openapi: 3.1.0
info:
  title: TIGERweb REST Services
  description: |
    ArcGIS REST endpoints that expose the canonical TIGER/Line geographic
    boundary layers — states, counties, census tracts, block groups, blocks,
    ZIP Code Tabulation Areas (ZCTAs), congressional districts, school
    districts, urban areas, and Public Use Microdata Areas — for current
    vintages and the 2010 and 2020 census decades.

    These are public ArcGIS Server endpoints; no API key is required. Spatial
    queries return GeoJSON, Esri JSON, KML, or PBF based on the `f` parameter.
  version: '2026-05-25'
  contact:
    name: Census Bureau Geography Division
    url: https://www.census.gov/programs-surveys/geography.html
  license:
    name: Public Domain
    url: https://www.usa.gov/government-works
servers:
- url: https://tigerweb.geo.census.gov/arcgis/rest/services
  description: TIGERweb ArcGIS REST production
tags:
- name: Catalog
  description: Service directory
- name: Current
  description: Current vintage TIGERweb services
- name: 2020
  description: 2020 census vintage services
- name: 2010
  description: 2010 census vintage services
paths:
  /:
    get:
      summary: List TIGERweb Service Catalog
      description: Returns the directory of folders and services hosted by the TIGERweb ArcGIS instance.
      operationId: getServiceCatalog
      tags:
      - Catalog
      parameters:
      - $ref: '#/components/parameters/FormatParam'
      responses:
        '200':
          description: Service catalog
          content:
            application/json:
              schema:
                type: object
  /TIGERweb/State_County/MapServer:
    get:
      summary: Get States And Counties Map Service
      description: Returns metadata for the State_County map service including layer list and capabilities.
      operationId: getStateCountyService
      tags:
      - Current
      parameters:
      - $ref: '#/components/parameters/FormatParam'
      responses:
        '200':
          description: Map service metadata
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MapServiceInfo'
  /TIGERweb/State_County/MapServer/{layerId}/query:
    get:
      summary: Query States And Counties Features
      description: |
        Spatial / attribute query against the State_County map service. Use
        layer 0 for states and layer 1 for counties.
      operationId: queryStateCountyLayer
      tags:
      - Current
      parameters:
      - $ref: '#/components/parameters/LayerIdParam'
      - $ref: '#/components/parameters/WhereParam'
      - $ref: '#/components/parameters/OutFieldsParam'
      - $ref: '#/components/parameters/GeometryParam'
      - $ref: '#/components/parameters/GeometryTypeParam'
      - $ref: '#/components/parameters/SpatialRelParam'
      - $ref: '#/components/parameters/InSRParam'
      - $ref: '#/components/parameters/OutSRParam'
      - $ref: '#/components/parameters/ReturnGeometryParam'
      - $ref: '#/components/parameters/FormatParam'
      responses:
        '200':
          description: Feature collection
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FeatureCollection'
  /TIGERweb/Tracts_Blocks/MapServer/{layerId}/query:
    get:
      summary: Query Census Tracts And Blocks Features
      description: Query census tract, block group, and block layers from the Tracts_Blocks service.
      operationId: queryTractsBlocksLayer
      tags:
      - Current
      parameters:
      - $ref: '#/components/parameters/LayerIdParam'
      - $ref: '#/components/parameters/WhereParam'
      - $ref: '#/components/parameters/GeometryParam'
      - $ref: '#/components/parameters/FormatParam'
      responses:
        '200':
          description: Feature collection
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FeatureCollection'
  /TIGERweb/PUMA_TAD_TAZ_UGA_ZCTA/MapServer/{layerId}/query:
    get:
      summary: Query PUMAs And ZIP Code Tabulation Areas
      description: Query PUMA, traffic analysis district/zone, urban growth area, and ZCTA layers.
      operationId: queryPumaZctaLayer
      tags:
      - Current
      parameters:
      - $ref: '#/components/parameters/LayerIdParam'
      - $ref: '#/components/parameters/WhereParam'
      - $ref: '#/components/parameters/FormatParam'
      responses:
        '200':
          description: Feature collection
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FeatureCollection'
  /Census2020/State_County/MapServer/{layerId}/query:
    get:
      summary: Query 2020 Census State And County Features
      description: Query the 2020 census vintage State_County map service.
      operationId: query2020StateCounty
      tags:
      - '2020'
      parameters:
      - $ref: '#/components/parameters/LayerIdParam'
      - $ref: '#/components/parameters/WhereParam'
      - $ref: '#/components/parameters/FormatParam'
      responses:
        '200':
          description: Feature collection
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FeatureCollection'
  /Census2010/State_County/MapServer/{layerId}/query:
    get:
      summary: Query 2010 Census State And County Features
      description: Query the 2010 census vintage State_County map service.
      operationId: query2010StateCounty
      tags:
      - '2010'
      parameters:
      - $ref: '#/components/parameters/LayerIdParam'
      - $ref: '#/components/parameters/WhereParam'
      - $ref: '#/components/parameters/FormatParam'
      responses:
        '200':
          description: Feature collection
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FeatureCollection'
components:
  parameters:
    LayerIdParam:
      name: layerId
      in: path
      required: true
      description: Numeric ArcGIS layer ID within the parent map service.
      schema:
        type: integer
    WhereParam:
      name: where
      in: query
      required: false
      description: SQL-like WHERE clause filtering attributes.
      schema:
        type: string
    OutFieldsParam:
      name: outFields
      in: query
      required: false
      description: Comma-separated list of fields to return (use `*` for all).
      schema:
        type: string
        default: '*'
    GeometryParam:
      name: geometry
      in: query
      required: false
      description: Geometry filter as JSON, envelope, point, polyline, or polygon.
      schema:
        type: string
    GeometryTypeParam:
      name: geometryType
      in: query
      required: false
      schema:
        type: string
        enum: [esriGeometryPoint, esriGeometryMultipoint, esriGeometryPolyline, esriGeometryPolygon, esriGeometryEnvelope]
    SpatialRelParam:
      name: spatialRel
      in: query
      required: false
      schema:
        type: string
        enum: [esriSpatialRelIntersects, esriSpatialRelContains, esriSpatialRelCrosses, esriSpatialRelEnvelopeIntersects, esriSpatialRelIndexIntersects, esriSpatialRelOverlaps, esriSpatialRelTouches, esriSpatialRelWithin]
        default: esriSpatialRelIntersects
    InSRParam:
      name: inSR
      in: query
      required: false
      description: Input spatial reference WKID.
      schema:
        type: integer
    OutSRParam:
      name: outSR
      in: query
      required: false
      description: Output spatial reference WKID.
      schema:
        type: integer
    ReturnGeometryParam:
      name: returnGeometry
      in: query
      required: false
      schema:
        type: boolean
        default: true
    FormatParam:
      name: f
      in: query
      required: false
      description: Output format.
      schema:
        type: string
        enum: [json, geojson, pjson, kmz, pbf, html]
        default: json
  schemas:
    MapServiceInfo:
      type: object
      properties:
        currentVersion:
          type: number
        serviceDescription:
          type: string
        mapName:
          type: string
        description:
          type: string
        copyrightText:
          type: string
        layers:
          type: array
          items:
            type: object
            properties:
              id:
                type: integer
              name:
                type: string
              type:
                type: string
        spatialReference:
          type: object
          properties:
            wkid:
              type: integer
            latestWkid:
              type: integer
    FeatureCollection:
      type: object
      properties:
        type:
          type: string
          example: FeatureCollection
        features:
          type: array
          items:
            type: object
            properties:
              type:
                type: string
              geometry:
                type: object
              properties:
                type: object