FRED Series Data API

openapi: 3.0.3
info:
  title: FRED Maps API (GeoFRED) Categories Series Data API
  version: '1.0'
  description: GeoFRED (the FRED Maps API) exposes geographic / regional views of FRED economic data. Series-group metadata, regional-data lookups across geographies (state, county, MSA, country, census tract, etc.), and GeoJSON shape files for cartographic rendering of FRED indicators.
  contact:
    name: Federal Reserve Bank of St. Louis — Research Division
    url: https://fred.stlouisfed.org/docs/api/geofred/
  license:
    name: U.S. Government Work / Public Domain (most series)
    url: https://fred.stlouisfed.org/legal/
  termsOfService: https://fred.stlouisfed.org/legal/
  x-generated-from: documentation
  x-last-validated: '2026-05-28'
servers:
- url: https://api.stlouisfed.org/geofred
  description: Production GeoFRED API
security:
- ApiKeyAuth: []
tags:
- name: Series Data
  description: Regional data values attached to a specific FRED series.
paths:
  /series/data:
    get:
      operationId: getSeriesData
      summary: FRED Get Regional Data Values for a Series
      description: Get regional data values attached to a specific FRED series.
      tags:
      - Series Data
      parameters:
      - $ref: '#/components/parameters/ApiKey'
      - $ref: '#/components/parameters/FileType'
      - name: series_id
        in: query
        required: true
        schema:
          type: string
        description: The FRED series ID.
        example: UNRATE
      - name: date
        in: query
        schema:
          type: string
          format: date
        description: Date for the data values (YYYY-MM-DD). Defaults to the most recent.
        example: '2026-04-01'
      - name: start_date
        in: query
        schema:
          type: string
          format: date
        description: Optional start date for a range query.
        example: '2026-01-01'
      responses:
        '200':
          description: Regional data values for the series.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RegionalDataResult'
              examples:
                Getseriesdata200Example:
                  summary: Default getSeriesData 200 response
                  x-microcks-default: true
                  value:
                    meta:
                      title: 'All Employees: Total Nonfarm'
                      region: state
                      seasonality: Seasonally Adjusted
                      units: Thousands of Persons
                      frequency: Monthly
                      data:
                        '2026-04-01':
                        - region: California
                          code: '06'
                          value: 17920.5
                          series_id: CANA
                        - region: Missouri
                          code: '29'
                          value: 2960.1
                          series_id: MONA
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
components:
  schemas:
    RegionalDataResult:
      type: object
      description: A regional-data result wrapped by date.
      properties:
        meta:
          type: object
          properties:
            title:
              type: string
            region:
              type: string
            seasonality:
              type: string
            units:
              type: string
            frequency:
              type: string
            data:
              type: object
              additionalProperties:
                type: array
                items:
                  $ref: '#/components/schemas/RegionalDatum'
              description: Date-keyed map of regional values.
      required:
      - meta
    RegionalDatum:
      type: object
      description: A single regional data value.
      properties:
        region:
          type: string
          description: Region display name.
          example: example
        code:
          type: string
          description: Region code (FIPS
          ISO: null
          etc.).: null
          example: example
        value:
          type: number
          description: Indicator value.
          example: 4.0
        series_id:
          type: string
          description: Underlying FRED series ID.
          example: UNRATE
      required:
      - region
      - value
  parameters:
    ApiKey:
      name: api_key
      in: query
      required: true
      description: 32-character lower-case alphanumeric FRED API key.
      schema:
        type: string
        pattern: ^[0-9a-f]{32}$
      example: abcdef0123456789abcdef0123456789
    FileType:
      name: file_type
      in: query
      required: false
      description: Response format — json or xml.
      schema:
        type: string
        enum:
        - json
        - xml
        default: json
      example: json
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: query
      name: api_key
      description: 32-character lower-case alphanumeric FRED API key (same key used for the FRED API).