Idaho County, Idaho Population 2024

18,143
05K10K15K20K18801900192019401960198020002020YearPopulation

Idaho County, Idaho's estimated 2024 population is 18,143 with a growth rate of 1.41% in the past year according to the most recent United States census data. Idaho County, Idaho is the 20th largest county in Idaho. The 2010 population was 16,311 and has seen a growth of 11.23% since that time.

Note: data after 2022 is projected based on recent change
Year
Population
Growth
Change
202919,4082531.32%
202819,1552531.34%
202718,9022531.36%
202618,6492531.38%
202518,3962531.39%
202418,1432531.41%
202317,8902531.43%
202217,6375783.39%
202117,0594652.8%
202016,594-29-0.17%
201916,6231540.94%
201816,469770.47%
201716,3921450.89%
201616,247-65-0.4%
201516,312270.17%
201416,285290.18%
201316,256-192-1.17%
201216,448-17-0.1%
201116,4651540.94%
201016,31100%
199013,783-986-6.68%
198014,7691,87814.57%
197012,891-651-4.81%
196013,5422,11918.55%
195011,423-1,268-9.99%
194012,6912,58425.57%
193010,107-1,642-13.98%
192011,749-635-5.13%
191012,3843,26335.77%
19009,1216,166208.66%
18902,95592445.49%
18802,0311,182139.22%
1870849-18,559-95.63%
2024 Growth Rate
1.41% (253)
County Website
Idaho County
State
Idaho
County Seat
Grangeville
2020 Population
16,594
Area
8477 mi²
Density
2 people/mi²
Growth Since 2020
9.33% (1,549)
Founded
February 4, 1864

Population by Race

Race
Population
Percentage (of total)
White15,68691.62%
Two or more races8054.7%
Native American3892.27%
Other race1390.81%
Asian850.5%
Black or African American160.09%
Native Hawaiian or Pacific Islander00%
91.62%Race

White

Two or more races

Native American

Other race

Asian

Black or African American

Native Hawaiian or Pacific Islander

Idaho County, Idaho Population by Race

Idaho County, Idaho Population Pyramid 2024

010203040506070801K900800700600500400300200100001002003004005006007008009001KMaleFemale

Idaho County, Idaho Median Age

49.6

Total

48.1

Male

51.6

Female

Idaho County, Idaho Adults

There are 13,735 adults, (4,895 of whom are seniors) in Idaho County, Idaho.

Idaho County, Idaho Age Dependency

93.7

Age Dependency Ratio

55.4

Old Age Dependency Ratio

38.3

Child Dependency Ratio

Idaho County, Idaho Sex Ratio

Female8,16747.7%
Male8,95352.3%

Idaho County, Idaho Population by Age

Idaho County, Idaho Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All6,5672.5180.119.9
Married3,9353.0185.614.4
Non Family2,0641.275.224.8
Female3924.0755.644.4
Male1763.3668.231.8

3.04

Average Family Size

2.51

Average Household Size

80.1%

Rate of Home Ownership

59.92%5.97%31.43%Households by Type

Married

Male

Female

NonFamily

MarriedAllNon FamilyMaleFemale00.10.20.30.40.50.60.70.80.91

owner

renter

Idaho County, Idaho Households and Families

Less Than 9th Grade9th to 12th GradeHigh School GraduateSome CollegeAssociates DegreeBachelors DegreeGraduate Degree05001K1.5K2K

Male

Female

Education Attained
Count
Percentage
9th to 12th Grade7585.96%
Associates Degree1,53012.04%
Bachelors Degree2,06416.24%
Graduate Degree7325.76%
High School Graduate4,33134.08%
Less Than 9th Grade2792.2%
Some College3,01623.73%
5.96%34.08%23.73%12.04%16.24%5.76%Over 25 Education

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Idaho County, Idaho Educational Attainment by Sex (over 25)

Idaho County, Idaho Educational Attainment by Race

AsianNative AmericanWhite2+ RacesOther RaceHispanicBlack0%20%40%60%80%100%

High School Graduation Rate

Bachelors Rate

Race
Total
High School
Bachelors
White11,55010,6322,589
2+ Races552507107
Hispanic43434366
Native American24022611
Other Race103900
Asian858537
Black1280

The highest rate of high school graduation is among asian people with a rate of 100%.

The highest rate of bachelors degrees is among asian people with a rate of 43.53%.

Idaho County, Idaho Educational Attainment by Race

OverallLess Than 9th GradeHigh School GraduateSome CollegeBachelors DegreeGraduate Degree$0$10,000$20,000$30,000$40,000$50,000$60,000

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$52,377$60,972$47,721
Graduate Degree$60,294$0$62,132
High School Graduate$40,250$50,060$27,500
Less Than 9th Grade$41,055$41,927$16,524
Overall$40,559$47,333$33,144
Some College$35,806$43,661$31,232

$40,559

Average Earnings

$47,333

Average Male

$33,144

Average Female

Idaho County, Idaho Earnings by Educational Attainment

Idaho County, Idaho Language by Age

95.22%Languages

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Idaho County, Idaho Language

95.22% of Idaho County, Idaho residents speak only English, while 4.78% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 2.36% of the population.

