Idaho County, Idaho Population 2024

18,143

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)
White15,49692.31%
Two or more races5483.26%
Native American5243.12%
Other race1170.7%
Asian870.52%
Black or African American150.09%
Native Hawaiian or Pacific Islander00%

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

Idaho County, Idaho Median Age

49.5

Total

47.3

Male

51.8

Female

Idaho County, Idaho Adults

There are 13,533 adults, (4,743 of whom are seniors) in Idaho County, Idaho.

Idaho County, Idaho Age Dependency

91

Age Dependency Ratio

54

Old Age Dependency Ratio

37

Child Dependency Ratio

Idaho County, Idaho Sex Ratio

Female7,95247.37%
Male8,83552.63%

Idaho County, Idaho Population by Age

Idaho County, Idaho Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All6,6032.4478.321.7
Married4,0462.9983.916.1
Non Family2,0471.1570.329.7
Female3613.4155.144.9
Male1493.0792.67.4

2.99

Average Family Size

2.44

Average Household Size

78.3%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Idaho County, Idaho Households and Families

Male

Female

Education Attained
Count
Percentage
9th to 12th Grade7956.38%
Associates Degree1,38811.13%
Bachelors Degree2,05916.51%
Graduate Degree6174.95%
High School Graduate4,33934.8%
Less Than 9th Grade1721.38%
Some College3,10024.86%

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

High School Graduation Rate

Bachelors Rate

Race
Total
High School
Bachelors
White11,36610,5052,544
2+ Races40036677
Hispanic39432030
Native American3182998
Other Race91790
Asian747425
Black1180

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 33.78%.

Idaho County, Idaho Educational Attainment by Race

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$52,188$57,957$43,355
Graduate Degree$44,345$43,036$62,105
High School Graduate$32,750$43,478$21,941
Less Than 9th Grade$38,207$38,730$17,841
Overall$38,157$43,959$30,293
Some College$33,898$43,564$30,572

$38,157

Average Earnings

$43,959

Average Male

$30,293

Average Female

Idaho County, Idaho Earnings by Educational Attainment

Idaho County, Idaho Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Idaho County, Idaho Language

95.66% of Idaho County, Idaho residents speak only English, while 4.34% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 2.26% of the population.

Idaho County, Idaho Language

Idaho County, Idaho Poverty by Race

rate

Name
Total
In Poverty
Poverty Rate
White14,7171,48310.08%
Hispanic55913924.87%
Other11410894.74%
Multiple5225610.73%
Black88100%
Native48210.21%

10.39%

Overall Poverty Rate

9.88%

Male Poverty Rate

10.93%

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 0.21% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.01%. Among those working part-time, it was 14.2%, and for those that did not work, the poverty rate was 15.05%.

Idaho County, Idaho Poverty

rate

Rate
Poverty
Less Than 9th Grade19.98%
High School12.26%
Some College11.38%
Bachelors or Greater3.97%

Idaho County, Idaho Poverty Rate by Education

rate

Rate
Poverty
Female Unemployed80.41%
Male Unemployed10.61%
Female Employed5.79%
Male Employed5.38%

Idaho County, Idaho Poverty Rate by Employment Status and Sex

Idaho County, Idaho Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

Name
Median
Mean
Families$66,406$84,431
Households$54,745$70,728
Married Families$70,688$-999,999,999
Non Families$29,892$39,583

mean

median

Income by Household Type

Idaho County, Idaho Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

61.6%

Overall Marriage Rate

60.9%

Male Marriage Rate

62.4%

Female Marriage Rate

Idaho County, Idaho Married by Age and Sex

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

Married

Widowed

Divorced

Separated

NeverMarried

Idaho County, Idaho Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

1,486

Number of Veterans

1,406

Male Veterans

80

Female Veterans

War
Veterans
Vietnam677
First Gulf War172
Korea113
Second Gulf War68
World War II9

Idaho County, Idaho Veterans by War

count

Age Group
Veterans
65 to 74539
75+448
55 to 64347
35 to 54128
18 to 3424

Idaho County, Idaho Veterans by Age

count

Name
Veterans
% of Total
White1,42311.33%
2+ Races4810.39%
Native American113.36%
Black430.77%

Idaho County, Idaho Veterans by Race

Idaho County, Idaho Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

5.89%

Veteran Poverty Rate

34.18%

Veteran Disability Rate

Idaho County, Idaho Veterans by Education

LaborForceParticipation

49.6%

Labor Force Participation

47.4%

Employment Rate

4.3%

Unemployment Rate

Idaho County, Idaho Employment by Age

LaborForceParticipation

Idaho County, Idaho Employment by Race

LaborForceParticipation

Idaho County, Idaho Employment by Education

Origin of Non-Citizens

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

Europe

Asia

Africa

Oceania

Latin America

North America

48.97%

Born in Idaho County, Idaho

98.22%

Native Born

1.78%

Foreign Born

0.68%

Non Citizen

1.1%

Naturalized

Place of Birth

98.22% of Idaho County, Idaho residents were born in the United States, with 48.97% having been born in Idaho. 0.68% 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