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Glacial erratic boulder in Osbornedale State Park in Derby

Living in Derby, Connecticut

Derby is a small city in New Haven County at the confluence of the Housatonic and Naugatuck rivers, about 8 miles west-northwest of New Haven. Settled in 1642 as the trading post Paugasset and renamed Derby in 1675, it became a city in 1893 and was home to New England's first electric trolley system.

Photo: Morrowlong, CC BY-SA 4.0

Derby at a glance

Derby's zip code

Derby is served by the 06418 zip code.

Derby villages and zip codes
AreaZip codeWhere it is
Downtown Derby06418The city center around Elizabeth Street and Main Street, including City Hall and the Birmingham Green Historic District.

Derby covers about 5.41 square miles and borders Ansonia, Shelton, Orange, Seymour and Woodbridge. It was incorporated in 1775.

Things to do in Derby, CT

Start with Derby Greenway and Osbornedale State Park, then 2 more below.

  1. Derby Greenway

    A paved riverfront trail along the Naugatuck and Housatonic rivers, used for walking, biking and fishing. It connects to the wider Naugatuck River Greenway system.

    FreeYear-round

    Derby, CT

  2. Osbornedale State Park

    A state park with picnic areas, a pond and hiking trails, including the Osborne Homestead Museum and the Kellogg Environmental Center on the grounds.

    FreeYear-round

    500 Hawthorne Ave, Derby, CT 06418

  3. Sterling Opera House

    A National Register landmark theater in downtown Derby that once hosted performers including Harry Houdini and Amelia Earhart; it now also houses the Derby Historical Society & Museum.

    Historic

    10 Elizabeth St, Derby, CT 06418

  4. Osborne Homestead Museum

    A historic house museum within Osbornedale State Park on the former estate of industrialist Frances Osborne Kellogg.

    Historic

    500 Hawthorne Ave, Derby, CT 06418

A little history

Derby was settled in 1642 as the trading post Paugasset and renamed Derby, after Derby, England, in 1675; it was incorporated as a town in 1775 and became a city in 1893.

Derby was home to New England's first electric trolley system, the second in the United States, and its industrial history included corset manufacturing, iron foundries and silver production.

The Naugatuck River crested at a record 25.70 feet above flood stage during the devastating flood of 1955, which struck Derby hard at the rivers' confluence.

Parks, trails and outdoors in Derby

Derby's outdoor space centers on its two rivers, with a paved greenway trail on one bank and a state park with trails and a pond a short drive away.

  • Derby GreenwayA paved trail along the Naugatuck and Housatonic rivers for walking, biking and fishing.
  • Osbornedale State ParkPicnic areas, a pond and hiking trails, including the Kellogg Environmental Center's grounds.

Where to eat in Derby: restaurants and coffee

2 places in Derby to try, including pizza restaurant and bakery, deli and pizza restaurant. No one paid to be listed.

Walkability and getting around Derby

Downtown Derby around Elizabeth and Main streets is walkable, with City Hall, the Sterling Opera House and a few restaurants close together, plus riverfront walking on the Derby Greenway. Outside downtown, most trips require a car.

Downtown Derby

1 Elizabeth St, Derby, CT 06418

Check any Derby address

Drive times

  • New Haven, about 8 miles15–20 min
  • Tweed New Haven Airport, about 13 miles20–25 min

Approximate, without traffic.

By bus or train

Valley Transit District (Valley bus service) serves Derby locally; the Derby-Shelton Metro-North station on the Waterbury Branch is just across the Housatonic River in Shelton.

Derby property taxes and home prices

Derby's 2026–27 mill rate is 38.44, which is $38.44 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 $2,691 a year in taxes at 38.44 mills.

What homes in Derby sell for

12 months endingSingle-familyCondo
Sep 2024$372,50066 sales$270,00050 sales
Sep 2025$360,00063 sales$287,50044 sales

October to September, state records. Text us for this month's sales.

Derby's mill rate for 2026–27

38.44mills, fiscal year 2026–27

  • Town of Derby38.44 mills
  • Motor vehicles32.46 mills
  • Next revaluationOctober 1, 2030

Derby property tax calculator

$
Assessed value (70%)
–
Taxes a year
–
About this much a month
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Estimate only; the assessor's appraisal sets the bill.

Using our mortgage calculator or affordability calculator? Enter about 2.69% for property tax. That's 38.44 mills on a 70% assessment.

How Derby's mill rate has changed

Derby town mill rate by fiscal year
Fiscal yearTown rate
2022–2338.60
2023–2438.60
2024–2543.20
2025–2643.20
2026–2738.44

Derby's town rate went from 38.60 in 2022–23 to 38.44 in 2026–27. Next revaluation: October 1, 2030.

Look up a Derby property

Buying a home in Derby

What we check on a Derby purchase: CHFA limits, the flood map and river confluence city.

CHFA

First-time buyer programs in Derby

CHFA sets Derby's income and price limits for New Haven County. We check them with you before you shop.

See CHFA's limits map
Flood maps

Check the flood zone first

Derby sits at the confluence of the Naugatuck and Housatonic rivers and has a history of major flooding, including the record 1955 flood; low-lying areas near both rivers fall within FEMA flood zones. We check FEMA's map before you offer.

FEMA's flood map for Derby
River confluence city

Check flood zone status near both rivers

Because Derby sits where the Naugatuck and Housatonic rivers meet and has a documented flood history, we check the FEMA flood map for any specific address near the riverfront before you make an offer.

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.

James Allen

Thinking about buying in Derby?

Send us a Derby address and we'll run the numbers, taxes included.

Compare loan optionsOur process

Moving to Derby: utilities, trash and town offices

Who to call in Derby: United Illuminating for power.

Town offices and contacts

Derby Town Hall is at 1 Elizabeth St, Derby, CT 06418. Hours: Monday–Wednesday 8:30am–5:00pm, Thursday 8:30am–6:00pm, Friday 8:30am–12:30pm. Main line: 203-736-1450. Each link opens that office's page on the town's website.

Derby, CT FAQ: taxes, prices and town services

The short answers. Call or text us for the long ones.

What is the mill rate in Derby, CT?

Derby's 2026–27 mill rate is 38.44, which is $38.44 of tax for every $1,000 of assessed value. The motor vehicle rate is 32.46 mills.

How much are property taxes on a $500,000 home in Derby?

Connecticut assesses homes at 70% of appraised value, so a $500,000 home would be assessed at about $350,000. At 38.44 mills that's about $13,454 a year, or about $1,121 a month. The actual bill depends on the town assessor's appraisal, not the price you pay.

What is the median home price in Derby, CT?

In the 12 months from October 2024 through September 2025, the median single-family sale in Derby was $360,000 across 63 sales, compared with $372,500 the year before. The median condo sale was $287,500 across 44 sales.

When is Derby's next revaluation?

Derby's next revaluation takes effect October 1, 2030, on the state's schedule. The new assessments first show up on the tax bills due in July 2031.

What county is Derby, CT in?

Derby is in New Haven County, within the Naugatuck Valley Planning Region.

What is Derby's zip code?

Derby's zip code is 06418.

How far is Derby from New Haven?

Derby is about 8 miles west-northwest of New Haven.

Is there train service near Derby?

The Derby-Shelton station on the Metro-North Waterbury Branch is just across the Housatonic River in Shelton.

Does Derby flood?

Derby sits at the confluence of the Naugatuck and Housatonic rivers and has a history of major floods, including a record 1955 flood; some low-lying areas are in FEMA flood zones.

Towns near Derby

Neighbors of Derby in New Haven County and nearby. All New Haven County towns.

Sources