United States Census Bureau website screenshot

United States Census Bureau

The U.S. Census Bureau is the nation's leading provider of quality data about its people and economy. The Census Bureau has been rolling out datasets via APIs, providing programmatic access to demographic, economic, housing, and social statistics. The Census Data API supports queries across datasets including the American Community Survey, Decennial Census, Population Estimates, County Business Patterns, Economic Census, and International Trade, with data available at national, state, county, tract, and block group geographic levels.

United States Census Bureau publishes 7 APIs on the APIs.io network, including American Community Survey API, County Business Patterns API, Decennial Census API, and 4 more. Tagged areas include Demographics, Federal Government, Open Data, Statistics, and Economics.

The United States Census Bureau catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

United States Census Bureau’s developer surface includes GitHub presence and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub
37.7/100 thin ▬ flat Agent 22/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemium
9 APIs
DemographicsFederal GovernmentOpen DataStatisticsEconomicsPopulation

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 37.7/100 · thin
Contract Quality 15.7 / 25
Developer Ergonomics 1.7 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.8 / 13
Governance 3.3 / 12
Discoverability 7.4 / 10
Agent readiness — 22/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/united-states-census-bureau: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 9

Individual APIs this provider publishes, each with its own machine-readable definition.

TIGERweb GeoServices REST API

The TIGERweb GeoServices REST API provides access to Census Bureau geographic data including boundaries for states, counties, census tracts, block groups, and other geographic e...

Census Geocoding Services

The Census Geocoding Services convert addresses to geographic coordinates and census geography identifiers. Supports both single-address lookups and batch geocoding for large ad...

United States Census Bureau American Community Survey API

ACS demographic, economic, social, and housing characteristics

United States Census Bureau County Business Patterns API

Business establishment and employment data

United States Census Bureau Decennial Census API

Decennial Census population and housing counts

United States Census Bureau Economic Census API

Economic activity by industry and geography

United States Census Bureau Geographic Services API

Geocoding and geographic boundary services

United States Census Bureau International API

International demographic and trade data

United States Census Bureau Population Estimates API

Annual population estimates and projections

Scroll for all 9

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Census Data API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

United States Census Bureau Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

United States Census Bureau Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

United States Census Bureau Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

United States Census Bureau Context

4 classes · 21 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

United States Census Bureau API Rules

8 rules · 2 errors 4 warnings 2 info

SPECTRAL

United States Census Bureau API Rules

5 rules · 3 warnings 2 info

SPECTRAL

JSON Schema 2

Standalone JSON Schema definitions for this provider's data models.

Census Geocoder Response

1 properties

JSON SCHEMA

Census Data API Response

0 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Census Data Api Response Structure

0 properties

JSON STRUCTURE

Examples 3

Example request and response payloads for these APIs.

Census Data Api Geocodeaddress Example

3 fields

EXAMPLE

Census Data Api Getacs5Year Example

3 fields

EXAMPLE

Census Data Api Getcountybusinesspatterns Example

3 fields

EXAMPLE

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

United States Census Bureau Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

United States Census Bureau Agentic Access

10 operations

10 operations · 0 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 APIKeySignup
APIKeySignup

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 LlmsText
LlmsText

Build 1

SDKs, sample code, and the tooling you integrate with

GitHub
GitHub

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Forums
Forums

Company 3

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Newsletter
Newsletter

Other 1

Properties that don't map to a standard resource type

DataExplorer
DataExplorer

Source (apis.yml)

