Ada County, Idaho Population 2024

530,342
0100K200K300K400K500K600K18801900192019401960198020002020YearPopulation

Ada County, Idaho's estimated 2024 population is 530,342 with a growth rate of 1.08% in the past year according to the most recent United States census data. Ada County, Idaho is the largest county in Idaho. The 2010 population was 393,369 and has seen a growth of 34.82% since that time.

Note: data after 2022 is projected based on recent change
Year
Population
Growth
Change
2029558,6875,6691.03%
2028553,0185,6691.04%
2027547,3495,6691.05%
2026541,6805,6691.06%
2025536,0115,6691.07%
2024530,3425,6691.08%
2023524,6735,6691.09%
2022519,0045,9791.17%
2021513,02514,7472.96%
2020498,27816,3983.4%
2019481,88012,7192.71%
2018469,16112,1672.66%
2017456,99412,0652.71%
2016444,92911,6752.69%
2015433,2547,4801.76%
2014425,7749,5942.31%
2013416,1807,1481.75%
2012409,0327,6801.91%
2011401,3527,9832.03%
2010393,36900%
1990205,77532,73918.92%
1980173,03660,80654.18%
1970112,23018,77020.08%
196093,46022,81132.29%
195070,64920,24840.17%
194050,40112,47632.9%
193037,9252,7127.7%
192035,2136,12521.06%
191029,08817,529151.65%
190011,5593,19138.13%
18908,3683,69479.03%
18804,6741,99974.73%
18702,675-556,012-99.52%
2024 Growth Rate
1.08% (5,669)
County Website
Ada County
State
Idaho
County Seat
Boise
2020 Population
498,278
Area
1052 mi²
Density
504 people/mi²
Growth Since 2020
6.43% (32,064)
Founded
December 22, 1864

Population by Race

Race
Population
Percentage (of total)
White429,01486.24%
Two or more races33,7906.79%
Asian12,8672.59%
Other race11,5442.32%
Black or African American6,2601.26%
Native American2,9380.59%
Native Hawaiian or Pacific Islander1,0810.22%
86.24%6.79%Race

White

Two or more races

Asian

Other race

Black or African American

Native American

Native Hawaiian or Pacific Islander

Ada County, Idaho Population by Race

Ada County, Idaho Population Pyramid 2024

0102030405060708020K18K16K14K12K10K8K6K4K2K002K4K6K8K10K12K14K16K18K20KMaleFemale

Ada County, Idaho Median Age

38.1

Total

37.4

Male

38.8

Female

Ada County, Idaho Adults

There are 384,839 adults, (76,317 of whom are seniors) in Ada County, Idaho.

Ada County, Idaho Age Dependency

61.3

Age Dependency Ratio

24.7

Old Age Dependency Ratio

36.5

Child Dependency Ratio

Ada County, Idaho Sex Ratio

Female246,39349.53%
Male251,10150.47%

Ada County, Idaho Population by Age

Ada County, Idaho Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All190,6412.5471.328.7
Married102,0323.1385.414.6
Non Family64,3421.3753.446.6
Female15,6983.1357.742.3
Male8,5693.2264.535.5

3.05

Average Family Size

2.54

Average Household Size

71.3%

Rate of Home Ownership

53.52%8.23%33.75%Households by Type

Married

Male

Female

NonFamily

MarriedAllMaleFemaleNon Family00.10.20.30.40.50.60.70.80.91

owner

renter

Ada County, Idaho Households and Families

Less Than 9th Grade9th to 12th GradeHigh School GraduateSome CollegeAssociates DegreeBachelors DegreeGraduate Degree010K20K30K40K50K

Male

Female

Education Attained
Count
Percentage
9th to 12th Grade10,6693.14%
Associates Degree30,6109%
Bachelors Degree94,82327.89%
Graduate Degree50,56514.87%
High School Graduate67,46619.84%
Less Than 9th Grade5,3031.56%
Some College80,57123.7%
19.84%23.7%9%27.89%14.87%Over 25 Education

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

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

Ada County, Idaho Educational Attainment by Race

IslanderWhite2+ RacesAsianHispanicOther RaceBlackNative American0%20%40%60%80%100%

High School Graduation Rate

Bachelors Rate

Race
Total
High School
Bachelors
White290,845280,940126,919
Hispanic24,23020,1387,121
2+ Races17,51216,0876,839
Asian9,1738,3405,183
Other Race7,6076,1902,128
Black3,0162,391718
Native American2,1371,590367
Islander676658354

The highest rate of high school graduation is among islander people with a rate of 97.34%.

The highest rate of bachelors degrees is among asian people with a rate of 56.5%.

Ada County, Idaho Educational Attainment by Race

OverallLess Than 9th GradeHigh School GraduateSome CollegeBachelors DegreeGraduate Degree$0$20,000$40,000$60,000$80,000$100,000

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$58,400$76,906$47,650
Graduate Degree$80,935$100,718$68,923
High School Graduate$37,492$42,624$30,032
Less Than 9th Grade$28,825$31,616$24,029
Overall$49,771$58,119$41,392
Some College$43,575$51,562$36,078

$49,771

Average Earnings

$58,119

Average Male

$41,392

Average Female

Ada County, Idaho Earnings by Educational Attainment

Ada County, Idaho Language by Age

91.34%Languages

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Ada County, Idaho Language

91.34% of Ada County, Idaho residents speak only English, while 8.66% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 4.36% of the population.

