Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content
This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

Connecticut State Parcel Layer 2023

Metadata Updated: November 15, 2025

The dataset has combined the Parcels and Computer-Assisted Mass Appraisal (CAMA) data for 2023 into a single dataset. This dataset is designed to make it easier for stakeholders and the GIS community to use and access the information as a geospatial dataset. Included in this dataset are geometries for all 169 municipalities and attribution from the CAMA data for all but one municipality. Pursuant to Section 7-100l of the Connecticut General Statutes, each municipality is required to transmit a digital parcel file and an accompanying assessor’s database file (known as a CAMA report), to its respective regional council of governments (COG) by May 1 annually. These data were gathered from the CT municipalities by the COGs and then submitted to CT OPM. This dataset was created on 12/08/2023 from data collected in 2022-2023. Data was processed using Python scripts and ArcGIS Pro, ensuring standardization and integration of the data.CAMA Notes:The CAMA underwent several steps to standardize and consolidate the information. Python scripts were used to concatenate fields and create a unique identifier for each entry. The resulting dataset contains 1,353,595 entries and information on property assessments and other relevant attributes.CAMA was provided by the towns.Canaan parcels are viewable, but no additional information is available since no CAMA data was submitted.Spatial Data Notes:Data processing involved merging the parcels from different municipalities using ArcGIS Pro and Python. The resulting dataset contains 1,247,506 parcels.No alteration has been made to the spatial geometry of the data.Fields that are associated with CAMA data were provided by towns.The data fields that have information from the CAMA were sourced from the towns’ CAMA data.If no field for the parcels was provided for linking back to the CAMA by the town a new field within the original data was selected if it had a match rate above 50%, that joined back to the CAMA.Linking fields were renamed to "Link".All linking fields had a census town code added to the beginning of the value to create a unique identifier per town.Any field that was not town name, Location, Editor, Edit Date, or a field associated back to the CAMA, was not used in the creation of this Dataset.Only the fields related to town name, location, editor, edit date, and link fields associated with the towns’ CAMA were included in the creation of this dataset. Any other field provided in the original data was deleted or not used.Field names for town (Muni, Municipality) were renamed to "Town Name".

Access & Use Information

Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: Creative Commons CCZero

Downloads & Resources

Dates

Metadata Created Date February 24, 2024
Metadata Updated Date November 15, 2025

Metadata Source

Harvested from Connecticut Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date February 24, 2024
Metadata Updated Date November 15, 2025
Publisher State of Connecticut
Maintainer
Identifier https://www.arcgis.com/home/item.html?id=b8d8b38c83c74a23a6595cfb7d4c839b&sublayer=0
Data First Published 2024-02-15
Data Last Modified 2025-05-01
Category geospatial
Public Access Level public
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.ct.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id b9283168-2ffd-4873-833c-fb879545bf77
Harvest Source Id 36c82f29-4f54-495e-a878-2c07320bf10c
Harvest Source Title Connecticut Data.json
Homepage URL https://geodata.ct.gov/datasets/ctmaps::connecticut-state-parcel-layer-2023
License https://creativecommons.org/publicdomain/zero/1.0
Metadata Type geospatial
Old Spatial -73.7278,40.9807,-71.7874,42.0506
Source Datajson Identifier True
Source Hash 2182fa66e66446956f8319e212b33fe4f59f10fcdd25faceb715c6be4d7d4f35
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -73.7278, 40.9807, -73.7278, 42.0506, -71.7874, 42.0506, -71.7874, 40.9807, -73.7278, 40.9807}

Didn't find what you're looking for? Suggest a dataset here.