Connecticut · FIPS 09009
New Haven County, CT GIS & Parcel Viewer
Parcel lookups for New Haven County start at CT Parcel Viewer (CT GIS Office). This page gives you that official link, notes on how the viewer works, and links to the counties next door.
Open the New Haven County statewide map ↗
Opens experience.arcgis.com in a new tab. We link out and never embed or copy parcel data.
Map and county facts
| Official map | CT Parcel Viewer (CT GIS Office) |
|---|---|
| Type | Statewide map (covers all of Connecticut) |
| Website | experience.arcgis.com |
| Access | Free, no login (checked Oct 2026) |
| Population | 851,948 (2020 Census Bureau estimate) |
| Land area | 604 sq mi |
| FIPS code | 09009 |
About the official source
The link goes to a statewide map (CT Parcel Viewer (CT GIS Office)). It shows parcels for New Haven County along with the rest of Connecticut. Because a state agency compiles this layer from local data, check with the New Haven County assessor or recorder before relying on a recent change. As of our October 2026 test, anyone could open it without signing in or paying.
How to use the New Haven County viewer
- Open CT Parcel Viewer (CT GIS Office) in a new tab and zoom to New Haven County.
- Type a street address into the search box, or click directly on a parcel.
- Review the parcel attributes; field names vary by state.
- Confirm anything important with the county assessor, since the statewide layer is a compiled copy.
Rural addresses don't always geocode well. When that happens, zoom in by hand and click the parcel, or search by owner name.
New Haven County by the numbers
The U.S. Census Bureau estimated New Haven County's population at 851,948 in 2020, spread over about 604 square miles of land, or roughly 1,411 people per square mile. That makes it number 3 out of 8 Connecticut counties by population. Census maps also count about 258 square miles of water inside its boundary.
Nearby parcel maps
Parcels close to the edge of New Haven County can fall in the next county over. Neighboring counties:
Before you rely on the lines
Treat the map as a guide, not a boundary survey: parcel outlines are often shifted a bit from the real corners. A licensed surveyor settles exact lines.