Twin Falls County, Idaho Population 2021

Twin Falls County, Idaho's estimated population is 88,576 with a growth rate of 0.97% in the past year according to the most recent United States census data. Twin Falls County, Idaho is the 7th largest county in Idaho. The 2010 Population was 77,545 and has seen a growth of 14.23% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Growth Rate
202188,5768490.97%
202087,7278490.98%
201986,8788490.99%
201886,0296550.77%
201785,3741,5551.86%
201683,8191,5741.91%
201582,2451,2591.55%
201480,9861,0921.37%
201379,8941,3441.71%
201278,5504500.58%
201178,1005550.72%
201077,54523,96544.73%
199053,5806531.23%
198052,92711,12026.60%
197041,807-35-0.08%
196041,8428632.11%
195040,9794,57612.57%
194036,4036,57522.04%
193029,8281,4305.04%
192028,39814,855109.69%
191013,5430.00%
2021 Growth Rate
0.97%
County Website
State
Founded
February 21, 1907
County Seat
2010 Population
77,545
Growth Since 2010
14.23%
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Twin Falls County, Idaho Population Growth

Population by Race

Race Population Percentage
White77,94491.84%
Some Other Race2,4022.83%
Two or More Races1,6221.91%
Asian1,5621.84%
Black or African American6890.81%
American Indian and Alaska Native6050.71%
Native Hawaiian and Other Pacific Islander450.05%
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Twin Falls County, Idaho Population by Race

Twin Falls County, Idaho Population Pyramid $2021

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Twin Falls County, Idaho Median Age

34.7


Total

34.3


Male

35.2


Female

Twin Falls County, Idaho Adults

There are 61,327 adults, (12,788 of whom are seniors) in Twin Falls County, Idaho.

Twin Falls County, Idaho Age Dependency

74.8

Age Dependency Ratio

26.3

Old Age Dependency Ratio

48.5

Child Dependency Ratio

Twin Falls County, Idaho Sex Ratio

Female

43,074

50.75%

Male

41,795

49.25%

Twin Falls County, Idaho Population by Age

Twin Falls County, Idaho Renter vs Owner Occupied by Household Type

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Twin Falls County, Idaho Household Types

Type Owner Renter
Married81.7%18.3%
All68.9%31.1%
Non Family56.4%43.6%
Male47.8%52.2%
Female47%53%

68.9%

Rate of Home Ownership

Twin Falls County, Idaho Households and Families

Type Count Average Size Owned
All31,1462.6968.9
Married16,9753.3381.7
Non Family9,5661.2756.4
Female3,0653.2447
Male1,5403.3547.8

3.23

Average Family Size

2.69

Average Household Size

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Twin Falls County, Idaho Households by Type

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Education Attained Count Percentage
Less Than 9th Grade2,9805.52%
9th to 12th Grade3,9937.39%
High School Graduate14,68227.17%
Some College14,46626.77%
Associates Degree6,76412.52%
Bachelors Degree6,96012.88%
Graduate Degree4,1867.75%
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Twin Falls County, Idaho Educational Attainment by Sex (over 25)

Twin Falls County, Idaho Educational Attainment by Race

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Race Total High School Bachelors
White45,09341,05010,190
Hispanic6,8584,115529
Other Race1,27768663
Asian910804200
2+ Races638586135
Native American47839671
Black26526548
Islander4545

The highest rate of high school graduation is among black people with a rate of 100.00%.

The highest rate of bachelors degrees is among white people with a rate of 22.60%.

Twin Falls County, Idaho Educational Attainment by Race

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Name Average Male Female
Overall$33,407$41,953$25,110
Less Than 9th Grade$26,173$31,216$17,340
High School Graduate$31,367$38,073$23,226
Some College$31,622$42,955$24,215
Bachelors Degree$41,708$56,392$34,401
Graduate Degree$56,513$76,406$47,161

$33,407

Average Earnings

$41,953

Average Male

$25,110

Average Female

Twin Falls County, Idaho Earnings by Educational Attainment

Twin Falls County, Idaho Language by Age

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Twin Falls County, Idaho Language

85.56% of Twin Falls County, Idaho residents speak only English, while 14.44% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 10.30% of the population.

Twin Falls County, Idaho Language

Twin Falls County, Idaho Poverty by Race

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Name Total In Poverty Poverty Rate
White66,2017,90111.93%
Hispanic13,6893,30724.16%
Other2,39977932.47%
Black65636555.64%
Multiple1,59226116.39%
Asian1,56225816.52%
Native583254.29%

14.31%

Overall Poverty Rate

13.90%

Male Poverty Rate

14.70%

Female Poverty Rate

Poverty in Twin Falls County, Idaho

The race most likely to be in poverty in Twin Falls County, Idaho is Black, with 55.64% below the poverty level.

The race least likely to be in poverty in Twin Falls County, Idaho is Native, with 4.29% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 3.83%. Among those working part-time, it was 18.50%, and for those that did not work, the poverty rate was 21.05%.

Twin Falls County, Idaho Poverty

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Name Poverty
Less Than 9th Grade19.42%
High School14.31%
Some College11.07%
Bachelors or Greater4.46%

Twin Falls County, Idaho Poverty Rate by Education

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Rate Poverty
Female Unemployed31.99%
Female Employed10.31%
Male Unemployed7.42%
Male Employed6.62%

Twin Falls County, Idaho Poverty Rate by Employment Status and Sex

Twin Falls County, Idaho Income by Household Type

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Name Median Mean
Households$52,919$67,867
Families$62,475$80,153
Married Families$69,217$86,889
Non Families$30,400$36,763
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Income by Household Type

Twin Falls County, Idaho Marital Status

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Marriage Rates

55.2%

Overall Marriage Rate

55.9%

Male Marriage Rate

54.5%

Female Marriage Rate

Twin Falls County, Idaho Married by Age and Sex

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Twin Falls County, Idaho Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 55-64.

Twin Falls County, Idaho Marital Status by Race

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Twin Falls County, Idaho Marital Status

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5,647

Number of Veterans

5,202

Male Veterans

445

Female Veterans

War Veterans
Vietnam1,833
First Gulf War1,341
Second Gulf War1,002
Korea528
World War II159

Twin Falls County, Idaho Veterans by War

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Age Group Veterans
35 to 541,648
75+1,387
65 to 741,354
55 to 64817
18 to 34441

Twin Falls County, Idaho Veterans by Age

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Name Veterans % of Total
White5,4159.52%
Hispanic3994.63%
Asian847.65%
2+ Races556.57%
Other Race463.04%
Native American468.58%
Black10.29%

Twin Falls County, Idaho Veterans by Race

Twin Falls County, Idaho Veterans by Education

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8.03%

Veteran Poverty Rate

28.46%

Veteran Disability Rate

Twin Falls County, Idaho Veterans by Education

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65.3%

Labor Force Participation

63.1%

Employment Rate

3.3%

Unemployment Rate

Twin Falls County, Idaho Employment by Age

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Twin Falls County, Idaho Employment by Race

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Twin Falls County, Idaho Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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53.68%

Born in Twin Falls County, Idaho

91.02%

Native Born

8.98%

Foreign Born

5.91%

Non Citizen

3.07%

Naturalized

Place of Birth

91.02% of Twin Falls County, Idaho residents were born in the United States, with 53.68% having been born in Idaho. 5.91% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Twin Falls County, Idaho Place of Birth

  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990

Sources