Is Ansonia, CT growing?

Name: Growth in Ansonia, CT, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Ansonia, CT had an estimated 19,033 (±61) residents in 2020–2024, against 18,802 in 2015–2019.

That is a change of +1.2%, a measurable increase.

Its housing went from 8,728 to 7,932 homes (−9.1%), a measurable decrease.

0.0% of today’s homes were built in 2020 or later.

Figures last updated on November 12, 2026.

Residents now: 19,033 (±61)
Amount of change: +1.2%
Homes change: −9.1%
Built 2020 or later: 0.0%

Residents and homes in Ansonia, 2015–2019 and 2020–2024

2015–2019 and 2020–2024 American Community Survey 5-year estimates
	2015–2019	2020–2024	Amount of change	Verdict
Residents	18,802 (±48)	19,033 (±61)	+1.2%	Measurable increase
Housing units	8,728 (±543)	7,932 (±519)	−9.1%	Measurable decrease
Households that rent	40.6% (±4.2 points)	41.9% (±5.3 points)	+1.3 percentage points	Not a measurable change
Median gross rent	$1,101 (±$50)	$1,476 (±$121)	+34.1%	No measurable change after inflation
Median home value	$214,200 (±$9,012)	$287,200 (±$14,207)	+34.1%	Up after inflation

The Census Bureau publishes 2015–2019 dollars in 2019 dollars and 2020–2024 dollars in 2024 dollars.

Prices (the CPI-U, US Bureau of Labor Statistics) rose 22.7% between 2019 and 2024, so a dollar figure’s verdict compares the two after raising the earlier one by that much, using the Census Bureau’s test for a difference.

The two periods do not overlap, as the Census Bureau recommends for 5-year estimates.

Growth in Ansonia against Naugatuck Valley Planning Region, its state and the nation

Change between 2015–2019 and 2020–2024
	Residents	Verdict	Housing units
Ansonia	+1.2%	Measurable increase	−9.1%
Naugatuck Valley Planning Region	—	—	—
Connecticut	+1.4%	Measurable increase	+1.7%
United States	+3.1%	Measurable increase	+4.6%

A change in a place’s boundaries between the two periods (an annexation, say) changes its counts as well; the Census Bureau’s figures are for the place as it was drawn in each period.

New homes in Ansonia

Housing units by year built, 2020–2024
Year built	Ansonia	Naugatuck Valley Planning Region	Connecticut	United States
2020 or later	0.0% (±0.5 points)	0.6%	0.7%	2.0%
2010 to 2019	1.9% (±1.3 points)	3.3%	4.5%	9.4%
2000 to 2009	4.6% (±1.7 points)	7.1%	7.1%	13.6%

1.9% of the homes in Ansonia were built in 2010 or later.

The median age of residents is 40.1 years.

Growth in places near Ansonia

Change in residents between 2015–2019 and 2020–2024
Place	Distance	Residents now	Amount of change	Verdict
Ansonia	—	19,033	+1.2%	Measurable increase
Derby	1.4 mi	12,487	0.0%	Not a measurable change
Seymour	2.9 mi	16,889	+2.3%	Measurable increase
Woodbridge	3.7 mi	9,073	+2.8%	Measurable increase
Shelton	4.5 mi	41,889	+1.8%	Measurable increase
Orange	4.7 mi	14,315	+2.7%	Measurable increase
Orange (community)	4.7 mi	14,315	+2.7%	Measurable increase
Bethany	6.7 mi	5,288	−4.1%	Measurable decrease
Beacon Falls	6.9 mi	6,147	−0.3%	Not a measurable change

Survey years: 2020–2024 (American Community Survey 5-year estimates), compared with 2015–2019.

Margins of error are at the 90% confidence level.

What you can do on Seayora in Ansonia

One account for renting, owning, managing and fixing homes, with these figures beside you.

Own or manage a rental?

List it, sign the lease and collect rent online, with the figures for Ansonia beside you.

Create a landlord account · See what landlords get

Looking for a place to rent?

Browse homes for rent near Ansonia, save the ones you like and apply online.

Browse rentals · Create a renter account

Do repairs, renovations or maintenance?

Get found by owners and renters near Ansonia, and send estimates and invoices from your phone.

Join as a pro · Find a pro

Questions about Ansonia

Is Ansonia growing?

Ansonia, CT had an estimated 19,033 residents in 2020–2024 and 18,802 in 2015–2019, a change of +1.2%: a measurable increase by the Census Bureau’s test.

How many homes have been added in Ansonia?

The estimated number of housing units went from 8,728 in 2015–2019 to 7,932 in 2020–2024 (−9.1%), a measurable decrease.

How much new construction is there in Ansonia?

0.0% of homes in Ansonia were built in 2020 or later and 1.9% between 2010 and 2019.

Sources

To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) for Ansonia town, Naugatuck Valley Planning Region, Connecticut (county subdivision:01220, in state:09 county:140).

Each estimate (E or PE) has a margin of error beside it (M or PM).

The 2015–2019 figures are B01003_001E, B01003_001M, B25001_001E, B25001_001M, DP04_0047PE, DP04_0047PM, B25064_001E, B25064_001M, B25077_001E, B25077_001M from the 2019 release.

The API needs a free key.

Request a Census API key.

DP05_0001E, DP05_0001M, DP04_0001E, DP04_0001M, DP04_0017PE, DP04_0017PM, DP04_0018PE, DP04_0018PM, DP05_0018E, DP05_0018M

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.