share within each education level

% male · % female

Less than 9th grade

42.4% · 57.6%

9th-12th, no diploma

47.9% · 52.1%

HS graduate

51.1% · 48.9%

Some college no degree

52.7% · 47.3%

Associates degree

41.2% · 58.8%

Bachelors degree

42.7% · 57.3%

Graduate or professional degree

50.3% · 49.7%

Educational Attainment Overview

Distribution and key education attainment rates for adults (25+)

Highest credential completed · adults 25+

	Twin Falls	Twin Falls County	Idaho
Population (25+)	35,278	60,892	1,278,185
Less than 9th grade	3.8%	4.5%	3.2%
9th–12th, no diploma	5.7%	6.2%	5%
High school diploma or GED	30%	29.5%	26.1%
Some college, no degree	24.2%	23.7%	24.2%
Associate's degree	11.9%	12.5%	9.7%
Bachelor's degree or higher	24.5%	23.5%	31.8%
Bachelor's degree	16.4%	15.1%	21.3%
Graduate or professional	8%	8.4%	10.5%
High School or higher	90.5%	89.3%	91.9%

Earnings by education level

percentage as applicable

Median Earnings

$41,297

Median earnings for adults 25+, by level

Less than HS graduate

$31,034

HS graduate

$38,156

Some college or associates

$39,596

Bachelors degree

$52,073

Graduate or professional degree

$60,271

Poverty Rate

3.3%

for ages 25+, with bachelors degree or higher

Less than HS graduate

23.9%

HS graduate

11.2%

Some college or associates

8.8%

Bachelors degree or higher

3.3%

Outcomes by Education Level

Earnings and poverty rates across education levels (25+)

Adults 25+

	Twin Falls	Twin Falls County	Idaho
Median earnings
Population 25+, with earnings	$41,297	$42,787	$47,428
Less than high school graduate	$31,034	$34,138	$35,526
High school graduate (includes equivalency)	$38,156	$37,785	$39,186
Some college or associate's degree	$39,596	$41,358	$43,363
Bachelor's degree	$52,073	$53,360	$58,289
Graduate or professional degree	$60,271	$62,343	$79,351
Poverty rates
Less than high school graduate	23.9%	18%	18%
High school graduate (includes equivalency)	11.2%	12.2%	12%
Some college or associate's degree	8.8%	8.3%	8.3%
Bachelor's degree or higher	3.3%	3.5%	4.5%

Insights for Twin Falls, by topic

Income By year By race By age By gender

Population By year By race By age By gender

About Neilsberg Research

Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.

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