Demographics of Princeton city, Illinois

Princeton city, Illinois had 7,674 people on July 1, 2025, by the Census Bureau’s estimate: −171 since July 2020. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.

Princeton city, in four figures

7,674
Population: July 1, 2025, Vintage 2025 estimate. The survey’s 2020–⁠2024 figure is 7,975 ±213.; −2.2%
Change since July 2020: −171 people.; 46.0 ±4.4
Median age: ACS 2020–⁠2024.; $61,946 ±$6,874
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.

Princeton city, Illinois's population shrank 2.2% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Princeton 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

Princeton city, Illinois's population shrank 2.2% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Princeton 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	7,845	100.0	100.0
2021	7,761	98.9	100.2
2022	7,742	98.7	100.7
2023	7,722	98.4	101.6
2024	7,673	97.8	102.5
2025	7,674	97.8	103.1

Population of Princeton city, Illinois on July 1 of each year, Vintage 2025
July 1	Population	Change
2020	7,845	—
2021	7,761	−84
2022	7,742	−19
2023	7,722	−20
2024	7,673	−49
2025	7,674	+1

Age, 2020–2024

The median age is 46.0 ±4.4: for men 41.6 ±3.6 and for women 50.0 ±2.7. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Princeton city by age, ACS 2020–2024
Age	People	Share	Illinois	United States
Under 5	428 ±93	5.4% ±1.2	5.4% ±<0.1	5.6% ±<0.1
5 to 17	1,017 ±189	12.8% ±2.3	16.4% ±0.1	16.3% ±<0.1
18 to 24	628 ±124	7.9% ±1.5	9.1% ±<0.1	9.1% ±<0.1
25 to 44	1,863 ±230	23.4% ±2.8	26.9% ±0.1	26.9% ±<0.1
45 to 64	1,990 ±244	25.0% ±3.0	25.2% ±0.1	24.8% ±<0.1
65 and over	2,049 ±248	25.7% ±3.0	17.0% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $61,946 ±$6,874, and income per person $36,717 ±$3,580, 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 Princeton city by income, ACS 2020–2024
Household income	Households	Share	Illinois	United States
Under $25,000	655 ±136	18.1% ±3.6	14.6% ±0.1	14.6% ±<0.1
$25,000 to $49,999	723 ±166	20.0% ±4.5	16.0% ±0.2	16.7% ±<0.1
$50,000 to $74,999	756 ±204	20.9% ±5.5	14.8% ±0.1	15.5% ±<0.1
$75,000 to $99,999	447 ±114	12.3% ±3.1	12.6% ±0.1	12.6% ±<0.1
$100,000 to $149,999	654 ±136	18.1% ±3.6	18.0% ±0.2	17.5% ±<0.1
$150,000 to $199,999	297 ±83	8.2% ±2.3	10.1% ±0.1	9.6% ±<0.1
$200,000 or more	44 to 134	1.2% to 3.7%	13.8% ±0.1	13.4% ±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%.

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 Princeton city by age, ACS 2020–2024
Age	Below poverty	Rate	Illinois	United States
All ages	979 ±256	12.7% ±3.3	11.8% ±0.1	12.5% ±0.1
Under 18	300 ±122	21.0% ±7.6	15.1% ±0.2	16.1% ±0.1
18 to 59	505 ±145	12.9% ±3.6	11.0% ±0.1	11.6% ±0.1
60 and over	88 to 260	7.3% ±3.5	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 Princeton city, ACS 2020–2024
Measure	Princeton city	Illinois	United States
Housing units	3,863 ±162	5,457,452 ±471	143,775,355 ±10,234
Occupied	93.7% ±3.0	92.3% ±0.1	89.9% ±0.1
Vacant	6.3% ±2.6	7.7% ±0.1	10.1% ±0.1
Owner occupied	68.6% ±4.3	67.1% ±0.3	65.2% ±0.3
Renter occupied	31.4% ±4.9	32.9% ±0.2	34.8% ±0.1
Median home value	$134,700 ±$14,368	$263,300 ±$797	$332,700 ±$236
Median gross rent	$782 ±$37	$1,274 ±$5	$1,413 ±$2
Median year built	1964 ±2	1971 ±2	1980 ±1

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 Princeton city by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Illinois	United States
Hispanic or Latino	419 ±127	5.3% ±1.6	18.8% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	6,896 ±301	86.5% ±3.0	58.1% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	40 to 128	0.5% to 1.6%	13.3% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	50 to 154	0.6% to 1.9%	5.9% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 18	0% to 0.2%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 18	0% to 0.2%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 133	0% to 1.7%	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	418 ±148	5.2% ±1.9	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 Princeton city by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Illinois	United States
Born in the state	6,238 ±333	78.2% ±3.6	66.5% ±0.1	57.3% ±<0.1
Born in another state	1,585 ±310	19.9% ±3.9	17.5% ±0.1	26.9% ±<0.1
Born a citizen outside the states	3 to 89	< 0.1% to 1.1%	1.3% ±<0.1	1.7% ±<0.1
Born abroad	106 ±51	1.3% ±0.6	14.7% ±0.1	14.1% ±<0.1
Naturalized citizens	0 to 78	0% to 1.0%	7.7% ±0.1	7.4% ±<0.1
Not citizens	16 to 120	0.2% to 1.5%	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%.

Princeton city among the places of Illinois

265th 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 Princeton city in population, ACS 2020–2024
Place	ACS 2020–⁠2024
Paris city	8,276 ±207
Hillside village	8,084 ±26
Oak Brook village	8,056 ±32
Island Lake village	8,014 ±53
Lincolnshire village	7,980 ±40
Princeton city	7,975 ±213
Rockton village	7,974 ±568
Silvis city	7,955 ±29
South Beloit city	7,946 ±23
Round Lake Park village	7,919 ±415
West Dundee village	7,906 ±31

Rankings this appears in

No. 5 Places in Illinois by median age
No. 37 Places in Illinois by poverty rate
No. 127 Places in Illinois by homeownership rate
No. 146 Places in Illinois by per capita income
No. 181 Places in Illinois by Hispanic or Latino share
No. 193 Places in Illinois by median household income

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