Municipal Parcel Files

Connecticut's Regional Councils of Governments (COGs) collect digital parcel files and basic property ownership data from each of their member municipalities annually by May 1st, pursuant to Section 7-100l of the Connecticut General Statutes. OPM, through the voluntary cooperation of the COGs, obtains copies of these datasets and makes them available for public download.

Data received from the COGs are compressed into .zip files and can be downloaded via the links below.  OPM does not edit, redact, or aggregate any of the parcel data files received from the COGs.  The spatial accuracy and completeness of the data can vary by COG and by municipality.  It is expected that municipal parcel files conform to Level 1 or higher of the Cadastral Data Standard.

For the most recent parcel and assessment data, contact the COG or municipality directly.

2020 Digital Parcel Files by Region

Capitol Region

Connecticut River Valley

Metropolitan Region

Naugatuck Valley

Northeastern Connecticut

Northwest Hills

South Central Connecticut

Southeastern Connecticut

Western Connecticut