Demographics of Stonington town, Connecticut

Stonington town, Connecticut had 18,832 people on July 1, 2025, by the Census Bureau’s estimate: +522 since July 2020. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.

Stonington town, in four figures

18,832
Population: July 1, 2025, Vintage 2025 estimate. The survey’s 2020–⁠2024 figure is 18,478 ±24.; +2.9%
Change since July 2020: +522 people.; 52.8 ±1.7
Median age: ACS 2020–⁠2024.; $114,797 ±$11,865
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 town, so the change is the difference between one July estimate and the next.

Stonington town, Connecticut's population grew 2.9% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Stonington town, Connecticut'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

Stonington town, Connecticut's population grew 2.9% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Stonington town, Connecticut'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	18,310	100.0	100.0
2021	18,423	100.6	100.2
2022	18,394	100.5	100.7
2023	18,464	100.8	101.6
2024	18,802	102.7	102.5
2025	18,832	102.9	103.1

Population of Stonington town, Connecticut on July 1 of each year, Vintage 2025
July 1	Population	Change
2020	18,310	—
2021	18,423	+113
2022	18,394	−29
2023	18,464	+70
2024	18,802	+338
2025	18,832	+30

Age, 2020–2024

The median age is 52.8 ±1.7: for men 51.4 ±3.5 and for women 55.0 ±2.3. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

2 more columns on a wider screen

People in Stonington town by age, ACS 2020–2024
Age	People	Share	Connecticut	United States
Under 5	691 ±212	3.7% ±1.1	5.0% ±<0.1	5.6% ±<0.1
5 to 17	2,281 ±387	12.3% ±2.1	15.2% ±0.1	16.3% ±<0.1
18 to 24	789 ±193	4.3% ±1.0	9.3% ±0.1	9.1% ±<0.1
25 to 44	3,609 ±489	19.5% ±2.6	25.3% ±0.1	26.9% ±<0.1
45 to 64	5,696 ±508	30.8% ±2.8	26.7% ±0.1	24.8% ±<0.1
65 and over	5,412 ±435	29.3% ±2.4	18.5% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $114,797 ±$11,865, and income per person $73,995 ±$5,040, in 2024 dollars. The median is $95,781 ±$732 in Connecticut and $80,734 ±$166 in the United States.

Households by income

2 more columns on a wider screen

Households in Stonington town by income, ACS 2020–2024
Household income	Households	Share	Connecticut	United States
Under $25,000	924 ±182	10.6% ±2.0	12.9% ±0.3	14.6% ±<0.1
$25,000 to $49,999	953 ±199	11.0% ±2.3	13.7% ±0.3	16.7% ±<0.1
$50,000 to $74,999	1,128 ±241	13.0% ±2.7	13.3% ±0.3	15.5% ±<0.1
$75,000 to $99,999	877 ±175	10.1% ±2.0	11.9% ±0.3	12.6% ±<0.1
$100,000 to $149,999	1,464 ±240	16.8% ±2.7	17.7% ±0.3	17.5% ±<0.1
$150,000 to $199,999	1,274 ±244	14.6% ±2.8	11.3% ±0.2	9.6% ±<0.1
$200,000 or more	2,082 ±332	23.9% ±3.7	19.2% ±0.3	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).

2 more columns on a wider screen

Poverty rate in Stonington town by age, ACS 2020–2024
Age	Below poverty	Rate	Connecticut	United States
All ages	1,271 ±343	7.0% ±1.9	10.0% ±0.2	12.5% ±0.1
Under 18	177 to 527	11.8% ±5.7	13.0% ±0.5	16.1% ±0.1
18 to 59	409 ±152	4.9% ±1.8	9.4% ±0.3	11.6% ±0.1
60 and over	510 ±148	7.4% ±2.1	8.9% ±0.3	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

1 more column on a wider screen

Housing in Stonington town, ACS 2020–2024
Measure	Stonington town	Connecticut	United States
Housing units	9,900 ±337	1,541,822 ±276	143,775,355 ±10,234
Occupied	87.9% ±1.3	93.0% ±0.2	89.9% ±0.1
Vacant	12.1% ±2.2	7.0% ±0.2	10.1% ±0.1
Owner occupied	72.6% ±3.8	66.5% ±0.4	65.2% ±0.3
Renter occupied	27.4% ±3.6	33.5% ±0.3	34.8% ±0.1
Median home value	$483,400 ±$25,549	$366,900 ±$1,621	$332,700 ±$236
Median gross rent	$1,446 ±$93	$1,488 ±$10	$1,413 ±$2
Median year built	1968 ±5	1967 ±1	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

2 more columns on a wider screen

People in Stonington town by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Connecticut	United States
Hispanic or Latino	509 ±214	2.8% ±1.2	18.3% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	15,798 ±738	85.5% ±4.0	61.9% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	187 to 591	1.0% to 3.2%	9.8% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	91 to 587	0.5% to 3.2%	4.7% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	5 to 113	< 0.1% to 0.6%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 21	0% to 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	3 to 201	< 0.1% to 1.1%	0.9% ±0.1	0.6% ±<0.1
Two or more races, not Hispanic	571 to 1,993	3.1% to 10.8%	4.3% ±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).

2 more columns on a wider screen

People in Stonington town by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Connecticut	United States
Born in the state	7,249 ±660	39.2% ±3.6	53.3% ±0.3	57.3% ±<0.1
Born in another state	10,109 ±618	54.7% ±3.3	27.1% ±0.2	26.9% ±<0.1
Born a citizen outside the states	34 to 126	0.2% to 0.7%	3.9% ±0.1	1.7% ±<0.1
Born abroad	1,040 ±286	5.6% ±1.5	15.7% ±0.2	14.1% ±<0.1
Naturalized citizens	710 ±201	3.8% ±1.1	8.7% ±0.1	7.4% ±<0.1
Not citizens	330 ±159	1.8% ±0.9	7.1% ±0.2	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%.

Stonington town among the places and towns of Connecticut

66th of 168 places and towns of 5,000 or more by the survey’s 2020–2024 count. Every one is listed on the Connecticut page.

Places of Connecticut near Stonington town in population, ACS 2020–2024
Place	ACS 2020–⁠2024
Ansonia city	19,033 ±61
Monroe town	18,949 ±24
Avon town	18,946 ±30
Wilton town	18,777 ±24
East Lyme town	18,721 ±47
Stonington town	18,478 ±24
Wallingford Center CDP	18,208 ±1,034
Willimantic CDP	18,096 ±642
Montville town	17,950 ±45
Killingly town	17,867 ±21
Brookfield town	17,706 ±50

Rankings this appears in

No. 2 Places in Connecticut by median age
No. 21 Places in Connecticut by per capita income
No. 26 Places in Connecticut by median home value
No. 27 Places in Connecticut by poverty rate
No. 28 Places in Connecticut by median household income
No. 46 Places in Connecticut by median rent

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