Open Data

Census ACS MCP Server

Connect your account, then chat with AI to run tools.

Census American Community Survey API providing population, income, poverty, education, race/ethnicity, insurance, and housing data at state, county, tract, and block group levels.

2 tools
Agent guide included
Start Chatting

Opens MCPBundles Studio with this server selected. After sign-in, chat and run tools from the same thread.

Browse all tools

AI Skill
SKILL.md

Domain knowledge for Census ACS — workflow patterns, data models, and gotchas for your AI agent.

Census ACS

Census ACS (American Community Survey) provides population, income, poverty, education, race/ethnicity, insurance, housing data at state/county/tract/block group levels. 5-Year estimates (2009-2023) most reliable for small areas. 1-Year estimates for areas 65K+ population. Key variables: B01003 (total pop), B19013 (median income), B17001 (poverty), B15003 (education). Use for= geography parameter and in= containment.

Data Model

  • Variables — identified by table and column (e.g. B01003_001E = total population estimate). Suffix _E = estimate, _M = margin of error.
  • Geographies — hierarchical: nation → state → county → tract → block group. Use FIPS codes.
  • Datasets — acs/acs5 (5-year), acs/acs1 (1-year), acs/acs3 (3-year, discontinued after 2013).
  • Tables — B-tables (detailed), C-tables (collapsed), S-tables (subject), DP-tables (data profiles).

Gotchas

  • Geography syntaxfor=state:* (all states), for=county:*&in=state:06 (all CA counties).
  • Variable limits — max 50 variables per request.
  • JSON array response — returns a 2D array where first row is headers, not a JSON object.
  • Year in URL — dataset year is part of the URL path: /data/2023/acs/acs5.

Tools in this Server (2)

Census Acs Get Data

Get American Community Survey data from the Census Bureau. Returns population, income, poverty, education, housing, and demographic data. Response is ...

Census Acs Get Variables

Look up available ACS variable codes by searching variable labels. Use this to find the right variable codes before calling census_acs_get_data. Retur...

Frequently Asked Questions

What is the Census ACS MCP server?

Census American Community Survey API providing population, income, poverty, education, race/ethnicity, insurance, and housing data at state, county, tract, and block group levels. It provides 2 tools that AI agents can use through the Model Context Protocol (MCP).

How do I connect Census ACS to my AI agent?

Add the MCPBundles server URL to your MCP client configuration (Claude Desktop, Cursor, VS Code, etc.). The URL format is: https://mcp.mcpbundles.com/bundle/census-acs. Authentication is handled automatically.

How many tools does Census ACS provide?

Census ACS provides 2 tools that can be called by AI agents, along with a SKILL.md that gives your AI agent domain knowledge about when and how to use them.

What authentication does Census ACS require?

Census ACS uses API Key. Census ACS requires credentials. Connect via MCPBundles and authentication is handled automatically.

Setup Instructions

Connect Census ACS to any MCP client in minutes

https://mcp.mcpbundles.com/bundle/census-acs

What is MCP?

Model Context Protocol lets AI tools call external capabilities securely through a single URL. This bundle groups tools behind an MCP endpoint that many clients can use.

Use this bundle in 3 steps

  1. Copy the MCP URL above
  2. Open your AI tool and add a new MCP/connector
  3. Paste the URL and follow any auth prompts

Claude Desktop Users

Skip the manual setup! Use the .mcpb file format for one-click installation. Check the Claude Desktop tab for setup instructions.

Pick your tool tab for exact steps

Select ChatGPT, Cursor, Claude Code, or another tab for copy-paste config.

Ready to use Census ACS?

Sign in to connect your credentials and start running tools from the chat.

Census ACS MCP Server & Skill — 2 Tools