FIPS (Federal Information Processing Standard) codes are numbers used by the government to uniquely identify states, counties, and places. E.g., California is 06, Los Angeles County is 037.

Which census survey do you use?

We use the American Community Survey (ACS) 5-Year estimates, which provide the most reliable, detailed, and broad demographic data annually.

Are undocumented immigrants counted?

Yes, the Census Bureau attempts to count all residents regardless of immigration status, though this group is historically harder to count accurately.

U.S. Census Population — Demographics, Age & Diversity MCP Server for LlamaIndex 5 tools — connect in under 2 minutes

Name: U.S. Census Population — Demographics, Age & Diversity
Availability: InStock
Author: Vinkius

docs.llamaindex.ai/en/stable/module_guides/tools/mcp

Built by Vinkius GDPR 5 Tools Framework

LlamaIndex specializes in data-aware AI agents that connect LLMs to structured and unstructured sources. Add U.S. Census Population — Demographics, Age & Diversity as an MCP tool provider through Vinkius and your agents can query, analyze, and act on live data alongside your existing indexes.

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python

import asyncio
from llama_index.tools.mcp import BasicMCPClient, McpToolSpec
from llama_index.core.agent.workflow import FunctionAgent
from llama_index.llms.openai import OpenAI

async def main():
    # Your Vinkius token. get it at cloud.vinkius.com
    mcp_client = BasicMCPClient("https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp")
    mcp_tool_spec = McpToolSpec(client=mcp_client)
    tools = await mcp_tool_spec.to_tool_list_async()

    agent = FunctionAgent(
        tools=tools,
        llm=OpenAI(model="gpt-4o"),
        system_prompt=(
            "You are an assistant with access to U.S. Census Population — Demographics, Age & Diversity. "
            "You have 5 tools available."
        ),
    )

    response = await agent.run(
        "What tools are available in U.S. Census Population — Demographics, Age & Diversity?"
    )
    print(response)

asyncio.run(main())

U.S. Census Population — Demographics, Age & Diversity

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About U.S. Census Population — Demographics, Age & Diversity MCP Server

U.S. Census demographic data.

LlamaIndex agents combine U.S. Census Population — Demographics, Age & Diversity tool responses with indexed documents for comprehensive, grounded answers. Connect 5 tools through Vinkius and query live data alongside vector stores and SQL databases in a single turn. ideal for hybrid search, data enrichment, and analytical workflows.

5 Tools

State Population — View 50 states + DC
County Population — Drill down into counties
City/Place Population — Get local data
State Demographics — Race and ethnicity by state
County Demographics — Race and ethnicity by county

Authentication

Requires a free API key from the Census Bureau.

The U.S. Census Population — Demographics, Age & Diversity MCP Server exposes 5 tools through the Vinkius. Connect it to LlamaIndex in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect U.S. Census Population — Demographics, Age & Diversity to LlamaIndex via MCP

Follow these steps to integrate the U.S. Census Population — Demographics, Age & Diversity MCP Server with LlamaIndex.

Install dependencies

Run pip install llama-index-tools-mcp llama-index-llms-openai

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token

Run the agent

Save to agent.py and run: python agent.py

Explore tools

The agent discovers 5 tools from U.S. Census Population — Demographics, Age & Diversity

Why Use LlamaIndex with the U.S. Census Population — Demographics, Age & Diversity MCP Server

LlamaIndex provides unique advantages when paired with U.S. Census Population — Demographics, Age & Diversity through the Model Context Protocol.

Data-first architecture: LlamaIndex agents combine U.S. Census Population — Demographics, Age & Diversity tool responses with indexed documents for comprehensive, grounded answers

Query pipeline framework lets you chain U.S. Census Population — Demographics, Age & Diversity tool calls with transformations, filters, and re-rankers in a typed pipeline

Multi-source reasoning: agents can query U.S. Census Population — Demographics, Age & Diversity, a vector store, and a SQL database in a single turn and synthesize results

Observability integrations show exactly what U.S. Census Population — Demographics, Age & Diversity tools were called, what data was returned, and how it influenced the final answer

U.S. Census Population — Demographics, Age & Diversity + LlamaIndex Use Cases

Practical scenarios where LlamaIndex combined with the U.S. Census Population — Demographics, Age & Diversity MCP Server delivers measurable value.

Hybrid search: combine U.S. Census Population — Demographics, Age & Diversity real-time data with embedded document indexes for answers that are both current and comprehensive

Data enrichment: query U.S. Census Population — Demographics, Age & Diversity to augment indexed data with live information before generating user-facing responses

Knowledge base agents: build agents that maintain and update knowledge bases by periodically querying U.S. Census Population — Demographics, Age & Diversity for fresh data

Analytical workflows: chain U.S. Census Population — Demographics, Age & Diversity queries with LlamaIndex's data connectors to build multi-source analytical reports

U.S. Census Population — Demographics, Age & Diversity MCP Tools for LlamaIndex (5)

These 5 tools become available when you connect U.S. Census Population — Demographics, Age & Diversity to LlamaIndex via MCP:

get_demographics_by_county

Get racial and ethnic demographics for all counties in a state

get_demographics_by_state

Essential for diversity analysis, market segmentation, and policy research. Get racial and ethnic demographics for all states — White, Black, Asian, Hispanic, foreign-born

get_population_by_city

This includes incorporated cities and Census Designated Places. Get population for all cities/towns/places within a state

get_population_by_county

Use state FIPS codes: CA=06, TX=48, NY=36, FL=12, IL=17, PA=42, OH=39, GA=13, NC=37, MI=26, etc. Get population and median age for all counties in a state

get_population_by_state

The ACS is the most comprehensive demographic survey in the U.S., sampling 3.5 million households annually. Get total population and median age for all 50 U.S. states + DC

Example Prompts for U.S. Census Population — Demographics, Age & Diversity in LlamaIndex

Ready-to-use prompts you can give your LlamaIndex agent to start working with U.S. Census Population — Demographics, Age & Diversity immediately.

"What is the population and median age of California vs Texas?"

"Show the Hispanic and Asian population for Florida"

"What is the most populated county in New York State?"

Troubleshooting U.S. Census Population — Demographics, Age & Diversity MCP Server with LlamaIndex

Common issues when connecting U.S. Census Population — Demographics, Age & Diversity to LlamaIndex through the Vinkius, and how to resolve them.

BasicMCPClient not found

Install: pip install llama-index-tools-mcp

U.S. Census Population — Demographics, Age & Diversity + LlamaIndex FAQ

Common questions about integrating U.S. Census Population — Demographics, Age & Diversity MCP Server with LlamaIndex.

How does LlamaIndex connect to MCP servers?

Use the MCP client adapter to create a connection. LlamaIndex discovers all tools and wraps them as query engine tools compatible with any LlamaIndex agent.

Can I combine MCP tools with vector stores?

Yes. LlamaIndex agents can query U.S. Census Population — Demographics, Age & Diversity tools and vector store indexes in the same turn, combining real-time and embedded data for grounded responses.