Homes for Sale in Danielson

Danielson is the part of Killingly that most people picture when they picture Killingly — Main Street, the courthouse, the storefronts, the three-deckers. What almost nobody realizes is that it's a separate municipal government with its own charter, its own council, and its own tax rate stacked on top of Killingly's.

I've sold in this town for years and I still meet buyers at closing who had no idea. So let's start there, because it's the single most expensive thing to find out late.

The borough adds 3.59 mills to your tax bill

If the house is inside the Borough of Danielson, you pay two mill rates:

On a house assessed at $150,000, the borough portion is about $539 a year on top of the town bill. Not enormous. But it's real, it's permanent, and it doesn't show up in most online tax estimates.

The good news is you get one bill. The Borough contracts with Killingly to do its collecting, so it arrives from Town Hall like everything else. That makes Danielson the exception to Killingly's own rule — the town collects for itself, for the Borough, and for South Killingly Fire District, and tells you plainly it can't collect for the other fire districts.

Killingly has seven other fire districts — Attawaugan, Dayville, Dyer Manor, East Killingly, Orient Heights, Williamsville and South Killingly — each with its own small mill rate, most billed separately. The Borough isn't one of them. It has its own fire department and its own government.

One caution on that 25.45 figure. The Borough's budget narrative says the rate stays at 3.59, and the charter requires the council to set it within ten days of the annual April meeting. I haven't seen the minutes confirming that vote. If you're building a budget around it, call the Borough at (959) 895-3805 and have them confirm.

A "Danielson" address doesn't mean you're in the Borough

This is the trap, and it catches people constantly.

The Borough of Danielson is 1.09 square miles. The Danielson ZIP code — 06239 — covers a big share of a town that runs 48.35 square miles. Killingly Town Hall, the school district office, the community college and Danielson Airport all use Danielson mailing addresses. The airport is a proven case: the Connecticut Airport Authority describes it as sitting about two miles northwest of Danielson, in the Town of Killingly. Danielson address, outside the borough.

So when a listing says "Danielson," that tells you the mail carrier's route. It doesn't tell you whether you're paying 25.45 mills or 21.86. Ask the assessor which taxing district the parcel is in. It's a two-minute phone call and it's worth $500 a year.

What that 1.09 square miles actually looks like

Run those numbers and you get the thing that actually defines Danielson: 23% of Killingly's people live on 2% of its land. Roughly ten times the density of the town around it.

That's why it feels like a different place when you drive in off Route 6. It is one.

A note on the demographics panel on this page: it reports about 11,600 people, because it's built on the postal "Danielson" area rather than the borough line. That's the same confusion this section is about. The Borough of Danielson itself counted 4,155 people in the 2020 Census.

The housing stock is genuinely different

Rural Killingly is single-family houses on acreage. The borough isn't, and the Census numbers are stark about it.

Just about half the borough's housing is two-family, three-decker, or a small apartment building — 48.2% is two units or more. And there's nothing above fifty units anywhere in it. This is a dense neighborhood built out of small buildings, not a place with apartment towers.

A few more numbers that follow from that:

• Owner-occupied: 53.0% in the borough, against 71.6% for Killingly as a whole
• Median year built: 1951
• Median owner-occupied value: $224,600 in the borough, against $288,600 town-wide

If you're buying an investment property in this market, that mix is the reason people look here first. If you're buying a house to live in and you want a quarter acre and quiet, you probably want to be looking a few miles out.

One number that surprised me and I'm going to give you straight rather than skip: median gross rent in the borough is $1,235, which is higher than Killingly's town-wide $1,044. Home values here are lower and rents are higher. That's a mix effect — the borough's rentals are more often purpose-built apartments, and town-wide numbers absorb cheaper rural units — but I'd rather show you the odd number than pretend the story is tidier than it is.

All of those are Census ACS five-year estimates with real margins of error on a place this small. Treat them as the shape of the market, not as an appraisal.

Danielson has its own zoning rulebook

This one matters if you're planning to do anything to the property.

The Borough has a separate set of zoning regulations from the Town of Killingly, with districts that don't exist anywhere else in town: Residential Medium, Residential High, General Commercial, Central Business District, Industrial, and a Flood Hazard District.

The Town administers them — the charter hands the planning and zoning function to Killingly — but the rules are Danielson's own. So if you're evaluating a multifamily conversion, an accessory apartment, or a storefront with units above it, the Town's zoning regulations are the wrong document. You need the Borough's.

Two kinds of historic district, and only one of them can cost you money

Danielson has three historic designations and they are not the same thing. Getting this wrong is expensive.

National Register districts — honorary. The Danielson Main Street Historic District (listed 1992) and the Broad Street–Davis Park Historic District (listed 1998). National Register listing is recognition. It doesn't restrict what you do to your house, and it can open the door to certain tax credits.

The local historic district — regulatory. The Danielson Historic District at Academy Street, established 1987, is administered by the Killingly Historic District Commission. Inside it, exterior work — new construction, renovations, demolition — needs a Certificate of Appropriateness from the commission.

Windows, doors, siding, porches. If the house you're looking at is in that district, that's a real constraint on your renovation plans and your timeline.

The published boundary descriptions are approximate. Before you write an offer on anything near Academy Street, have the commission confirm whether the specific address is in or out.

The courthouse

The Windham Judicial District courthouse and G.A. No. 11 are both at 120 School Street, and between them they serve fifteen towns: Ashford, Brooklyn, Canterbury, Chaplin, Eastford, Hampton, Killingly, Plainfield, Pomfret, Putnam, Scotland, Sterling, Thompson, Windham and Woodstock.

That's the reason downtown Danielson has the density of professional offices it does for a village of four thousand people. Lawyers, bail bonds, title work. If you're buying commercial or mixed-use here, that's your tenant base.

