Census MCP Server
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| CENSUS_API_KEY | Yes | Your Census API key. Get one at https://api.census.gov/data/key_signup.html | |
| CENSUS_API_ENDPOINT | No | Optional. Census API endpoint URL. Default: https://api.census.gov/data/ |
Capabilities
Features and capabilities supported by this server
| Capability | Details |
|---|---|
| tools | {
"listChanged": true
} |
| resources | {
"listChanged": true
} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| acs_data_toolA | Retrieve demographic and economic data from the American Community Survey (ACS). Use this to get population statistics, household income, employment, education, housing data, and more. Supports both 1-year and 5-year estimates at various geographic levels. |
| decennial_census_toolA | Retrieve data from the U.S. Decennial Census (2020, 2010). Get complete population counts, demographics by race/ethnicity, age, sex, and housing unit data. The decennial census provides the most accurate population counts taken every 10 years. |
| population_estimates_toolA | Retrieve annual population estimates from the Population Estimates Program (PEP). Get current population counts by age, sex, race, and Hispanic origin. Updated annually with the most recent population estimates between decennial censuses. |
| county_business_patterns_toolA | Retrieve business statistics from County Business Patterns (CBP). Get establishment counts, employment, payroll data by industry (NAICS code), geography, and business size. Provides annual data on the number and types of businesses operating in the U.S. |
| economic_census_toolA | Retrieve comprehensive business statistics from the Economic Census (conducted every 5 years). Get establishments, employment, sales/receipts, payroll, and value added by industry (NAICS) and geography. The Economic Census is the most detailed source of facts about U.S. business economy. |
| geocoding_toolA | Convert addresses to coordinates or find Census geographies for an address/location. Returns latitude/longitude coordinates and all Census geographic hierarchies (state, county, tract, block, MSA, congressional district, etc.). Supports forward geocoding (address to coordinates) and reverse geocoding (coordinates to geographies). No API key required. |
| tigerweb_toolA | Retrieve geographic boundary polygons from TIGERweb as GeoJSON. Get actual boundary shapes for states, counties, tracts, block groups, and places. Returns standard GeoJSON FeatureCollection that can be used for mapping and spatial analysis. No API key required. |
| geoinfo_toolA | Retrieve geographic metadata and reference information from the Census Bureau Geographic Information API. Get land area, water area, internal point coordinates (centroid), and FIPS codes for geographic entities. Useful for geographic reference data, area calculations, and mapping coordinates. |
| health_insurance_toolA | Retrieve health insurance coverage estimates from the Small Area Health Insurance Estimates (SAHIE) program. Get single-year estimates of health insurance coverage status for all counties by selected economic and demographic characteristics. Data includes number and percentage of people with and without health insurance, by age group, income level, and race/ethnicity. Available from 2006 to present. |
| public_sector_toolA | Retrieve government employment and payroll statistics from the Annual Survey of Public Employment & Payroll. Get employment counts and payroll data for state and local governments. Data includes full-time and part-time employees, total hours worked, and payroll amounts. Supports filtering by government type (state, local, or combined). Available from 2017 to present. |
| poverty_statistics_toolA | Retrieve poverty estimates and median household income from the Small Area Income and Poverty Estimates (SAIPE) program. Get single-year estimates of people in poverty by age groups for states and counties. Data includes poverty counts, poverty rates, and median household income. The only source of data for single-year estimates of poverty for all U.S. counties. Available from 1989 to present. |
| rental_housing_toolA | Retrieve rental housing finance data from the Rental Housing Finance Survey (RHFS). Get financial, mortgage, and property characteristics of rental housing properties in the United States. Data includes property configuration, expenses, ownership and management, income and subsidies, finances and mortgage, and capital improvements. Filter by property size (1 unit, 2-4 units, 5-24 units, etc.). National-level data only. Available for years 2015, 2018, and 2021. |
| annual_business_survey_toolA | Retrieve business ownership data from the Annual Business Survey (ABS). Get comprehensive business statistics by owner demographics including sex, ethnicity, race, and veteran status. Data includes number of employer firms, employees, annual payroll, and receipts. The ABS replaced the Survey of Business Owners (SBO) and provides annual data from 2017 to present. Useful for analyzing business ownership patterns, diversity in entrepreneurship, and economic contributions by demographic groups. |
| community_resilience_toolA | Retrieve community resilience and social vulnerability data from the Community Resilience Estimates (CRE). Track how socially vulnerable every neighborhood is to disaster impacts. Data includes rates and counts of individuals with zero, one-two, or three-plus components of social vulnerability (disability, single-parent households, limited English, poverty, no vehicle, crowded housing, group quarters, age vulnerability). Perfect for neighborhood-level analysis, disaster preparedness assessment, and real estate applications. Available at tract level for detailed neighborhood insights. |
| international_database_toolA | Retrieve global population statistics from the U.S. Census Bureau International Database (IDB). Access population estimates and projections for 200+ countries worldwide from 1950 to 2100. Data includes total population, birth rates, death rates, life expectancy, fertility rates, age distributions, migration, and more. Perfect for international demographic analysis, global population trends, and country comparisons. |
| quarterly_workforce_indicators_toolA | Retrieve quarterly employment statistics from the Quarterly Workforce Indicators (QWI) program. Access 32+ economic indicators including employment levels, job creation/destruction, hires, separations, earnings, and turnover rates. Data available by worker demographics (age, sex, education, race/ethnicity), industry (NAICS), and firm characteristics (age, size). Covers 1990-present at state, county, metro area, and workforce investment board area levels. Essential for analyzing local job markets, wage trends, and employment dynamics. |
| business_dynamics_statistics_toolA | Retrieve annual business dynamics statistics (BDS) showing job creation, job destruction, establishment births/deaths, and firm startups/shutdowns. Track economic dynamism and business health from 1978-2023 at national, state, and metro/micro area levels. Filter by industry (NAICS), firm age, firm size, establishment age, and establishment size. Essential for understanding business environment, entrepreneurship rates, and economic vitality when evaluating areas. |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
| ACS Variables | Retrieve variable definitions for American Community Survey datasets. Lists all available variables with their labels, concepts, and groups. Use this to discover what data is available before querying with acs_data_tool. |
| Census Variables | Retrieve variable definitions for various Census datasets. Lists all available variables with their labels and descriptions. Use this to discover what data is available before querying with specific tools. |
| State FIPS Codes | List of all US state and territory FIPS codes. Use these codes when querying Census data at the state level. |
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