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

by ZIP-Codes-APIversion 1.0.1i★ –iRuns in the cloud
Registry namecom.zip-codes/api

Install

Overview

Description from the maker (original English)

Validate & geocode a US address: demographics, districts & schools. Agents can buy credits via MPP.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

  • Connection: Runs in the cloud
  • Transport: Streamable HTTP
  • Category: Other
  • You need to fill in: X-Api-Key

Install

Pick the AI app you use, then copy the settings.

Before you install

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Which app do you use?

Pick your app above. We remember it, so next time the button says “Install in …”.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Run this in your terminal

claude mcp add --transport http api https://mcp.zip-codes.com/mcp --header 'X-Api-Key: your-value'

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

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

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

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

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

  • X-Api-Key secret HTTP header
    Optional API key; without it the server runs in demo mode

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.

  • suggest_places

    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. Fuzzy matching is built in: "beverley hills" finds Beverly Hills, "san fransisco" finds San Francisco, and a partial code

  • zip_lookup

    The full record for a postal code — the main location-intelligence tool. Takes a US ZIP Code, a US ZIP+4, a Canadian FSA, a Canadian postal code, or a latitude,longitude pair, and returns the city, state or province, county, whether it spans more than one county, area codes, elev

  • zip_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. Every figure is generated from a stored query agai

  • quick_zip

    The fast, small answer for a postal code. Takes a US ZIP Code, a US ZIP+4, a Canadian FSA, a Canadian postal code, or a latitude,longitude pair, and returns the code's city, state or province, county, and whether it spans more than one county. Given a ZIP+4 it also returns the st

  • city_name_rules

    How USPS names a ZIP Code, and which of those names may be used on mail. Each ZIP Code has exactly one preferred city name plus alternates, and some alternates are NOT valid for addressing — for 08088 NJ, SHAMONG is valid while SHAMONG TOWNSHIP is not. Returns the rules, the coun

  • buy_credits

    Buy a credit pack with a wallet that pays MPP (Machine Payments Protocol) challenges, such as Stripe Link. The credits go on the account or prepaid card of the API key you send. Without a key, the purchase makes a prepaid card: a new API key holding the credits, in the result's a

  • radius_search

    Find every US ZIP Code and Canadian postal area within a radius of a centre point, with the distance to each. The centre takes a US ZIP Code, a US ZIP+4, a Canadian FSA, a Canadian postal code, or a latitude,longitude pair; a ZIP+4 searches from its parent ZIP, and coordinates ar

  • about_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. Costs nothing and needs no key.

  • distance

    Distance between two places, in miles and kilometres, plus the compass bearing from the first to the second. Each end takes a US ZIP Code, a US ZIP+4, a Canadian FSA, a Canadian postal code, or a latitude,longitude pair, and the two ends can be different kinds — a US ZIP to a Can

  • validate_address

    Validate and standardise a US street address and return its ZIP+4. US ONLY — unlike the postal-code tools, this does not cover Canada. Send the address on one line in mailing order: number and street, then any unit (APT 4, STE 900, #9), then city, state and ZIP. It tolerates ordi

  • 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. Filter by state to get every county in that state: without a filter only the

  • metro_area_reference

    US metropolitan and micropolitan statistical areas (CBSAs) — all 935. Of those only 393 are metropolitan; the rest are micropolitan and are NOT metro areas, so do not treat a CBSA count as a metro count. Each carries its divisions, parent combined area, land area and delivery foo

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified against the domain zip-codes.com (the registry checks domain ownership)

  • … Not checked yet

    Still maintained

    We have not read this repo from GitHub yet

  • … Not checked yet

    Has a licence

    We have not read this repo from GitHub yet

  • ✓ Pass

    Endpoint responds

    Responded in 158 ms (HTTP 200)

  • – Not applicable

    Sign-in with OAuth

    No sign-in needed

  • ✓ Pass

    No hidden instructions in tool descriptions

    Read 12 tool descriptions and found no hidden instructions to the AI

Compared with others in Otheri

  • More stars than 0% of the other 32568 servers in this category
  • Published to the registry more recently than 89% of the other 32568 servers in this category
  • Basic checks equal to or better than 100% of the other 32568 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Zip-Codes.com Location Intelligence: Spatial Analysis, Districts & 14+ Years of… safe?

It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: X-Api-Key

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.1) reached the registry 4 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, FlyDocs

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

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 2010–2026. 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.

MPP-capable: an optional buy_credits tool lets an agent with an MPP wallet (such as Stripe Link) buy a prepaid API key or add credits to one; the wallet's owner approves each payment.

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 (12)

ToolTitleWhat it does
about_dataAbout this dataWhere 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.
buy_creditsBuy creditsBuy a credit pack with a wallet that pays MPP (Machine Payments Protocol) challenges, such as Stripe Link.
city_name_rulesCity name rulesHow USPS names a ZIP Code, and which of those names may be used on mail.
county_referenceCounty referenceUS 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.
distanceDistance between two placesDistance between two places, in miles and kilometres, plus the compass bearing from the first to the second.
metro_area_referenceMetro area referenceUS metropolitan and micropolitan statistical areas (CBSAs) — all 935.
quick_zipQuick ZIP / ZIP+4 / reverse geocodeThe fast, small answer for a postal code.
radius_searchRadius searchFind every US ZIP Code and Canadian postal area within a radius of a centre point, with the distance to each.
suggest_placesPlace 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_addressValidate a US addressValidate and standardise a US street address and return its ZIP+4.
zip_factsZIP Code factsStatistics 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_lookupZIP Code lookupThe 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 jharris@zip-codes.com. 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

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