Downtown Ansonia
253 Main St, Ansonia, CT 06401
Living in Ansonia, Connecticut
Ansonia is a small city on the Naugatuck River in the Naugatuck Valley, about 12 miles northwest of New Haven. It was founded in 1844 by merchant Anson Green Phelps as a company town for brass manufacturing, and a flood wall now runs along the river through downtown, built after the Flood of 1955 sent the Naugatuck over its banks.
Ansonia at a glance
- $385,000Median single-family sale, Oct 2024 – Sep 2025
- 29.46 millsReal estate tax rate, fiscal year 2026–27
- 20-25 minDrive to New Haven
- New HavenCounty
Ansonia's zip code
Ansonia uses a single ZIP code, 06401, for the entire city.
| Area | Zip code | Where it is |
|---|---|---|
| Downtown Ansonia | 06401 | Main Street between the Naugatuck River and City Hall, the city's commercial core. |
Ansonia covers about 6.02 square miles and borders Derby, Seymour and Woodbridge. It was incorporated in 1889.
Things to do in Ansonia, CT
Start with Ansonia Nature & Recreation Center and Nolan Field.
Ansonia Nature & Recreation Center
A 156-acre park of wooded hills, streams and a two-acre pond laced with about 2.5 miles of nature trails. The visitor center has nature exhibits and resident animal ambassadors, and the park hosts a Creature Feature program most Saturdays and a guided hike most Sundays.
10 Deerfield Rd, Ansonia, CT
Plan a visit to Ansonia Nature & Recreation Center (opens in a new tab)Nolan Field
A city sports complex with baseball, softball and soccer fields, tennis courts, a playground and a walking trail. It hosts community events and youth sports tournaments through the year.
Ansonia, CT
A little history
Merchant Anson Green Phelps founded the settlement in 1844 to house workers for his brass and copper mills, and the city takes his name.
Ansonia native Pierre Lallement is credited with building an early bicycle here in 1866, one of the first in the United States.
The Flood of 1955, caused by Hurricane Diane, sent the Naugatuck River over its banks and devastated the Naugatuck Valley; a flood-control wall now runs along the river through the city.
Parks, trails and outdoors in Ansonia
Most of Ansonia's outdoor recreation centers on the Naugatuck River valley and the wooded hillsides above it.
- Ansonia Nature & Recreation Center156 acres of trails, ponds and wet meadows with fishing at Redwing Pond (anglers under 16 don't need a license).More information
- Nolan FieldBall fields, tennis courts and a walking trail in a city sports complex.
Walkability and getting around Ansonia
Downtown Main Street is walkable block to block, with City Hall, the library and storefronts within a few blocks of each other. Most residential neighborhoods on the hills above the river are built for driving, without continuous sidewalks.
Drive times
- New Haven, about 12 miles20-25 min
Approximate, without traffic.
By bus or train
CTtransit and Valley Transit's Route 255 runs along Route 34 connecting Ansonia to the Derby-Shelton area, Seymour and New Haven.
Ansonia property taxes and home prices
Ansonia's 2026–27 mill rate is 29.46, which is $29.46 of tax for every $1,000 of assessed value. Connecticut taxes a home at 70% of its appraised value, so every $100,000 of value costs about $2,062 a year in taxes at 29.46 mills.
What homes in Ansonia sell for
| 12 months ending | Single-family | Condo |
|---|---|---|
| Sep 2024 | $369,00090 sales | – |
| Sep 2025 | $385,00093 sales | – |
October to September, state records. Text us for this month's sales.
Ansonia's mill rate for 2026–27
29.46mills, fiscal year 2026–27
- Town of Ansonia29.46 mills
- Motor vehicles29.46 mills
- Next revaluationOctober 1, 2026
How Ansonia's mill rate has changed
| Fiscal year | Town rate |
|---|---|
| 2022–23 | 37.80 |
| 2023–24 | 26.24 |
| 2024–25 | 26.49 |
| 2025–26 | 28.55 |
| 2026–27 | 29.46 |
Ansonia's town rate went from 37.80 in 2022–23 to 29.46 in 2026–27. Next revaluation: October 1, 2026.
Look up a Ansonia property
- FEMA flood mapWhether a lender will require flood insurance
- Assessor's officeQuestions about an assessment
Buying a home in Ansonia
Things to look into on a Ansonia purchase: CHFA limits, the flood map and river flood zones.
