Ansonia, CT

City in CT, US

By Neilsberg Research

Last updated May 1, 2026

Key Indicators

A quick look at key numbers

Population

19,033

Source: U.S. Census Bureau American Community Survey (ACS) 2020-2024 5-Year Estimates

Median Age

40.1

years ∙ half population younger than 40.1, half older

Diversity Index

62.7%

chance two random people differ in race and ethnicity

Nativity

20.1%

foreign-born population

79.9%Native

20.1% Foreign-born

Geographic Context

Location, size, and surroundings

About

Ansonia is a city in Connecticut, United States.

Location

City in CT, US

Co-ordinates

DEC41.344249° N, 73.069825° W

DMS41° 20′ 39.30″ N, 73° 04′ 11.37″ W

Population Density & area

3,162/sq mi (1,221/km²)

Total Area

6.19 sq mi (16.03 km²)

Land Area

6.02 sq mi (15.59 km²) · 97.3%

Water Area

0.17 sq mi (0.44 km²) · 2.7%

Demographics & Living

Who lives here, how households are formed, and community composition

Population Composition

Key characteristics of the population

Sex Distribution

48.5% male

Male 48.5%

Female 51.5%

males per 100 females

Ansonia 94.3

Connecticut 96.3

United States 98

Nativity

20.1%

foreign-born population

79.9%Native

20.1% Foreign-born

% Foreign-born

Ansonia 20.1%

Connecticut 15.7%

United States 14.1%

Age Distribution

How the population is spread across age groups

Median Age

40.1

years ∙ half population younger than 40.1, half older

Ansonia

40.1

Connecticut

41.1

United States

38.9

Dependency ratio

57.1

dependents per 100 working-age adults

Ansonia 57.1

Connecticut 63.1

United States 64.4

AGE DISTRIBUTION

Distribution of age group

Median age

	Ansonia	Connecticut	United States
Age Group
Children (Under 18)	18.3%	20.2%	22%
Working age (18-64)	63.6%	61.3%	60.8%
Senior (65+)	18.1%	18.5%	17.2%
Dependency ratio
Total dependency ratio	57.1	63.1	64.4
Child dependency ratio	28.7	32.9	36.1
Old-age dependency ratio	28.4	30.2	28.3

Racial & Ethnic Composition

Racial and ethnic makeup and how it compares

Race & Ethnicity

White

52.6%

Black

13.1%

Asian

Hispanic

27.7%

Other

4.6%

Note: White, Black, and Asian refer to individuals belonging to a single race and not of Hispanic origin. Hispanics may be of any race.

Diversity Index

62.7%

chance two random people differ in race and ethnicity

Ansonia 62.7%

Connecticut 57%

United States 61.4%

Note: The Diversity Index (DI), based on the Blau Index, measures the probability that two randomly selected individuals differ in race and ethnicity. Values range from 0 (no diversity) to 1 (high diversity) and are shown as percentages.

RACIAL & ETHNIC COMPOSITION

Race & Ethnicity

Percentage of Ansonia population

	Ansonia	Connecticut	United States
Hispanic or Latino	27.7%	18.3%	19.3%
Mexican	0.6%	1.8%	11.3%
Puerto Rican	11.1%	8.1%	1.8%
Cuban	0.2%	0.4%	0.8%
Other Hispanic / Latino	15.9%	8%	5.5%
Not Hispanic or Latino	72.3%	81.7%	80.7%
One race	68.1%	77.4%	76.4%
White	52.6%	61.9%	57.4%
Black or African American	13.1%	9.8%	11.9%
American Indian and Alaska Native	0.1%	0.1%	0.5%
Asian	2%	4.7%	5.9%
Native Hawaiian and Other Pacific Islander	0%	0%	0.2%
Some Other Race	0.3%	0.9%	0.6%
Two or more races (Multiracial)	4.2%	4.3%	4.3%

Household & Families Composition

Household size, type, and family structure

Household structure

67.1% family

Family 67.1%

Non family 32.9%

% family households

Ansonia 67.1%

Connecticut 64.3%

United States 64.2%

Average household size

2.64

persons per household

Ansonia

2.64

Connecticut

2.46

United States

2.53

Household & Family COMPOSITION

Households

Percentage of Ansonia population

	Ansonia	Connecticut	United States
Total households	7,212	1,434,007	129,227,496
Average houshold size	2.64	2.46	2.53
Family households	4,840	921,388	82,990,528
Average family size	3.23	3.05	3.14
Married couple family	2,852	668,528	60,637,388
Other families	1,988	252,860	22,353,140
Male householder	575	71,139	6,572,819
Female householder	1,413	181,721	15,780,321
Non-family households	2,372	512,619	46,236,968
One-person households	2,015	416,723	37,140,836
Male householder	899	177,260	16,871,444
Senior (65+) living alone	296	61,864	5,225,110
Female householder	1,116	239,463	20,269,392
Senior (65+) living alone	474	126,419	10,089,070
Other living arrangements	357	95,896	9,096,132