Ada County, Idaho Language

Ada County, Idaho Poverty by Race

NativeBlackIslanderAsianOtherHispanicWhiteMultiple0%2%4%6%8%10%12%14%16%18%20%22%24%

rate

Name
Total
In Poverty
Poverty Rate
White401,56432,5848.11%
Hispanic42,2694,50910.67%
Multiple32,7282,3317.12%
Asian12,6291,60212.69%
Other11,1981,36312.17%
Black5,9151,32722.43%
Native2,54360323.71%
Islander1,06221119.87%

8.77%

Overall Poverty Rate

8.31%

Male Poverty Rate

9.23%

Female Poverty Rate

Poverty in Ada County, Idaho

The race most likely to be in poverty in Ada County, Idaho is Native, with 23.71% below the poverty level.

The race least likely to be in poverty in Ada County, Idaho is Multiple, with 7.12% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.71%. Among those working part-time, it was 13.96%, and for those that did not work, the poverty rate was 14.91%.

Ada County, Idaho Poverty

Less Than 9th GradeHigh SchoolSome CollegeBachelors or Greater0%2%4%6%8%10%12%14%16%18%20%22%

rate

Rate
Poverty
Less Than 9th Grade21.5%
High School10.53%
Some College7.21%
Bachelors or Greater3.97%

Ada County, Idaho Poverty Rate by Education

Male EmployedMale UnemployedFemale EmployedFemale Unemployed0%2%4%6%8%10%12%14%16%18%20%22%24%26%

rate

Rate
Poverty
Female Unemployed25.99%
Male Unemployed17.48%
Female Employed5.87%
Male Employed4.62%

Ada County, Idaho Poverty Rate by Employment Status and Sex

Ada County, Idaho Income by Household Type

Under10k10kTo15k15kTo25k25kTo35k35kTo50k50kTo75k75kTo100k100kTo150k150kTo200kOver200k0510152025

Households

Families

MarriedFamilies

NonFamilies

Name
Median
Mean
Families$101,585$133,794
Households$83,881$113,335
Married Families$113,533$147,687
Non Families$51,899$68,942
HouseholdsFamiliesMarried FamiliesNon Families050,000100,000150,000

mean

median

Income by Household Type

Ada County, Idaho Marital Status

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

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

53.1%

Overall Marriage Rate

53.8%

Male Marriage Rate

52.5%

Female Marriage Rate

Ada County, Idaho Married by Age and Sex

45-5435-4455-64Over 6520-3415-1901020304050607080

male

female

Ada 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.

Ada County, Idaho Marital Status by Race

AsianWhiteNonHispanicWhiteOtherRaceTwoOrMoreRacesHispanicBlackHawaiianIndian0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

NeverMarried

Ada County, Idaho Marital Status

29.79%29.71%34.67%Veterans by War

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

32,099

Number of Veterans

29,110

Male Veterans

2,989

Female Veterans

War
Veterans
Vietnam9,972
Second Gulf War8,567
First Gulf War8,544
Korea1,403
World War II275

Ada County, Idaho Veterans by War

18 to 3435 to 5455 to 6465 to 7475+01,0002,0003,0004,0005,0006,0007,0008,0009,000

count

Age Group
Veterans
35 to 548,365
65 to 747,589
75+6,902
55 to 646,429
18 to 342,814

Ada County, Idaho Veterans by Age

WhiteHispanic2+ RacesOther RaceAsianBlackNative AmericanIslander02,0004,0006,0008,00010,00012,00014,00016,00018,00020,00022,00024,00026,00028,00030,000

count

Name
Veterans
% of Total
White28,9958.63%
Hispanic1,8046%
2+ Races1,7698.27%
Other Race4775.4%
Asian3343.28%
Black2506%
Native American2339.64%
Islander414.65%

Ada County, Idaho Veterans by Race

Ada County, Idaho Veterans by Education

18.81%39.63%39.15%Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

5.29%

Veteran Poverty Rate

25.75%

Veteran Disability Rate

Ada County, Idaho Veterans by Education

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

LaborForceParticipation

66.5%

Labor Force Participation

64.1%

Employment Rate

3.2%

Unemployment Rate

Ada County, Idaho Employment by Age

HispanicOther Race2+ RacesBlackAsianWhiteWhite Non-HispanicNative AmericanIslander01020304050607080

LaborForceParticipation

Ada County, Idaho Employment by Race

Less Than High SchoolHigh School GraduateSome CollegeBachelors or Greater0102030405060708090

LaborForceParticipation

Ada County, Idaho Employment by Education

Origin of Non-Citizens

9.51%31.98%7.39%40.68%9.03%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

24.37%39.56%6.18%22.85%6.59%Origin

Europe

Asia

Africa

Oceania

Latin America

North America

40.28%

Born in Ada County, Idaho

94.22%

Native Born

5.78%

Foreign Born

2.7%

Non Citizen

3.09%

Naturalized

Place of Birth

94.22% of Ada County, Idaho residents were born in the United States, with 40.28% having been born in Idaho. 2.7% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Ada County, Idaho Place of Birth

Sources