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State
2020 Census Tracts
State of Oregon —
This data layer is an element of the Oregon GIS Framework. The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and... -
State
Oregon ZIP Codes
State of Oregon —
US Postal Service Zone Improvement Plan (ZIP) Codes are used throughout the United States to improve mail delivery. There are 479 unique 5-digit ZIP Codes in Oregon... -
State
California Counties
State of California —
This layer contains the boundaries for California’s 58 counties. County features are derived from the US Census Bureau's 2023 TIGER/Line database and have been... -
State
CA Congress Districts and Membership 2024-2026
State of California —
The 119th Congressional Districts dataset reflects boundaries from January 03, 2025 from the United States Census Bureau (USCB), and the attributes are updated every... -
State
Correctional Institutions
State of Oregon —
Jails and Prisons (Correctional Institutions). The Jails and Prisons sub-layer is part of the Emergency Law Enforcement Sector and the Critical Infrastructure... -
State
Environmental Justice Block Groups 2023
State of Connecticut —
Environmental Justice 2023 Set is comprised of two layers: Environmental Justice Block Groups 2023 and Environmental Justice Distressed Municipality 2023. All Census... -
State
California School District Areas 2024-25
State of California —
This layer serves as the authoritative geographic data source for all school district area boundaries in California. School districts are single purpose governmental... -
State
2020 Census Block
State of Oregon —
This data layer is an element of the Oregon GIS Framework. The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and... -
State
CT Congressional Districts
State of Connecticut —
This feature layer represents the boundaries of Connecticut's congressional districts based on the latest redistricting process following the 2020 Census. More... -
State
i16 Census Tract EconomicallyDistressedAreas 2023
State of California —
The IRWM web based EDA mapping tool uses this GIS layer. Created by joining ACS 2019-2023 5 year estimates to the 2020 Census Tract feature class. The TIGER/Line... -
State
California Schools and Legislative Districts
State of California —
This web map of California legislative districts includes the geographically defined territories used for representation in the California State Assembly, California... -
State
California State Boundary
State of California —
The state boundary for California is derived from the US Census Bureau's 2018 TIGER/Line database -
State
Legislative Lookup for California Schools and Districts
State of California —
This spreadsheet identifies the legislative districts assigned to California's K-12 public school sites and school district areas. Legislative districts assignments... -
State
California School District Areas 2021-22
State of California —
This layer serves as the authoritative geographic data source for all school district area boundaries in California. School districts are single purpose governmental... -
State
California School District Areas 2023-24
State of California —
This layer serves as the authoritative geographic data source for all school district area boundaries in California. School districts are single purpose governmental... -
State
CT House Districts
State of Connecticut —
This feature layer represents the boundaries of Connecticut's House of Representative’s districts based on the latest redistricting process following the 2020 Census.... -
State
California Overlapping Cities and Counties and Identifiers
State of California —
WARNING: This is a pre-release dataset and its fields names and data structures are subject to change. It should be considered pre-release until the end of 2024.... -
State
California County Boundaries and Identifiers
State of California —
Note: The schema changed in February 2025 - please see below. We will post a roadmap of upcoming changes, but service URLs and schema are now stable. For deployment... -
State
Connecticut State Parcel Layer 2023
State of Connecticut —
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... -
State
i16 Census Place DisadvantagedCommunities 2023
State of California —
The IRWM web based DAC mapping tool uses this GIS layer. Created by joining ACS 2019-2023 5 year estimates to the 2020 Census Place feature class. A Census Place is a...