(The juvenile court for this area is in Willimantic, not here.)

Schools — and a structural fact worth knowing before you tour houses

Killingly doesn't have neighborhood attendance zones. The district runs district-wide grade-level schools, so every child in town goes to the same building for a given grade regardless of address. Buying in Danielson versus buying in Dayville doesn't change your school assignment.

District total: 2,392 students across four schools, PK–12 (NCES, 2024-25). Preschool runs through the Goodyear Early Childhood Center in Rogers.

Killingly Memorial, grades 2 through 4, is the one school with a Danielson street address.

Flood zones along the Quinebaug

The Quinebaug River forms the borough's western edge — it's also the Killingly/Brooklyn town line. Parts of Danielson along it sit in FEMA special flood hazard areas.

The Borough of Danielson is its own NFIP community, separate from the Town of Killingly, and current flood maps took effect September 7, 2023. The Borough's own Flood Hazard District regulations require new residential construction to have the lowest floor — including the basement — elevated to at least one foot above base flood elevation, and require pilings or columns rather than fill so the floodplain keeps its storage capacity.

I'm not going to tell you which streets are in the zone, because street-level claims about flood maps are how people end up with a surprise at underwriting. Look the specific address up on FEMA's Flood Map Service Center before you get attached to a house.

The sewer moratorium — ask before you plan anything

Killingly's Water Pollution Control Authority put a sewer moratorium in place in 2024, and posted updated information in January 2025. There's been reporting since about it being relaxed under certain conditions.

I'm being deliberately vague here because the town's documents on it are posted as scans I can't read cleanly, and I'm not going to guess at what a moratorium covers when the answer determines whether somebody's addition gets built.

What I'll tell you is this: if anything about your plan depends on a new or expanded sewer connection, call the Killingly WPCA and get the current status in writing before you go under contract. Not after inspection. Before.

Getting around, and what's actually here

• No passenger rail. Connecticut runs three passenger lines — the New Haven Line, the Hartford Line and Shore Line East — and none of them come to northeastern Connecticut. If you see a reference to a Danielson train station, it's historical.
• Danielson Airport (KLZD) is general aviation only — one 2,700-foot runway, owned by the Connecticut Airport Authority, with a flight school and seasonal skydiving. No commercial service. And it's outside the borough line, in the Town of Killingly.
• Day Kimball Hospital is in Putnam, about ten miles north, at 320 Pomfret Street. What's here in Danielson are Day Kimball's outpatient offices on Green Hollow Road — family medicine, dermatology, blood draws, physical medicine and rehab.
• Parks: Davis Park on Broad Street, with the town green and gazebo on Main; Danielson Lions Park at 65 Lewis Boulevard; the Mitchell D. Phaiah Dog Park at 94 Quinebaug Drive; and the Quinebaug River Trail, which starts at the junction of Routes 12 and 6 and runs along the river.

Who Danielson actually suits

Buyers who want walkability in a market that mostly doesn't offer it. You can get to the courthouse, the green, the trail and a row of storefronts on foot, which is not true of anywhere else in Killingly.

Investors, because half the housing stock is two-to-nine-unit buildings and the entry prices are lower than the town median.

It suits you less if what you came to the Quiet Corner for is land. Go four miles in any direction and you'll find it, at the town's mill rate instead of the borough's.

Thinking of Selling in Danielson?

If you own here, the two things that move your number most are the ones nobody puts in an online estimate: which taxing district you're in, and whether the building is a single-family or a two-family that's been used as one. Automated valuations get both wrong here regularly.

Send me the address and I'll come back with actual comparable sales rather than a computer's guess. If you'd like to see what that looks like first, the home valuation page is the place to start — and it's also worth reading why an automated price struggles in a market this small, because Danielson closes few enough homes in a year that the algorithms genuinely don't have much to work with.

Questions I get about Danielson

Sources and dates

Mill rates: Town of Killingly Revenue Collector, rate set June 17, 2026 (21.86, Grand List October 1, 2025); Borough of Danielson FY2026-27 budget narrative (3.59 mills); CT OPM mill rate dataset for prior years. Borough status and government: Borough of Danielson charter effective March 19, 1987; CT General Assembly OLR Report 98-R-0660; U.S. Census Bureau TIGERweb (Danielson borough, GEOID 0918780, active incorporated place); Federal Register Doc. 2023-07679 (April 12, 2023). Population and land area: 2020 Decennial Census table P1; Census TIGERweb. Housing: American Community Survey 2020-2024 five-year estimates, tables B25003, B25024, B25035, B25064 and B25077 for Danielson borough; Census QuickFacts for Killingly town. Schools: NCES Common Core of Data, 2024-25; Killingly Public Schools. Courthouse: CT Division of Criminal Justice, Windham Judicial District; Office of Chief Public Defender. Zoning: Town of Killingly, Borough of Danielson Zoning Regulations. Historic districts: National Register of Historic Places, Windham County; Local Historic District and Property Commissions in Connecticut; Killingly Historic District Commission. Flood: Borough of Danielson Zoning Section 460, Flood Hazard District (August 21, 2023); FEMA flood hazard determinations, FIRMs effective September 7, 2023. Airport: Connecticut Airport Authority. Rail: CTDOT Office of Rail. Parks: Town of Killingly Parks & Recreation.

Last updated August 2026. Census ACS figures are five-year estimates and carry margins of error; the Borough's FY2026-27 mill rate is taken from its approved budget narrative and should be confirmed with the Borough at (959) 895-3805 before being relied on. Tax, flood and zoning status vary by parcel — verify any specific address with the Killingly assessor, the Borough, and FEMA's Flood Map Service Center.