3 counties indexed. ArcGIS FeatureServer and MapServer URLs, with supported search fields per layer.
| County | Endpoints | Searchable fields | Status | Action |
|---|---|---|---|---|
| Fairfield County | 1 | Town Name (REQUIRED filter — set to a Fairfield County town, e.g. Bridgeport, Stamford, Norwalk, Danbury, Fairfield, Westport) · Owner Name · Co-Owner Name +3 | LIVE | OPEN |
| Hartford County | 1 | Parcel ID · Town Name (filter to Hartford-area towns, e.g. Hartford, West Hartford, East Hartford) · Owner Name +3 | LIVE | OPEN |
| New Haven County | 1 | Town Name (REQUIRED filter — set to a New Haven County town, e.g. New Haven, Waterbury, Meriden, Milford, West Haven, Hamden) · Owner Name · Co-Owner Name +3 | LIVE | OPEN |
Connecticut abolished functioning county governments in 1960. The state's 169 towns are the unit of local government and the unit of parcel data. Each town has its own elected or appointed Assessor responsible for maintaining property records. There is no county assessor in Connecticut because there is no county government with administrative authority. The implication for GIS work is that parcel data is a town-reported dataset, not a county-reported one, and the statewide CAMA layer aggregates submissions from all 169 towns through a coordinated annual collection process.
Connecticut's Office of Policy and Management (OPM) coordinates an annual collection of parcel and CAMA (Computer Assisted Mass Appraisal) data from all 169 towns via the state's eight Regional Councils of Government (COGs). Each COG collects digital parcel files from its member municipalities and submits them to OPM by May 1 each year under Connecticut General Statutes Section 7-100l. OPM then aggregates the submissions into the Connecticut CAMA and Parcel Layer, published annually to data.ct.gov and geodata.ct.gov. The CT-ECO portal at maps.cteco.uconn.edu (a partnership between UConn and CT DEEP) also hosts the statewide parcel layer for GIS download. The 2024 layer is the current published dataset and is available as a REST FeatureServer covering all towns statewide.
The statewide Connecticut CAMA FeatureServer does not expose a county field because county is not an administrative unit. The operative filter is Town_Name. To query Hartford area parcels, filter by Town_Name='Hartford' or Town_Name='West Hartford' or another town name. What is labeled as 'Hartford County' in geographic references covers towns including Hartford, West Hartford, East Hartford, Manchester, Enfield, Bloomfield, Glastonbury, Newington, Windsor, Wethersfield, South Windsor, New Britain, Southington, and Bristol, among others. Each of those is a distinct entry in the Town_Name field.
The statewide layer is assembled from each town's CAMA export. Field completeness varies by town: larger towns (Hartford, New Haven, Stamford) tend to have fuller records with Sale_Date, Sale_Price, Living_Area, and condition codes populated. Smaller towns may submit only core fields. The Valuation_Year field indicates which grand list year each town's data comes from — not all towns are on the same cycle, so the layer can be a mix of 2022, 2023, and 2024 assessments depending on each town's revaluation schedule.
Connecticut law requires towns to assess real property at 70% of its fair market value as of the revaluation date. The Assessed_Total field in the statewide layer reflects this 70% figure. Full revaluations happen on a cycle that varies by town but is required at least every five years under state statute. The Appraised_Land and Appraised_Building fields, when populated, reflect the full fair market estimates before the 70% ratio is applied, making them more useful for market value comparisons than the assessed figures.
Hartford is a geographic county name (not an administrative unit) covering approximately 29 towns in the north-central part of the state, including Connecticut's capital city of Hartford. All 29 towns report to the statewide CAMA layer. Filter by Town_Name for any specific town. The statewide FeatureServer returns Owner, Co_Owner, Location_1, Assessed_Total, Sale_Price, and Sale_Date when populated. The layer index for parcels is /FeatureServer/0.
Hartford town owner search: ?where=Town_Name='Hartford'+AND+UPPER(Owner)+LIKE+UPPER('%25SMITH%25')&outFields=Parcel_ID,Town_Name,Owner,Location_1,Assessed_Total&returnGeometry=false&f=json. Multi-town search in Hartford area: ?where=Town_Name+IN+('Hartford','West Hartford','East Hartford')+AND+UPPER(Owner)+LIKE+UPPER('%25JONES%25')&outFields=Parcel_ID,Town_Name,Owner,Location_1,Assessed_Total,Valuation_Year&returnGeometry=false&f=json. Sale date range: ?where=Town_Name='Hartford'+AND+Sale_Date+>=+timestamp+'2023-01-01 00:00:00'&outFields=Parcel_ID,Owner,Sale_Price,Sale_Date&f=json.
Last updated 2026-05-24.
3 Connecticut counties are indexed in the UrbanKit atlas with verified public REST endpoints: Hartford, New Haven, and Fairfield. Each exposes an owner-name field you can search directly on the public layer.
Hartford, New Haven, and Fairfield expose an owner-name field on the public REST layer. Hartford, for example, uses the Owner field — a case-insensitive search is ?where=UPPER(Owner)%20LIKE%20UPPER('%25SMITH%25')&outFields=*&f=json. Open a county's page here for its full field list and a ready-to-run sample query.
Hartford publishes parcels at https://services3.arcgis.com/3FL1kr7L4LvwA2Kb/arcgis/rest/services/Connecticut_CAMA_and_Parcel_Layer_2024/FeatureServer/0 — a FeatureServer (layer 0). It indexes by Parcel ID, Town Name (filter to Hartford-area towns, e.g. Hartford, West Hartford, East Hartford), Owner Name, and Co-Owner Name. Owner-name search: UPPER(Owner) LIKE UPPER('%25SMITH%25').
Connecticut's indexed counties (Hartford, New Haven, and Fairfield) publish ArcGIS FeatureServer layers — the newer ArcGIS Online-hosted format. FeatureServer supports the /query operation for owner, parcel-ID, and address lookups.
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