Connecticut · FIPS 09007
Middlesex County, CT GIS & Parcel Viewer
Here is the direct link to the statewide parcel map covering Middlesex County, CT: CT Parcel Viewer (CT GIS Office). Below you'll find basic facts about the county, steps for using the viewer, and nearby counties.
Open the Middlesex 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 | 161,657 (2020 Census Bureau estimate) |
| Land area | 369 sq mi |
| FIPS code | 09007 |
Who runs this map
This is a statewide map, not a county site. CT Parcel Viewer (CT GIS Office) covers parcels across Connecticut, and Middlesex County is one part of it. Statewide parcel layers are usually stitched together from county files, so the newest splits or sales may show up on the county's own records first. As of our October 2026 test, anyone could open it without signing in or paying.
How to use the Middlesex County viewer
- Open the statewide map with the button above.
- Search for an address in Middlesex County, or zoom to the county on the map.
- Click a parcel to see the attributes the state layer includes.
- Write down the parcel number and use it for records searches with the Middlesex County assessor or recorder.
Rural addresses don't always geocode well. When that happens, zoom in by hand and click the parcel, or search by owner name.
About Middlesex County
Middlesex County had an estimated 161,657 residents in 2020, according to the Census Bureau. With about 369 square miles of land, that works out to roughly 438 people per square mile. That makes it number 6 out of 8 Connecticut counties by population. Census maps also count about 70 square miles of water inside its boundary.
Counties next to Middlesex County
Middlesex County shares a border with the counties below. Each link has its own official map:
Maps vs. surveys
The lines you see online are approximate. They're good for finding a lot and its parcel number, but a legal boundary question needs the recorded plat or a surveyor.