CHFA home loans in Ansonia
CHFA sets income and purchase price limits town by town, and some census tracts are Targeted Areas with different rules. We check them with you before you shop.
See CHFA's limits map (opens in a new tab)Check the flood zone first
The Naugatuck River runs through the middle of the city; a flood-control wall along the east bank was built after the 1955 flood, and low-lying areas near the river remain in FEMA flood zones. We take an early look at FEMA's map before you offer. That's not a flood determination: the official determination ordered with your loan decides whether flood insurance is required.
FEMA's flood map for Ansonia (opens in a new tab)Check FEMA maps near the Naugatuck
Parts of Ansonia along the Naugatuck River are in mapped flood zones despite the flood-control wall built after 1955. We check the flood map before you make an offer on anything near the river.
All loans are subject to credit approval, underwriting, and property and program requirements. CHFA and USDA limits and eligibility are set by those agencies and change from time to time.
Thinking about buying in Ansonia?
Send us a Ansonia address and we'll run the numbers, taxes included.
Moving to Ansonia: utilities, trash and town offices
Who to call in Ansonia: Eversource for power.
- ElectricEversource
- Trash and recyclingThe city offers curbside collection, and residents can also bring waste directly to the city transfer station with proof of residency.
Ansonia Transfer Station
North Division Street, Ansonia, CT 06401 Monday through Saturday
Transfer station details (opens in a new tab)Town offices and contacts
Ansonia Town Hall is at 253 Main St, Ansonia, CT 06401. Hours: Mon-Wed 8:30-4:30, Thu 8:30-5:00, Fri 8:30-1:00. Main line: (203) 736-5900. Each link opens that office's page on the town's website.
Ansonia, CT FAQ: taxes, prices and town services
The short answers. Call or text us for the long ones.
What is the mill rate in Ansonia, CT?
Ansonia's 2026–27 mill rate is 29.46, which is $29.46 of tax for every $1,000 of assessed value. The motor vehicle rate is 29.46 mills.
How much are property taxes on a $500,000 home in Ansonia?
Connecticut assesses homes at 70% of appraised value, so a $500,000 home would be assessed at about $350,000. At 29.46 mills that's about $10,311 a year, or about $859 a month. The actual bill depends on the town assessor's appraisal, not the price you pay.
What is the median home price in Ansonia, CT?
In the 12 months from October 2024 through September 2025, the median single-family sale in Ansonia was $385,000 across 93 sales, compared with $369,000 the year before.
When is Ansonia's next revaluation?
Ansonia's next revaluation takes effect October 1, 2026, on the state's schedule. The new assessments first show up on the tax bills due in July 2027.
What county is Ansonia in?
New Haven County, in the Naugatuck Valley.
What ZIP code does Ansonia use?
06401, for the entire city.
How do I get rid of trash and bulky items?
The city offers curbside collection, and residents can also use the transfer station on North Division Street with proof of residency.
What are City Hall's hours?
Monday-Wednesday 8:30 a.m.-4:30 p.m., Thursday 8:30 a.m.-5:00 p.m., Friday 8:30 a.m.-1:00 p.m.
Towns near Ansonia
Neighbors of Ansonia in New Haven County and nearby. All New Haven County towns.
Sources
- Mill rates: Connecticut Office of Policy and Management, "Mill Rates for FY 2014–2027," data.ct.gov. Revaluation year: OPM, Revaluation Schedule 2023–2037.
- Home sales: "Real Estate Sales 2001–2024 GL," data.ct.gov. Medians use Ansonia sales recorded October 1 to September 30, leaving out sales the town flagged as non-market.
- Ansonia, Connecticut - Wikipedia: en.wikipedia.org
- City of Ansonia official website: cityofansonia.com
- Ansonia Nature & Recreation Center: ansonianaturecenter.org
- Ansonia Public Works Transfer Station info: cityofansonia.com
- Ansonia station - Wikipedia: en.wikipedia.org
- Ansonia Library - Wikipedia: en.wikipedia.org
- Walkability: Walk Score® ratings, Bike Score® and Transit Score® ratings, provided live by Walk Score. Addresses are located with the U.S. Census Bureau geocoder.
- Checked September 25, 2026.