2020 Cartographic Boundary File (SHP), Current State Legislative District-Upper Chamber for Connecticut, 1:500,000

The 2020 cartographic boundary shapefiles are simplified representations of selected geographic areas from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). These boundary files are specifically designed for small-scale thematic mapping. When possible, generalization is performed with the intent to maintain the hierarchical relationships among geographies and to maintain the alignment of geographies within a file set for a given year. Geographic areas may not align with the same areas from another year. Some geographies are available as nation-based files while others are available only as state-based files.

State Legislative Districts (SLDs) are the areas from which members are elected to State legislatures. The SLDs embody the upper (senate) and lower (house) chambers of the state legislature. Nebraska has a unicameral legislature and the District of Columbia has a single council, both of which the Census Bureau treats as upper-chamber legislative areas for the purpose of data presentation; there are no data by SLDL for either Nebraska or the District of Columbia. A unique three-character census code, identified by State participants, is assigned to each SLD within a state. In Connecticut, Illinois, Louisiana, Maine, Maryland, Massachusetts, Michigan, Ohio, and Puerto Rico, the Redistricting Data Program (RDP) participant did not define the SLDs to cover all of the state or state equivalent area. In these areas with no SLDs defined, the code "ZZZ" has been assigned, which is treated as a single SLD for purposes of data presentation.

The generalized boundaries in this file are based on the most recent state legislative district boundaries collected by the Census Bureau for the 2018 election year and provided by state-level participants through the RDP.

Data and Resources

Field Value
access_constraints ["Access_Constraints: None", "Use Constraints: The intended display scale for this file is 1:500,000. This file should not be displayed at scales larger than 1:500,000.\n\nThese products are free to use in a product or publication, however acknowledgement must be given to the U.S. Census Bureau as the source. The boundary information is for visual display at appropriate small scales only. Cartographic boundary files should not be used for geographic analysis including area or perimeter calculation. Files should not be used for geocoding addresses. Files should not be used for determining precise geographic area relationships."]
bbox-east-long -71.786994
bbox-north-lat 42.050587
bbox-south-lat 40.980144
bbox-west-long -73.727775
contact-email geo.geography@census.gov
coupled-resource []
dataset-reference-date [{"type": "publication", "value": "2023-05"}, {"type": "creation", "value": "2023-05"}, {"type": "lastUpdate", "value": "2023-05"}]
frequency-of-update notPlanned
guid cb_2020_09_sldu_500k.shp.iso.xml
licence []
metadata-date 2023-05
metadata-language eng; USA
metadata_type geospatial
old-spatial {"type": "Polygon", "coordinates": [[[-73.727775, 40.980144], [-71.786994, 40.980144], [-71.786994, 42.050587], [-73.727775, 42.050587], [-73.727775, 40.980144]]]}
progress completed
resource-type dataset
responsible-party [{"name": "U.S. Department of Commerce, U.S. Census Bureau, Geography Division, Customer Engagement Branch", "roles": ["pointOfContact"]}]
spatial {"type": "Polygon", "coordinates": [[[-73.727775, 40.980144], [-71.786994, 40.980144], [-71.786994, 42.050587], [-73.727775, 42.050587], [-73.727775, 40.980144]]]}
spatial-reference-system urn:ogc:def:crs:EPSG::4269
spatial_harvester true
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • 2020
  • AmeriGEO
  • AmeriGEOSS
  • CKAN
  • GEO
  • GEOSS
  • National
  • North America
  • United States
  • cartographic boundary
  • connecticut
  • ct
  • generalized
  • shp
  • state legislative district
  • upper chamber
isopen False
metadata_created 2025-09-23T16:51:22.944379
metadata_modified 2025-09-23T16:51:22.944386
notes The 2020 cartographic boundary shapefiles are simplified representations of selected geographic areas from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). These boundary files are specifically designed for small-scale thematic mapping. When possible, generalization is performed with the intent to maintain the hierarchical relationships among geographies and to maintain the alignment of geographies within a file set for a given year. Geographic areas may not align with the same areas from another year. Some geographies are available as nation-based files while others are available only as state-based files. State Legislative Districts (SLDs) are the areas from which members are elected to State legislatures. The SLDs embody the upper (senate) and lower (house) chambers of the state legislature. Nebraska has a unicameral legislature and the District of Columbia has a single council, both of which the Census Bureau treats as upper-chamber legislative areas for the purpose of data presentation; there are no data by SLDL for either Nebraska or the District of Columbia. A unique three-character census code, identified by State participants, is assigned to each SLD within a state. In Connecticut, Illinois, Louisiana, Maine, Maryland, Massachusetts, Michigan, Ohio, and Puerto Rico, the Redistricting Data Program (RDP) participant did not define the SLDs to cover all of the state or state equivalent area. In these areas with no SLDs defined, the code "ZZZ" has been assigned, which is treated as a single SLD for purposes of data presentation. The generalized boundaries in this file are based on the most recent state legislative district boundaries collected by the Census Bureau for the 2018 election year and provided by state-level participants through the RDP.
num_resources 4
num_tags 16
title 2020 Cartographic Boundary File (SHP), Current State Legislative District-Upper Chamber for Connecticut, 1:500,000