Demographics of Washington city, Illinois

Washington city, Illinois had 15,902 people on July 1, 2025, by the Census Bureau’s estimate: −167 since July 2020. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.

Washington city, in four figures

15,902
Population: July 1, 2025, Vintage 2025 estimate. The survey’s 2020–⁠2024 figure is 15,919 ±35.; −1.0%
Change since July 2020: −167 people.; 38.2 ±2.8
Median age: ACS 2020–⁠2024.; $95,179 ±$10,188
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. The Bureau publishes no births, deaths or migration for a place, so the change is the difference between one July estimate and the next.

Washington city, Illinois's population shrank 1.0% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Washington city, Illinois's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

Source: The Census Bureau

About this chart

The figures

Washington city, Illinois's population shrank 1.0% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Washington city, Illinois's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	16,069	100.0	100.0
2021	16,001	99.6	100.2
2022	15,868	98.7	100.7
2023	15,869	98.8	101.6
2024	15,869	98.8	102.5
2025	15,902	99.0	103.1

Population of Washington city, Illinois on July 1 of each year, Vintage 2025
July 1	Population	Change
2020	16,069	—
2021	16,001	−68
2022	15,868	−133
2023	15,869	+1
2024	15,869	0
2025	15,902	+33

Age, 2020–2024

The median age is 38.2 ±2.8: for men 36.3 ±2.7 and for women 39.9 ±3.8. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Washington city by age, ACS 2020–2024
Age	People	Share	Illinois	United States
Under 5	731 ±193	4.6% ±1.2	5.4% ±<0.1	5.6% ±<0.1
5 to 17	3,877 ±444	24.4% ±2.8	16.4% ±0.1	16.3% ±<0.1
18 to 24	953 ±219	6.0% ±1.4	9.1% ±<0.1	9.1% ±<0.1
25 to 44	4,072 ±459	25.6% ±2.9	26.9% ±0.1	26.9% ±<0.1
45 to 64	3,691 ±397	23.2% ±2.5	25.2% ±0.1	24.8% ±<0.1
65 and over	2,595 ±319	16.3% ±2.0	17.0% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $95,179 ±$10,188, and income per person $44,529 ±$3,191, in 2024 dollars. The median is $83,390 ±$362 in Illinois and $80,734 ±$166 in the United States.

Households by income

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Households in Washington city by income, ACS 2020–2024
Household income	Households	Share	Illinois	United States
Under $25,000	637 ±212	10.5% ±3.5	14.6% ±0.1	14.6% ±<0.1
$25,000 to $49,999	648 ±180	10.7% ±2.9	16.0% ±0.2	16.7% ±<0.1
$50,000 to $74,999	1,101 ±246	18.2% ±3.9	14.8% ±0.1	15.5% ±<0.1
$75,000 to $99,999	725 ±178	12.0% ±2.9	12.6% ±0.1	12.6% ±<0.1
$100,000 to $149,999	1,332 ±274	22.0% ±4.4	18.0% ±0.2	17.5% ±<0.1
$150,000 to $199,999	783 ±195	12.9% ±3.1	10.1% ±0.1	9.6% ±<0.1
$200,000 or more	827 ±165	13.7% ±2.6	13.8% ±0.1	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Washington city by age, ACS 2020–2024
Age	Below poverty	Rate	Illinois	United States
All ages	406 to 1,212	2.6% to 7.7%	11.8% ±0.1	12.5% ±0.1
Under 18	72 to 564	1.6% to 12.3%	15.1% ±0.2	16.1% ±0.1
18 to 59	136 to 418	1.7% to 5.3%	11.0% ±0.1	11.6% ±0.1
60 and over	105 to 323	3.3% to 9.8%	10.6% ±0.1	11.0% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Housing, 2020–2024

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Housing in Washington city, ACS 2020–2024
Measure	Washington city	Illinois	United States
Housing units	6,267 ±299	5,457,452 ±471	143,775,355 ±10,234
Occupied	96.6% ±2.3	92.3% ±0.1	89.9% ±0.1
Vacant	1.4% to 5.5%	7.7% ±0.1	10.1% ±0.1
Owner occupied	80.4% ±2.9	67.1% ±0.3	65.2% ±0.3
Renter occupied	19.6% ±4.2	32.9% ±0.2	34.8% ±0.1
Median home value	$221,900 ±$11,307	$263,300 ±$797	$332,700 ±$236
Median gross rent	$1,155 ±$123	$1,274 ±$5	$1,413 ±$2
Median year built	1978 ±3	1971 ±2	1980 ±1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Washington city by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Illinois	United States
Hispanic or Latino	423 ±176	2.7% ±1.1	18.8% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	14,914 ±286	93.7% ±1.8	58.1% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	7 to 131	< 0.1% to 0.8%	13.3% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	78 to 298	0.5% to 1.9%	5.9% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 20	0% to 0.1%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 20	0% to 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 57	0% to 0.4%	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	299 ±135	1.9% ±0.8	3.4% ±0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Washington city by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Illinois	United States
Born in the state	13,317 ±462	83.7% ±2.9	66.5% ±0.1	57.3% ±<0.1
Born in another state	2,232 ±426	14.0% ±2.7	17.5% ±0.1	26.9% ±<0.1
Born a citizen outside the states	43 to 241	0.3% to 1.5%	1.3% ±<0.1	1.7% ±<0.1
Born abroad	228 ±103	1.4% ±0.6	14.7% ±0.1	14.1% ±<0.1
Naturalized citizens	44 to 228	0.3% to 1.4%	7.7% ±0.1	7.4% ±<0.1
Not citizens	28 to 156	0.2% to 1.0%	7.0% ±0.1	6.8% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Washington city among the places of Illinois

158th of 337 places of 5,000 or more by the survey’s 2020–2024 count. Every one is listed on the Illinois page.

Places of Illinois near Washington city in population, ACS 2020–2024
Place	ACS 2020–⁠2024
Morton village	16,595 ±1,000
Mattoon city	16,586 ±410
Westchester village	16,436 ±33
Country Club Hills city	16,324 ±50
La Grange village	15,998 ±38
Washington city	15,919 ±35
Prospect Heights city	15,618 ±32
Norridge village	15,439 ±500
Bradley village	15,325 ±72
Dixon city	14,910 ±413
Morris city	14,898 ±468

Rankings this appears in

No. 50 Places in Illinois by homeownership rate
No. 59 Places in Illinois by median age
No. 63 Places in Illinois by median household income
No. 85 Places in Illinois by per capita income
No. 118 Places in Illinois by median rent
No. 168 Places in Illinois by median home value

Sources

Census Bureau population estimates — incorporated places and New England towns — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Compiled automatically from Census Bureau population estimates — incorporated places and New England towns and American Community Survey 5-year estimates — table-based Summary File by a checked SQL query · Editor: Kian O'Connor · How this site is built

Data retrieved September 25, 2026