Zip-Codes.com Location Intelligence: Spatial Analysis, Districts & 14+ Years of Demographics

Zip-Codes.com Location Intelligence: Spatial Analysis, Districts & 14+ Years of Demographics

Location intelligence for US addresses and ZIP Codes, through the Model Context Protocol. Zip-Codes.com can validate a US street address and return its ZIP+4, census tract demographics, income, housing and school district in one call. It answers from current USPS data, updated monthly, and Census boundaries, so an agent looks addresses and ZIP Codes up instead of guessing them. Request the enrichments you need. The survey estimates describe the census tract and carry margins of error.

ZIP boundaries follow USPS carrier routes and are refreshed quarterly. Coverage includes PO Box and single-organization ZIP Codes that Census ZIP-area files leave out. Boundary enrichments show which counties and districts a ZIP overlaps, with shares measured by area. The USPS county assignment is available alongside the mapped counties.

For history, request Census TIGER/Line boundaries from 2010–2025. American Community Survey profiles use consistent field names across 2011–2024 releases for ZIP Code areas and 2022–2024 for tracts. A ZIP's survey estimates come from the Census ZCTA with the same code.

Connect

Server URL: https://mcp.zip-codes.com/mcp (Streamable HTTP).

Claude Code

claude mcp add --transport http zip-codes https://mcp.zip-codes.com/mcp
claude mcp add --transport http zip-codes https://mcp.zip-codes.com/mcp --header "X-Api-Key: YOUR_KEY"

Cursor (~/.cursor/mcp.json) and other mcpServers clients

{
  "mcpServers": {
    "zip-codes": {
      "url": "https://mcp.zip-codes.com/mcp",
      "headers": {
        "X-Api-Key": "YOUR_KEY"
      }
    }
  }
}

VS Code (.vscode/mcp.json)

{
  "servers": {
    "zip-codes": {
      "type": "http",
      "url": "https://mcp.zip-codes.com/mcp",
      "headers": {
        "X-Api-Key": "YOUR_KEY"
      }
    }
  }
}

Clients that only take a bearer token can send Authorization: Bearer YOUR_KEY instead.

Claude / Claude Desktop custom connector

Add https://mcp.zip-codes.com/mcp as a custom connector. It runs in demo mode unless the connector form has a Request headers section (a beta for a limited set of organizations): there, add x-api-key with your key.

Tools (11)

Tool	Title	What it does
about_data	About this data	Where this server's data comes from: for each dataset the authority behind it, the edition served where the source publishes editions (TIGER/Line, ACS, ZCTA), how often a new release is taken, and a ready-made citation string.
city_name_rules	City name rules	How USPS names a ZIP Code, and which of those names may be used on mail.
county_reference	County reference	US counties and county equivalents — all 3,235 of them — with their Census and USPS names, which disagree for over a hundred, plus ANSI code, legal type, land and water area, and USPS delivery footprint.
distance	Distance between two places	Distance between two places, in miles and kilometres, plus the compass bearing from the first to the second.
metro_area_reference	Metro area reference	US metropolitan and micropolitan statistical areas (CBSAs) — all 935.
quick_zip	Quick ZIP / ZIP+4 / reverse geocode	The fast, small answer for a postal code.
radius_search	Radius search	Find every US ZIP Code and Canadian postal area within a radius of a centre point, with the distance to each.
suggest_places	Place search (type-ahead)	Search for a place by partial name, misspelled name, or partial code — the resolver that turns what a person typed into something the other tools can look up.
validate_address	Validate a US address	Validate and standardise a US street address and return its ZIP+4.
zip_facts	ZIP Code facts	Statistics about US ZIP Codes and Canadian postal codes: how many exist, how they break down by type, delivery point and carrier route totals, per-state tables, and ranked lists such as the ZIP Codes with the most carrier routes.
zip_lookup	ZIP Code lookup	The full record for a postal code — the main location-intelligence tool.

Pricing

No key needed to start. A free key gives 2,500 credits a day; plans and credit packs: https://www.zip-codes.com/api/pricing

Support

Email [email protected]. Issues are turned off on this repository; email reaches the people who run the server.

Privacy policy: https://www.zip-codes.com/privacy-policy.asp

Links

• Overview: https://www.zip-codes.com/api/mcp
• API docs: https://api.zip-codes.com/docs
• Server overview for agents: https://mcp.zip-codes.com/llms.txt

License

Proprietary. All rights reserved; see LICENSE. Use of the server, API and data is governed by the Terms of Service: https://www.zip-codes.com/api/tos