• DATA
  • MAPPING
  • VALIDATION
  • HUMAN

How to find all postal codes in a city with your AI

Connect Zippopotam.us to your AI client to turn a city name into a clean list of postal codes.

Ask AI about this page

Short answer

How can I get every postal code for a specific city?

Tell your AI the name of the city or province you want. It will use Zippopotam.us to fetch every valid postal code in that area. You'll get a structured list you can use for mapping or data validation.

Where the data lands.

The results you get.

Once your AI runs the search, you can use the output in several ways.

DATA

Clean code lists

The AI extracts every valid postal code from the city search. You get a raw list ready for spreadsheets or databases.

MAPPING

Geographic grouping

The AI organizes the codes by their specific locations. This helps you see which neighborhoods fall under which codes.

VALIDATION

Address checking

Use the returned codes to verify if a specific address or zip belongs to the city you specified.

HUMAN

Manual review

You decide which codes are relevant to your project. The AI provides the data, but you handle the final selection.

The workflow

What your AI does when the city name arrives.

The AI handles the lookup and formatting so you don't have to hunt through directories.

  1. Identify the location

    Your AI parses your request to find the specific city or province name you want to look up.

    get_postal_codes_by_city

  2. Fetch the codes

    The agent calls the Zippopotam.us tool to pull the full set of postal codes for that area.

    get_postal_codes_by_city

  3. Format the output

    The AI takes the raw data and turns it into a readable list or a structured table.

    get_postal_codes_by_city

  4. Deliver the results

    The agent presents the final list of codes directly in your chat interface.

    get_postal_codes_by_city

Try it

Copy these to start.

Use these prompts to trigger the lookup immediately.

Starting points

Swap out the city or province names with the ones you actually need.

Zippopotam.us Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_NLPd3qHtXaIgqvL9hmOUq9oZ5rRm4nvhR6G9FRBA/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — Zippopotam.us capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "zippopotamus-alternative-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_NLPd3qHtXaIgqvL9hmOUq9oZ5rRm4nvhR6G9FRBA/mcp"
    }
  }
}
Copy into chat04

  • Find all the postal codes for London, UK.

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  • Give me a list of all zip codes in New York City.

  • What are the postal codes for the city of Tokyo?

  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Start here

Connect Zippopotam.us once, then ask.

Just click the link to connect the MCP. Your credentials stay encrypted, and you can start asking for postal codes right away.

Connect Zippopotam.us to your AI

FAQ

How this task behaves.

  • 01

    Can the AI find postal codes for any country?

    The AI can only find codes for locations supported by the Zippopotam.us tool.

  • 02

    Will the AI update my local database with these codes?

    No. The AI only retrieves the data and presents it to you. You must manually move the data into your database or files.

  • 03

    Can the AI fix typos in my city names?

    The AI will try to interpret your intent, but if the city name is too garbled, the tool lookup will fail.

  • 04

    Does the AI provide street addresses too?

    No. This tool is specifically for finding postal codes by city or province.

  • 05

    Can the AI delete postal code data from the source?

    No. The AI only has permission to read data from Zippopotam.us. It cannot modify or delete any external records.

  • More questions about Zippopotam.us? The Connector page answers them. See everything the Zippopotam.us Connector can do

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