Washington County, Illinois Population 2024

13,449

Washington County, Illinois's estimated 2024 population is 13,449 with a growth rate of -0.64% in the past year according to the most recent United States census data. Washington County, Illinois is the 76th largest county in Illinois. The 2010 population was 14,711 and has seen a growth of -8.58% since that time.

Note: data after 2022 is projected based on recent change
Year
Population
Growth
Change
202913,014-87-0.66%
202813,101-87-0.66%
202713,188-87-0.66%
202613,275-87-0.65%
202513,362-87-0.65%
202413,449-87-0.64%
202313,536-87-0.64%
202213,623-17-0.12%
202113,640-83-0.6%
202013,723-203-1.46%
201913,926-84-0.6%
201814,010500.36%
201713,960-216-1.52%
201614,176-83-0.58%
201514,259-130-0.9%
201414,389-22-0.15%
201314,411-187-1.28%
201214,598240.16%
201114,574-137-0.93%
201014,71100%
199014,965-507-3.28%
198015,4721,69212.28%
197013,7802111.56%
196013,569-891-6.16%
195014,460-1,341-8.49%
194015,801-485-2.98%
193016,286-1,749-9.7%
192018,035-724-3.86%
191018,759-767-3.93%
190019,5262641.37%
189019,262-1,850-8.76%
188021,1123,51319.96%
187017,5993,86828.17%
186013,7316,77897.48%
18506,9532,14344.55%
18404,8103,135187.16%
18301,67515810.42%
18201,517-11,497-88.34%
2024 Growth Rate
-0.64% (-87)
County Website
Washington County
County Seat
Nashville
2020 Population
13,723
Area
563 mi²
Density
24 people/mi²
Growth Since 2020
-2% (-274)
Founded
January 2, 1818

Population by Race

Race
Population
Percentage (of total)
White13,07895.59%
Two or more races4103%
Black or African American1060.77%
Other race420.31%
Asian330.24%
Native American130.1%
Native Hawaiian or Pacific Islander00%

White

Two or more races

Black or African American

Other race

Asian

Native American

Native Hawaiian or Pacific Islander

Washington County, Illinois Population by Race

Washington County, Illinois Population Pyramid 2024

Washington County, Illinois Median Age

44.2

Total

43.2

Male

45.6

Female

Washington County, Illinois Adults

There are 10,810 adults, (2,910 of whom are seniors) in Washington County, Illinois.

Washington County, Illinois Age Dependency

73.2

Age Dependency Ratio

36.8

Old Age Dependency Ratio

36.4

Child Dependency Ratio

Washington County, Illinois Sex Ratio

Female6,72549.15%
Male6,95750.85%

Washington County, Illinois Population by Age

Washington County, Illinois Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All5,7222.3581.218.8
Married3,0722.9489.410.6
Non Family1,9101.1670.129.9
Female4402.965.234.8
Male3003.0791.78.3

2.89

Average Family Size

2.35

Average Household Size

81.2%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Washington County, Illinois Households and Families

Male

Female

Education Attained
Count
Percentage
9th to 12th Grade3743.8%
Associates Degree1,54315.68%
Bachelors Degree1,61116.37%
Graduate Degree7918.04%
High School Graduate3,12731.77%
Less Than 9th Grade2973.02%
Some College2,10021.33%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Washington County, Illinois Educational Attainment by Sex (over 25)

Washington County, Illinois Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

Race
Total
High School
Bachelors
White9,5348,9072,364
2+ Races15214115
Hispanic1099923
Black36260
Asian29140
Other Race19190
Native American13112

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

The highest rate of bachelors degrees is among white people with a rate of 24.8%.

Washington County, Illinois Educational Attainment by Race

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$62,009$67,014$60,348
Graduate Degree$66,786$73,654$65,714
High School Graduate$38,092$43,405$33,152
Less Than 9th Grade$20,962$28,692$17,578
Overall$46,783$52,123$40,296
Some College$43,981$56,463$37,239

$46,783

Average Earnings

$52,123

Average Male

$40,296

Average Female

Washington County, Illinois Earnings by Educational Attainment

Washington County, Illinois Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Washington County, Illinois Language

97.73% of Washington County, Illinois residents speak only English, while 2.27% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 1.13% of the population.

Washington County, Illinois Language

Washington County, Illinois Poverty by Race

rate

Name
Total
In Poverty
Poverty Rate
White12,8549607.47%
Multiple3994511.28%
Hispanic2083818.27%
Other422764.29%
Black53713.21%

7.8%

Overall Poverty Rate

7.43%

Male Poverty Rate

8.19%

Female Poverty Rate

Poverty in Washington County, Illinois

The race most likely to be in poverty in Washington County, Illinois is Other, with 64.29% below the poverty level.

The race least likely to be in poverty in Washington County, Illinois is White, with 7.47% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.44%. Among those working part-time, it was 9.93%, and for those that did not work, the poverty rate was 13.31%.

Washington County, Illinois Poverty

rate

Rate
Poverty
Less Than 9th Grade30.7%
High School8.25%
Some College5.86%
Bachelors or Greater1.93%

Washington County, Illinois Poverty Rate by Education

rate

Rate
Poverty
Female Unemployed26.92%
Male Unemployed11.98%
Male Employed3.29%
Female Employed3.12%

Washington County, Illinois Poverty Rate by Employment Status and Sex

Washington County, Illinois Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

Name
Median
Mean
Families$94,529$104,605
Households$75,652$89,742
Married Families$108,192$-999,999,999
Non Families$43,250$58,166

mean

median

Income by Household Type

Washington County, Illinois Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

55.4%

Overall Marriage Rate

53.8%

Male Marriage Rate

57.0%

Female Marriage Rate

Washington County, Illinois Married by Age and Sex

male

female

Washington County, Illinois 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 55-64.

Washington County, Illinois Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Washington County, Illinois Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

988

Number of Veterans

945

Male Veterans

43

Female Veterans

War
Veterans
Vietnam443
Second Gulf War188
First Gulf War177
Korea102
World War II17

Washington County, Illinois Veterans by War

count

Age Group
Veterans
65 to 74335
75+314
35 to 54144
55 to 64140
18 to 3455

Washington County, Illinois Veterans by Age

count

Name
Veterans
% of Total
White9639.23%
2+ Races197.42%
Asian620.69%
Hispanic42.94%

Washington County, Illinois Veterans by Race

Washington County, Illinois Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

11.98%

Veteran Poverty Rate

28.31%

Veteran Disability Rate

Washington County, Illinois Veterans by Education

LaborForceParticipation

63.8%

Labor Force Participation

61.2%

Employment Rate

4.1%

Unemployment Rate

Washington County, Illinois Employment by Age

LaborForceParticipation

Washington County, Illinois Employment by Race

LaborForceParticipation

Washington County, Illinois 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

82.12%

Born in Washington County, Illinois

99.36%

Native Born

0.64%

Foreign Born

0.31%

Non Citizen

0.33%

Naturalized

Place of Birth

99.36% of Washington County, Illinois residents were born in the United States, with 82.12% having been born in Illinois. 0.31% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Washington County, Illinois Place of Birth

Sources