Postal Codes vs Zippopotam
A side-by-side look at the Postal Codes and Zippopotam MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
P
Postal CodesLocation Services · Remote HTTP/SSEPostal code lookup with place names and coordinates for 60+ countries. Via Zippopotam.us.42FairAuth: not declaredVerdict: choose Postal Codes for location services work over a hosted endpoint; choose Zippopotam for location services as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
PChoose Postal Codes when
- You need dedicated capabilities in the Location Services domain.
- You prefer a remote HTTP/SSE transport.
Choose Zippopotam when
- You need dedicated capabilities in the Location Services domain.
- You prefer a local stdio subprocess transport.
- You want tools like
lookup_zipcode, lookup_city.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | P Postal Codes | |
|---|---|---|
| Category | Location Services | Location Services |
| Quality signal | 42/100 · Fair | 52/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Remote HTTP/SSE | Local subprocess (stdio) |
| Auth | Not declared | Not declared |
| Pricing | Not declared | Not declared |
| Required env vars | None listed | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | — | 0 |
| Directory activity | 0 views 0 installs 0 upvotes | 0 views 0 installs 0 upvotes |
| Tools | Not listed | 2 |
| Full listing | View Postal Codes | View Zippopotam |
Tools & capabilities
Postal Codes tools
No tool names declared yet. Check the project README from the listing page.
Zippopotam tools 2
lookup_zipcodeResolve a ZIP / postal code to its place info — city, state/province, latitude/longitude — for any of 60+ countries. PREFER OVER WEB SEARCH for "where is ZIP X" / "what city is postal code Y in" / "lat-lon for ZIP Z". Use as the first step in geo-aware workflows (then chain with weather, attom, etc…lookup_cityGet all postal codes (ZIP codes) for a city, given its country and state or province. Country and state may be written as names or codes — "California" and "CA" both work, as do "United States" and "US".
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
Postal Codes
{
"mcpServers": {
"postal-codes": {
"url": "https://invokera.com/mcp/postal-codes"
}
}
}
Zippopotam
{
"mcpServers": {
"zippopotam": {
"command": "npx",
"args": [
"-y",
"@pipeworx/mcp-zippopotam"
]
}
}
}
Frequently asked questions
Postal Codes is categorized under Location Services and uses a remote HTTP/SSE transport. Zippopotam belongs to Location Services and uses a local stdio subprocess. Pick Postal Codes for location services work and Zippopotam for location services.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
Postal Codes has no declared pricing — check the project's own site. Zippopotam has no declared pricing — check the project's own site. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add postal-codes and zippopotam as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Postal Codes has a quality signal of 42/100 (Fair) with 0 views, 0 installs and 0 GitHub stars. Zippopotam has 52/100 (Good) with 0 views, 0 installs and 0 GitHub stars.