Housing Profile

Housing stock, ownership, rentals, and cost burdens

Total housing units

7,932

housing units

Ansonia 7,932

Connecticut 1,541,822

United States 143,775,355

Occupancy status

90.9% occupied

Occupied 90.9%

Vacant 9.1%

vacancy rate

Ansonia 9.1%

Connecticut 7%

United States 10.1%

Housing Characteristics

How the housing supply is structured and used

Types of Housing unit

52.7%

Single family houses

52.7%

Apartments in multi-unit structures

47.2%

Mobile homes

0.1%

Boat, RV, van, etc

Median Year Built

1954

Half of houses were built before 1954, and half after.

Historic ∙ 1939 or earlier

34.7%

Postwar & mid-century ∙ 1940 - 1969

42%

Late 20th century ∙ 1970 - 1999

16.7%

Modern ∙ 2000 or later

6.5%

Note: Median year built reflects occupied units only; distribution includes all units.

Housing Characteristics

Units, rooms & bedrooms

Physical characteristics of housing units

	Ansonia	Connecticut	United States
Rooms per unit
Median rooms	5.3	5.6	5.5
1–3 rooms	11.4%	14.9%	15.1%
4–6 rooms	65.3%	50.2%	51.6%
7+ rooms	23.5%	34.9%	33.4%
Bedrooms
No bedroom / studio	4.2%	2.8%	2.9%
1 bedroom	11.3%	12.7%	10.9%
2 bedrooms	29%	26.5%	25%
3 bedrooms	39.2%	35.9%	38.7%
4+ bedrooms	16.4%	22.1%	22.4%
At a glance
Median year built	1954	1968	1981
Total housing units	7,932	1,541,822	143,775,355

Occupancy Profile

Who is inside and how they use it

Homeownership

58.1% owners

Renter-occupied 41.9%

Owner-occupied 58.1%

homeownership rate

Ansonia 58.1%

Connecticut 66.5%

United States 65.2%

Average household size

2.67

Owner-occupied

2.58

Renter-occupied

owner-occupied average size

Ansonia 2.67

Connecticut 2.62

United States 2.64

Housing Characteristics

Occupied unit characteristics

Tenure, crowding, and utilities

	Ansonia	Connecticut	United States
Total occupied units	7,212	1,434,007	129,227,496
Year moved in
2020 or later	18.6%	21.8%	24.8%
2010 to 2019	43.3%	37.7%	39.6%
2000 to 2009	15.3%	17.4%	16.4%
1999 or earlier	22.9%	23.1%	19.1%
Occupants per room
1.00 or fewer	98%	97.9%	96.6%
1.01 to 1.50	2%	1.4%	2.2%
1.51 or more	0%	0.7%	1.2%
Vehicles availability
No vehicles	6.8%	8.8%	8.4%
1 vehicle	37.8%	33.4%	33.1%
2 vehicles	32.5%	37.2%	36.6%
3 or more vehicles	22.9%	20.7%	21.9%
House heating fuel used
Gas	62.8%	42.1%	51.4%
Electricity	13.8%	18.4%	41.3%
Solar	0.4%	0.2%	0.3%
Fuel oil, kerosene etc	22.3%	36.3%	3.9%
All other fuels	0.5%	2.4%	2%
No fuel used	0.2%	0.5%	1.2%
Selected characteristics
Lacking complete plumbing	0.3%	0.4%	0.4%
Lacking complete kitchen	0.6%	0.7%	0.8%
No telephone service available	1%	0.8%	0.9%

Housing Value

What owner-occupied units are worth

Median home value

$287,200

owner-occupied units

Median value(USD)

Ansonia

$287,200

Connecticut

$366,900

United States

$332,700

Housing Cost Burden

37.6%

of homeowners with a mortgage are cost-burdened

% Cost-Burdened Households

Owners with a mortgage

37.6%

Owners without a mortgage

30%

Renters

39.7%

Note: Households spending 30% or more of their income on housing costs are considered cost-burdened.

