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Broadband Adoption by Tract 2025
Broadband and Internet Access Dataset — Tract-Level SummaryBroadband Subscription DataTotal broadband subscriptions across all technologiesTotal Residential broadband... -
Quaternary Geology
See full Data Guide here. Quaternary Geology Feature Set is 1:24,000-scale data that illustrates the geologic features formed in Connecticut during the Quaternary Period, which... -
Environmental Justice 2025 Set
Environmental Justice 2025 Set is comprised of two layers: Environmental Justice Block Groups 2024 and Environmental Justice Distressed Municipality 2025. All Census and ACS... -
Soils Farmland Classification
Farmland classification identifies map units as prime farmland, farmland of statewide importance, farmland of local importance, or unique farmland. It identifies the location... -
CT House Districts
This feature layer represents the boundaries of Connecticut's House of Representative’s districts based on the latest redistricting process following the 2020 Census. More... -
CTDOT Municipalities
The CT Municipalities layer consists of individual polygons representing each of the 169 municipalities that make up the state of Connecticut. This feature class is based on the... -
Surface Water Quality Polygon
See full Data Guide here. Surface Water Quality Classifications Set: This dataset is a line and a polygon feature-based layer compiled at 1:24,000 scale that includes water... -
CTDOT Office of the State Traffic Administration (OSTA) Interactive Map
Web Mapping Application containing all layers from the Office of the State Traffic Administration that enables the user to visually review, search, and query OSTA data,... -
Lake Bathymetry Contours Lines
See full Data Guide here. Lake Bathymetry describes the water depth for selected reservoirs, lakes, ponds, and coves in Connecticut. It includes depth contours, also called... -
Shellfish
Shellfish polygons were digitized from hand drawn polygons representing hardclam, softclam, and oyster beds produced by the Department of Agriculture from their records in 1990... -
Connecticut Railroads
Connecticut Railroads is a 1:24,000-scale, feature-based layer that includes railroad features on the U.S. Geological Survey (USGS) 7.5 minute topographic quadrangle maps for... -
Connecticut Parcels 2009
See full Data Guide here. Connecticut Parcels for Protected Open Space Mapping is a polygon feature-based layer that includes basic parcel-level information for some towns in... -
CTDOT Roadway Basemap
A custom basemap created for internal Connecticut Department of Transportation in web apps and maps.The basemap represents the most recent and active Public Road Network as... -
Broadband Availability by Block 2025
Broadband Availability Data — Block-Level SummaryWhat the dataset includesFor each Census block, the dataset provides:Location countsTotal broadband serviceable locationsNumber... -
Impaired 2006 River Lake Estuary Set
Connecticut 303(d) Impaired Waters 2006 is a subset of Connecticut 305(b) Assessed Waters 2006. If any one of the assigned designated uses is categorized as NOT Supporting, the... -
Connecticut State Parcel Layer 2023
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... -
Coastal Area Polygon
Coastal Area & Boundary Polygon: The Coastal Area layer is a 1:24,000-scale, polygon feature-based layer that includes the land and waters that lie within the Coastal Area... -
CT Congressional Districts
This feature layer represents the boundaries of Connecticut's congressional districts based on the latest redistricting process following the 2020 Census. More information about... -
Environmental Justice Block Groups 2024
Environmental Justice 2025 Set is comprised of two layers: Environmental Justice Block Groups 2024 and Environmental Justice Distressed Municipality 2025. All Census and ACS... -
ArchaeologyGrid
This layer denotes the presence of archaeology sites utilizing a grid based on the U.S. National Grid (10,000 m) divided into nine sections per 10,000 m grid. The red symbology...
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