About Killingworth
What it's like to live here
Killingworth is a Middlesex County town of about 6,300 people covering nearly 36 square miles just north of Clinton. Route 81 is the main road through town, downtown Middletown is about 17 miles north, roughly 25 minutes, and I-95 in Clinton is about 12 minutes south. Most of the town is rural, with Chatfield Hollow State Park, parcels of Cockaponset State Forest and quiet back roads.
Killingworth was established from land called Hammonasset and named for Kenilworth, England, the former home of early settler Edward Griswold. The Rev. Abraham Pierson taught some of the first classes of what became Yale University in his Killingworth home, which today sits in Clinton, since the southern part of town separated as Clinton in 1838. Killingworth moved from New London County to the new Middlesex County in 1785, and it is the subject of Henry Wadsworth Longfellow's poem "The Birds of Killingworth."
Our Middletown office at 32 Washington Street is about 25 minutes north, and our headquarters is at 40 West High Street in East Hampton. Our agents live and sell here.
Killingworth Highlights
- Chatfield Hollow State Park, with a swimming beach on Schreeder Pond
- Parmelee Farm, 132 town-owned acres on Route 81
- Regional School District 17, shared with Haddam
- Hammonasset Beach State Park about 20 minutes south
Killingworth market at a glance
Killingworth real estate market
Year to date through August 2026, single-family homes in Killingworth sold for a median of $735,250, closed at a median of 102.5% of list price, and spent a median of 27 days on the market. At the end of August, 14 single-family homes were for sale (2.8 months of supply).
Written figures: SmartMLS Local Market Update, single-family, year to date through August 2026. Charts update automatically from SmartMLS, include all property types, and show rolling 12-month data.
Neighborhoods
Getting to know Killingworth
Route 81 Town Center
The civic heart of town, with Town Hall at 323 Route 81 and Haddam-Killingworth Intermediate and Middle Schools at 451 Route 81.
Parmelee Farm
A 132-acre farm on Route 81 bought by the town in 2000, with an 18th-century farmhouse, stone barn, trails and a pavilion for community events.
Chatfield Hollow
The valley along Route 80 where Chatfield Hollow State Park was developed by the Civilian Conservation Corps in the 1930s.
North Killingworth
The historic parish shared with North Madison, where Emmanuel Church, built in 1803, stands on Emmanuel Church Road off Route 148.
Beckwith Road
Rural western Killingworth just south of Route 148, home of the circa 1770 Parmelee House, listed on the National Register in 2007.
Green Hill Road
The Hammonasset River corridor on the Madison line, where the ruins of an 1865 paper mill sit on land trust property with hiking trails.
Buying or selling
Why Killingworth?
Why buy in Killingworth
- Downtown Middletown about 25 minutes north and I-95 in Clinton about 12 minutes south
- Regional School District 17 with Haddam: Killingworth Elementary, Haddam-Killingworth Intermediate and Middle Schools in town, and Haddam-Killingworth High School in Higganum
- Chatfield Hollow State Park: 412 acres with a swimming beach on Schreeder Pond, trout fishing, rock climbing and about 18 miles of trails
- Parmelee Farm, with fields and trails open dawn to dusk, a shared harvest garden and free summer concerts
- Hammonasset Beach State Park, Connecticut's largest shoreline park, about 9 miles south in Madison
Why sell in Killingworth now
- Single-family homes are selling in a median of 27 days (year to date through August 2026)
- Sellers are getting a median of 102.5% of list price
- The single-family median sale price is $735,250 year to date
- About 2.8 months of supply, still a seller's market
Questions
Killingworth real estate FAQ
What is the median home price in Killingworth, CT?
For single-family homes, $735,250 year to date through August 2026, according to the SmartMLS Local Market Update. The live charts above show the latest trend.
What is the property tax rate in Killingworth?
The mill rate for fiscal year 2026-27 is 28.47 for real estate, per the Town of Killingworth. That is $28.47 in tax per $1,000 of assessed value, and Connecticut assesses homes at 70% of market value.
How far is Killingworth from Middletown and New Haven?
Downtown Middletown is about 17 miles, roughly 25 minutes, to the north. Downtown New Haven is about 22 miles, roughly 35 minutes, via I-95 in Clinton.
What schools serve Killingworth?
Killingworth is part of Regional School District 17 with Haddam. Killingworth Elementary School (PreK-3), Haddam-Killingworth Intermediate School (4-5) and Haddam-Killingworth Middle School (6-8) are in Killingworth, and Haddam-Killingworth High School (9-12) is in Higganum.
Does Carl Guild & Associates have an office near Killingworth?
Yes. Our Middletown office at 32 Washington Street is about 25 minutes north, and our headquarters is at 40 West High Street in East Hampton. Call 860-474-3500.
Currently on the market
Homes for sale in Killingworth
Search the live MLS feed and filter to Killingworth to see everything available right now.
Nearby
Other towns in Middlesex County
Thinking about Killingworth?
Tell us what you're looking for and we'll send you Killingworth listings the day they hit the market, plus the ones we hear about first.