Financial characteristics

Property value and housing costs

Tenure, crowding, and utilities

	Ansonia	Connecticut	United States
Property value
Median Value	$287,200	$366,900	$332,700
Under $100,000	4.7%	3.9%	11.4%
$100,000 - $200,000	12.2%	10.2%	15.8%
$200,000 - $300,000	38.1%	21.5%	17.8%
$300,000 - $500,000	42.2%	36.8%	26.9%
$500,000 - $1,000,000	2.8%	20.8%	20.9%
$1,000,000 and more	0%	6.8%	7.1%
Owner-occupied households
With a mortgage	66.2%	64.6%	60.6%
Without a mortgage	33.8%	35.4%	39.4%
Median monthly owner costs
With a mortgage	$2,230	$2,429	$1,963
Without a mortgage	$928	$1,071	$638
Gross rent
Median rent	$1,476	$1,488	$1,413

Education Profile

How educated is the community and how education pays off

Adults with a college degree

21.9%

of adults 25+ with a bachelor's degree or higher

Ansonia 21.9%

Connecticut 42.5%

United States 35.7%

Adults without a high school diploma

10.3%

of adults (25+) without a high school diploma

Ansonia 10.3%

Connecticut 8.5%

United States 10.4%

School Enrollment

Who is enrolled in school and at what level

School enrollment

3,872

population (age 3+) enrolled in school

Nursery / Preschool

6.6%

K–12

62.9%

College / Undergraduate

22.9%

Graduate / Professional

7.6%

College-going rate (18-24 yr olds)

29%

of 18-24-year-olds in college or graduate school

Ansonia

29%

Connecticut

48%

United States

40.9%

Enrollment & school type

Enrollment levels, college-going rate, and public vs private school split

Population 3+ currently enrolled in a school

	Ansonia	Connecticut	United States
Total enrolled (age 3+)	3,872	865,814	80,089,790
Nursery / preschool	6.6%	5.9%	5.7%
K–12	62.9%	64.2%	67.6%
Kindergarten	4.2%	4.4%	5%
Elementary: Grades 1–4	17.1%	17.9%	19.8%
Elementary: Grades 5–8	19.5%	19.7%	21%
High School: Grades 9–12	22%	22.3%	21.7%
College or graduate school	30.4%	29.9%	26.7%
College, undergraduate	22.9%	22.6%	21%
Graduate, professional school	7.6%	7.3%	5.8%
College-going rate · 18-24 yr olds	29%	48%	40.9%
School type
Public school	79.9%	79.6%	82%
Private school	20.1%	20.4%	18%

Education Attainment by Level & Gender

What is the highest level of education completed among adults

Education attainment

13,671

population 25 years and over

Total adults (25+)

Less than 9th grade

5.8%

9th-12th, no diploma

4.5%

HS graduate

39%

Some college no degree

20.3%

Associates degree

8.5%

Bachelors degree

13%

Graduate or professional degree

8.9%

Attainment by gender

Male vs Female

Adults (25+) · Share within each education level

% male · % female

Less than 9th grade

37% · 63%

9th-12th, no diploma

44.4% · 55.6%

HS graduate

56.8% · 43.2%

Some college no degree

48.5% · 51.5%

Associates degree

38.1% · 61.9%

Bachelors degree

32.8% · 67.2%

Graduate or professional degree

36.1% · 63.9%

Educational Attainment Overview

Distribution and key education attainment rates for adults (25+)

Highest credential completed · adults 25+

	Ansonia	Connecticut	United States
Population (25+)	13,671	2,554,584	230,807,303
Less than 9th grade	5.8%	4%	4.7%
9th–12th, no diploma	4.5%	4.5%	5.7%
High school diploma or GED	39%	25.3%	26%
Some college, no degree	20.3%	16.1%	19.1%
Associate's degree	8.5%	7.6%	8.8%
Bachelor's degree or higher	21.9%	42.5%	35.7%
Bachelor's degree	13%	23.3%	21.6%
Graduate or professional	8.9%	19.2%	14.1%
High School or higher	89.6%	91.5%	89.6%

Earnings by education level

percentage as applicable

Median Earnings

$47,525

Median earnings for adults 25+, by level

Less than HS graduate

$31,222

HS graduate

$39,113

Some college or associates

$55,106

Bachelors degree

$44,613

Graduate or professional degree

$88,039

Poverty Rate

7.2%

for ages 25+, with bachelors degree or higher

Less than HS graduate

13.8%

HS graduate

9.8%

Some college or associates

8.5%

Bachelors degree or higher

7.2%

Outcomes by Education Level

Earnings and poverty rates across education levels (25+)

Adults 25+

	Ansonia	Connecticut	United States
Median earnings
Population 25+, with earnings	$47,525	$61,786	$52,696
Less than high school graduate	$31,222	$34,099	$32,485
High school graduate (includes equivalency)	$39,113	$44,726	$40,153
Some college or associate's degree	$55,106	$51,238	$47,260
Bachelor's degree	$44,613	$79,601	$70,044
Graduate or professional degree	$88,039	$99,061	$90,720
Poverty rates
Less than high school graduate	13.8%	24.8%	24.2%
High school graduate (includes equivalency)	9.8%	12.5%	14.4%
Some college or associate's degree	8.5%	8.6%	9.8%
Bachelor's degree or higher	7.2%	3.5%	4.5%

Insights for Ansonia, by topic

Income By year By race By age By gender

Population By year By race By age By gender

About Neilsberg Research

Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.

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