apis.yml Raw ↑ 
aid: united-states-census-bureau
name: United States Census Bureau
description: The U.S. Census Bureau is the nation's leading provider of quality data about its people and economy. The Census
  Bureau has been rolling out datasets via APIs, providing programmatic access to demographic, economic, housing, and social
  statistics. The Census Data API supports queries across datasets including the American Community Survey, Decennial Census,
  Population Estimates, County Business Patterns, Economic Census, and International Trade, with data available at national,
  state, county, tract, and block group geographic levels.
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/united-states-census-bureau.png
url: https://raw.githubusercontent.com/api-evangelist/united-states-census-bureau/refs/heads/main/apis.yml
created: '2024-01-01'
modified: '2026-05-19'
specificationVersion: '0.19'
tags:
- Demographics
- Federal Government
- Open Data
- Statistics
- Economics
- Population
apis:
- aid: united-states-census-bureau:tigerweb-rest-api
  name: TIGERweb GeoServices REST API
  description: The TIGERweb GeoServices REST API provides access to Census Bureau geographic data including boundaries for
    states, counties, census tracts, block groups, and other geographic entities. Supports standard ArcGIS REST API queries
    for geographic features.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://tigerweb.geo.census.gov/tigerwebmain/TIGERweb_main.html
  baseURL: https://tigerweb.geo.census.gov/arcgis/rest/services
  tags:
  - Geography
  - GIS
  - Boundaries
  - Mapping
  properties:
  - type: Documentation
    url: https://tigerweb.geo.census.gov/tigerwebmain/TIGERweb_main.html
- aid: united-states-census-bureau:geocoding-api
  name: Census Geocoding Services
  description: The Census Geocoding Services convert addresses to geographic coordinates and census geography identifiers.
    Supports both single-address lookups and batch geocoding for large address lists.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://geocoding.geo.census.gov/geocoder/
  baseURL: https://geocoding.geo.census.gov/geocoder
  tags:
  - Geocoding
  - Geography
  - Address
  properties:
  - type: Documentation
    url: https://geocoding.geo.census.gov/geocoder/
  - type: BatchGeocoding
    url: https://www.census.gov/programs-surveys/geography/technical-documentation/complete-technical-documentation/census-geocoder.html
- aid: united-states-census-bureau:united-states-census-bureau-american-community-survey-api
  name: United States Census Bureau American Community Survey API
  description: ACS demographic, economic, social, and housing characteristics
  humanURL: https://www.census.gov/data/developers.html
  baseURL: https://api.census.gov/data
  tags:
  - American Community Survey
  properties:
  - type: OpenAPI
    url: openapi/united-states-census-bureau-american-community-survey-api-openapi.yml
  - type: Documentation
    url: https://www.census.gov/data/developers.html
  - type: APIKeySignup
    url: https://api.census.gov/data/key_signup.html
  - type: DataSets
    url: https://www.census.gov/data/developers/data-sets.html
  - type: DiscoveryTool
    url: https://www.census.gov/data/developers/updates/new-discovery-tool.html
  - type: UserGuide
    url: https://www.census.gov/data/developers/guidance/api-user-guide.html
  - type: ExampleQueries
    url: https://www.census.gov/data/developers/guidance/api-user-guide/example-api-queries.html
- aid: united-states-census-bureau:united-states-census-bureau-county-business-patterns-api
  name: United States Census Bureau County Business Patterns API
  description: Business establishment and employment data
  humanURL: https://www.census.gov/data/developers.html
  baseURL: https://api.census.gov/data
  tags:
  - County Business Patterns
  properties:
  - type: OpenAPI
    url: openapi/united-states-census-bureau-county-business-patterns-api-openapi.yml
  - type: Documentation
    url: https://www.census.gov/data/developers.html
  - type: APIKeySignup
    url: https://api.census.gov/data/key_signup.html
  - type: DataSets
    url: https://www.census.gov/data/developers/data-sets.html
  - type: DiscoveryTool
    url: https://www.census.gov/data/developers/updates/new-discovery-tool.html
  - type: UserGuide
    url: https://www.census.gov/data/developers/guidance/api-user-guide.html
  - type: ExampleQueries
    url: https://www.census.gov/data/developers/guidance/api-user-guide/example-api-queries.html
- aid: united-states-census-bureau:united-states-census-bureau-decennial-census-api
  name: United States Census Bureau Decennial Census API
  description: Decennial Census population and housing counts
  humanURL: https://www.census.gov/data/developers.html
  baseURL: https://api.census.gov/data
  tags:
  - Decennial Census
  properties:
  - type: OpenAPI
    url: openapi/united-states-census-bureau-decennial-census-api-openapi.yml
  - type: Documentation
    url: https://www.census.gov/data/developers.html
  - type: APIKeySignup
    url: https://api.census.gov/data/key_signup.html
  - type: DataSets
