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Killingly, Connecticut Town Hall

Living in Killingly, Connecticut

It was incorporated in 1708 and, during the 1830s, was the state's largest producer of cotton goods. Danielson's Main Street, along Route 12, keeps much of its late-19th and early-20th-century commercial architecture.

Photo: Kenneth C. Zirkel, CC BY-SA 4.0

Killingly at a glance

Killingly's villages and zip codes

Danielson uses 06239; Dayville uses 06241 and East Killingly uses 06243.

Killingly villages and zip codes
AreaZip codeWhere it is
Danielson06239A borough and Killingly's commercial center, with Main Street (Route 12) as its historic downtown.
Dayville06241A village in the northern part of town with its own historic district along Main and Pleasant Streets.
East Killingly06243A village in the eastern part of town.

Killingly covers about 50.0 square miles and borders Putnam, Thompson, Plainfield, Sterling, Brooklyn and Pomfret. It was incorporated in 1708.

Things to do in Killingly, CT

Start with Danielson Main Street Historic District and Broad Street–Davis Park Historic District.

  1. Danielson Main Street Historic District

    A 20-acre historic district along Main Street with Colonial Revival and Italianate commercial architecture from the late 1800s and early 1900s. It's listed on the National Register of Historic Places.

    FreeHistoricYear-round

    Main Street, Danielson, CT

  2. Broad Street–Davis Park Historic District

    A residential historic district with Stick/Eastlake, Queen Anne and Colonial Revival houses, listed on the National Register in 1998.

    FreeHistoric

    Broad Street, Danielson, CT

A little history

Killingly was incorporated in May 1708; Connecticut's colonial governor Gurdon Saltonstall suggested the name after his family's ancestral home of Killingley (Kellingly) in Yorkshire, England.

During the 1830s Killingly was Connecticut's largest producer of cotton goods, running textile mills on cotton shipped from the American South; by the 1930s local mills were known for producing window curtains.

Parks, trails and outdoors in Killingly

Killingly's outdoor draws are its historic village centers and the Quinebaug River watershed rather than large state parks.

  • Quinebaug RiverThe river that runs through Killingly, historically the power source for the town's textile mills.

Walkability and getting around Killingly

Danielson's Main Street is walkable for a stretch of shops and historic buildings, but the outlying villages of Dayville, Attawaugan, East Killingly and South Killingly generally require a car.

Danielson

172 Main Street, Killingly, CT 06239

Check any Killingly address

Drive times

  • Putnam, about 6 miles10–15 min
  • Danielson Airport, about 2 miles5 min

Approximate, without traffic.

By bus or train

The Northeastern Connecticut Transit District provides bus service in the Killingly area; there is no passenger rail station in town.

Killingly property taxes and home prices

Killingly's 2026–27 mill rate is 21.86, which is $21.86 of tax for every $1,000 of assessed value. Some areas also pay a fire or special district tax on top of that. Connecticut taxes a home at 70% of its appraised value, so every $100,000 of value costs about $1,530 a year in taxes at 21.86 mills.

What homes in Killingly sell for

12 months endingSingle-familyCondo
Sep 2025$360,000184 sales$292,50018 sales

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

Killingly's mill rate for 2026–27

21.86mills, fiscal year 2026–27

  • Town of Killingly21.86 mills
  • Danielson Borough (where it applies)+3.59 mills
  • #1 Attawaugan Fire District (where it applies)+2.25 mills
  • #4 East Killingly Fire District (where it applies)+2.08 mills
  • #2 Dayville Fire District (where it applies)+2.00 mills
  • #7 South Killingly Fire District (where it applies)+1.79 mills
  • #6 Williamsville Fire Engine District (where it applies)+1.76 mills
  • Motor vehicles21.86 mills
  • Next revaluationOctober 1, 2028

Killingly property tax calculator

$
Assessed value (70%)
–
Taxes a year
–
About this much a month
–

Estimate only; the assessor's appraisal sets the bill.

Using our mortgage calculator or affordability calculator? Enter about 1.53% for property tax. That's 21.86 mills on a 70% assessment.

How Killingly's mill rate has changed

Killingly town mill rate by fiscal year
Fiscal yearTown rate
2022–2325.14
2023–2426.88
2024–2520.32
2025–2621.45
2026–2721.86

Killingly's town rate went from 25.14 in 2022–23 to 21.86 in 2026–27. Next revaluation: October 1, 2028.

Look up a Killingly property

Buying a home in Killingly

What we check on a Killingly purchase: CHFA limits, the flood map and older housing stock.

CHFA

First-time buyer programs in Killingly

CHFA sets Killingly's income and price limits for Windham County. We check them with you before you shop.

See CHFA's limits map
Flood maps

Check the flood zone first

The Quinebaug River, which runs through Killingly and powered its historic mills, puts low-lying parcels near Danielson and other riverside villages in FEMA flood zones. We check FEMA's map before you offer.

FEMA's flood map for Killingly
Older housing stock

Historic mill-town architecture

Danielson's Main Street and Broad Street areas include National Register historic districts with late-1800s and early-1900s buildings. Buyers in these districts should ask about any local historic-district review for exterior changes.

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 Killingly?

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

Compare loan optionsOur process

Moving to Killingly: utilities, trash and town offices

Who to call in Killingly: Eversource for power.

Town offices and contacts

Killingly Town Hall is at 172 Main Street, Killingly, CT 06239. Hours: Mon, Wed, Thu 8:00 AM–4:30 PM; Tue 8:00 AM–5:30 PM; Fri 8:00 AM–11:30 AM. Main line: 860-779-5300. Each link opens that office's page on the town's website.

Killingly, CT FAQ: taxes, prices and town services

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

What is the mill rate in Killingly, CT?

Killingly's 2026–27 mill rate is 21.86, which is $21.86 of tax for every $1,000 of assessed value. Some areas also pay a fire or special district tax on top of that. The motor vehicle rate is 21.86 mills.

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

Connecticut assesses homes at 70% of appraised value, so a $500,000 home would be assessed at about $350,000. At 21.86 mills that's about $7,651 a year, or about $638 a month, before any district tax. The actual bill depends on the town assessor's appraisal, not the price you pay.

What is the median home price in Killingly, CT?

In the 12 months from October 2024 through September 2025, the median single-family sale in Killingly was $360,000 across 184 sales. The median condo sale was $292,500 across 18 sales.

When is Killingly's next revaluation?

Killingly's next revaluation takes effect October 1, 2028, on the state's schedule. The new assessments first show up on the tax bills due in July 2029.

What county is Killingly in?

Windham County, in the Northeastern Connecticut Planning Region.

What ZIP code does Danielson use?

06239. Dayville uses 06241 and East Killingly uses 06243.

What are Town Hall's hours?

Monday, Wednesday and Thursday 8:00 AM–4:30 PM; Tuesday 8:00 AM–5:30 PM; Friday 8:00 AM–11:30 AM.

Is there an airport in Killingly?

Yes, Danielson Airport, a small state-owned public-use airport about two miles northwest of downtown Danielson.

Is there public transit in Killingly?

The Northeastern Connecticut Transit District runs bus service in the area; there is no passenger rail station in town.

Towns near Killingly

Neighbors of Killingly in Windham County and nearby. All Windham County towns.

Sources