Idaho County, Idaho Language

Idaho County, Idaho Poverty by Race

BlackOtherHispanicMultipleWhiteNative0%10%20%30%40%50%60%70%80%90%100%

rate

Name
Total
In Poverty
Poverty Rate
White14,9521,4909.97%
Hispanic60519832.73%
Other13512794.07%
Multiple74711214.99%
Native366154.1%
Black77100%

10.81%

Overall Poverty Rate

9.93%

Male Poverty Rate

11.74%

Female Poverty Rate

Poverty in Idaho County, Idaho

The race most likely to be in poverty in Idaho County, Idaho is Black, with 100% below the poverty level.

The race least likely to be in poverty in Idaho County, Idaho is Native, with 4.1% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 3.7%. Among those working part-time, it was 14.84%, and for those that did not work, the poverty rate was 13.48%.

Idaho County, Idaho Poverty

Less Than 9th GradeHigh SchoolSome CollegeBachelors or Greater0%2%4%6%8%10%12%14%16%

rate

Rate
Poverty
Less Than 9th Grade15.96%
Some College11.45%
High School9.67%
Bachelors or Greater5.52%

Idaho County, Idaho Poverty Rate by Education

Male EmployedMale UnemployedFemale EmployedFemale Unemployed0%10%20%30%40%50%60%70%80%

rate

Rate
Poverty
Female Unemployed76.27%
Male Unemployed17.33%
Female Employed8.3%
Male Employed6.88%

Idaho County, Idaho Poverty Rate by Employment Status and Sex

Idaho County, Idaho Income by Household Type

Under10k10kTo15k15kTo25k25kTo35k35kTo50k50kTo75k75kTo100k100kTo150k150kTo200kOver200k0510152025

Households

Families

MarriedFamilies

NonFamilies

Name
Median
Mean
Families$76,074$92,634
Households$60,975$77,479
Married Families$79,947$-999,999,999
Non Families$32,349$42,788
HouseholdsFamiliesMarried FamiliesNon Families020,00040,00060,00080,000100,000

mean

median

Income by Household Type

Idaho County, Idaho Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

60.6%

Overall Marriage Rate

60.6%

Male Marriage Rate

60.6%

Female Marriage Rate

Idaho County, Idaho Married by Age and Sex

45-5455-6435-44Over 6520-34020406080

male

female

Idaho County, Idaho Marriage

The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 45-54.

Idaho County, Idaho Marital Status by Race

OtherRaceHispanicWhiteNonHispanicIndianWhiteTwoOrMoreRacesAsianBlack0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

NeverMarried

Idaho County, Idaho Marital Status

8.84%21.55%60.96%8.38%Veterans by War

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

1,468

Number of Veterans

1,389

Male Veterans

79

Female Veterans

War
Veterans
Vietnam662
First Gulf War234
Second Gulf War96
Korea91
World War II3

Idaho County, Idaho Veterans by War

18 to 3435 to 5455 to 6465 to 7475+050100150200250300350400450500550

count

Age Group
Veterans
65 to 74503
75+438
55 to 64352
35 to 54161
18 to 3414

Idaho County, Idaho Veterans by Age

White2+ RacesAsianBlack02004006008001,0001,2001,4001,600

count

Name
Veterans
% of Total
White1,41111.14%
2+ Races467.41%
Asian67.06%
Black541.67%

Idaho County, Idaho Veterans by Race

Idaho County, Idaho Veterans by Education

10.27%36.41%36.21%17.11%Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

4.46%

Veteran Poverty Rate

32.71%

Veteran Disability Rate

Idaho County, Idaho Veterans by Education

16 - 1920 - 2425 - 2930 - 3435 - 4445 - 5455 - 5960 - 6465 - 7475+0102030405060708090

LaborForceParticipation

49.7%

Labor Force Participation

47.8%

Employment Rate

3.7%

Unemployment Rate

Idaho County, Idaho Employment by Age

Other RaceAsianHispanicWhiteWhite Non-Hispanic2+ RacesNative American0102030405060708090100

LaborForceParticipation

Idaho County, Idaho Employment by Race

Less Than High SchoolHigh School GraduateSome CollegeBachelors or Greater0102030405060708090

LaborForceParticipation

Idaho County, Idaho Employment by Education

Origin of Non-Citizens

9.59%11.64%9.59%67.81%Origin

Europe

Asia

Africa

Oceania

Latin America

North America

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

Origin of Naturalized Citizens

25.22%19.03%48.67%6.19%Origin

Europe

Asia

Africa

Oceania

Latin America

North America

48.62%

Born in Idaho County, Idaho

97.83%

Native Born

2.17%

Foreign Born

0.85%

Non Citizen

1.32%

Naturalized

Place of Birth

97.83% of Idaho County, Idaho residents were born in the United States, with 48.62% having been born in Idaho. 0.85% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Idaho County, Idaho Place of Birth

Sources