    url: https://www.census.gov/data/developers/data-sets.html
  - type: DiscoveryTool
    url: https://www.census.gov/data/developers/updates/new-discovery-tool.html
  - type: UserGuide
    url: https://www.census.gov/data/developers/guidance/api-user-guide.html
  - type: ExampleQueries
    url: https://www.census.gov/data/developers/guidance/api-user-guide/example-api-queries.html
- aid: united-states-census-bureau:united-states-census-bureau-economic-census-api
  name: United States Census Bureau Economic Census API
  description: Economic activity by industry and geography
  humanURL: https://www.census.gov/data/developers.html
  baseURL: https://api.census.gov/data
  tags:
  - Economic Census
  properties:
  - type: OpenAPI
    url: openapi/united-states-census-bureau-economic-census-api-openapi.yml
  - type: Documentation
    url: https://www.census.gov/data/developers.html
  - type: APIKeySignup
    url: https://api.census.gov/data/key_signup.html
  - type: DataSets
    url: https://www.census.gov/data/developers/data-sets.html
  - type: DiscoveryTool
    url: https://www.census.gov/data/developers/updates/new-discovery-tool.html
  - type: UserGuide
    url: https://www.census.gov/data/developers/guidance/api-user-guide.html
  - type: ExampleQueries
    url: https://www.census.gov/data/developers/guidance/api-user-guide/example-api-queries.html
- aid: united-states-census-bureau:united-states-census-bureau-geographic-services-api
  name: United States Census Bureau Geographic Services API
  description: Geocoding and geographic boundary services
  humanURL: https://www.census.gov/data/developers.html
  baseURL: https://api.census.gov/data
  tags:
  - Geographic Services
  properties:
  - type: OpenAPI
    url: openapi/united-states-census-bureau-geographic-services-api-openapi.yml
  - type: Documentation
    url: https://www.census.gov/data/developers.html
  - type: APIKeySignup
    url: https://api.census.gov/data/key_signup.html
  - type: DataSets
    url: https://www.census.gov/data/developers/data-sets.html
  - type: DiscoveryTool
    url: https://www.census.gov/data/developers/updates/new-discovery-tool.html
  - type: UserGuide
    url: https://www.census.gov/data/developers/guidance/api-user-guide.html
  - type: ExampleQueries
    url: https://www.census.gov/data/developers/guidance/api-user-guide/example-api-queries.html
- aid: united-states-census-bureau:united-states-census-bureau-international-api
  name: United States Census Bureau International API
  description: International demographic and trade data
  humanURL: https://www.census.gov/data/developers.html
  baseURL: https://api.census.gov/data
  tags:
  - International
  properties:
  - type: OpenAPI
    url: openapi/united-states-census-bureau-international-api-openapi.yml
  - type: Documentation
    url: https://www.census.gov/data/developers.html
  - type: APIKeySignup
    url: https://api.census.gov/data/key_signup.html
  - type: DataSets
    url: https://www.census.gov/data/developers/data-sets.html
  - type: DiscoveryTool
    url: https://www.census.gov/data/developers/updates/new-discovery-tool.html
  - type: UserGuide
    url: https://www.census.gov/data/developers/guidance/api-user-guide.html
  - type: ExampleQueries
    url: https://www.census.gov/data/developers/guidance/api-user-guide/example-api-queries.html
- aid: united-states-census-bureau:united-states-census-bureau-population-estimates-api
  name: United States Census Bureau Population Estimates API
  description: Annual population estimates and projections
  humanURL: https://www.census.gov/data/developers.html
  baseURL: https://api.census.gov/data
  tags:
  - Population Estimates
  properties:
  - type: OpenAPI
    url: openapi/united-states-census-bureau-population-estimates-api-openapi.yml
  - type: Documentation
    url: https://www.census.gov/data/developers.html
  - type: APIKeySignup
    url: https://api.census.gov/data/key_signup.html
  - type: DataSets
    url: https://www.census.gov/data/developers/data-sets.html
  - type: DiscoveryTool
    url: https://www.census.gov/data/developers/updates/new-discovery-tool.html
  - type: UserGuide
    url: https://www.census.gov/data/developers/guidance/api-user-guide.html
  - type: ExampleQueries
    url: https://www.census.gov/data/developers/guidance/api-user-guide/example-api-queries.html
common:
- type: AgenticAccess
  url: agentic-access/united-states-census-bureau-agentic-access.yml
- type: DomainSecurity
  url: security/united-states-census-bureau-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/us-census-bureau
- type: Website
  url: https://www.census.gov/
- type: DeveloperPortal
  url: https://www.census.gov/data/developers.html
- type: APIKeySignup
  url: https://api.census.gov/data/key_signup.html
- type: DataExplorer
  url: https://data.census.gov/
- type: GitHub
  url: https://github.com/uscensusbureau
- type: Forums
  url: https://apiforum.uscensusbureau.com/
- type: Newsletter
  url: https://public.govdelivery.com/accounts/USCENSUS/subscriber/new?topic_id=USCENSUS_11933
- type: LlmsText
  url: https://api.census.gov/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com