# Suverse Census Geocoder – Coordinates to US Census Geographies

> Suverse Census Geocoder – Coordinates to US Census Geographies is a paid API for AI agents from proxy.suverse.io, paid per call via x402, $0.075/call, status unknown (last checked 2026-09-16).

Reverse-geocodes a US latitude/longitude coordinate to its official Census geographies (state, county, and tract FIPS codes and names) using the US Census Bureau geocoder.

## Facts

- Endpoint: POST https://proxy.suverse.io/v1/data/suverse-demographics-census-coords
- Price: $0.075/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/suverse-census-geocoder-coordinates-to-us-census-geographies-68849ae6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5TZPFU4Or-pIkct_qNDa_

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability suverse-census-geocoder-coordinates-to-us-census-geographies-68849ae6 -d '<json body>'
```

Example prompt: What census state, county, and tract FIPS codes does the US Census Bureau assign to the coordinate longitude -87.6298, latitude 41.8781?

## When to prefer this

Choose this endpoint when you need authoritative, official US Census Bureau geographic identifiers (FIPS codes) for a specific latitude/longitude point, especially for compliance, demographic research, or data enrichment use cases requiring Census-standard geography. No API key is required, making it suitable for quick integration. Prefer this over commercial geocoding services when Census-standard tract or county FIPS codes (not just addresses) are the desired output.

## Known failure modes

- Coordinates outside the US (including territories not covered) return no results or an error
- Invalid or out-of-range lat/lon values cause a 400-level error
- Points in remote or unincorporated areas may lack tract-level data
- Service unavailability from the upstream Census Bureau geocoder causes timeouts or 5xx errors

## How this service works

Reverse-map a US latitude/longitude to its official Census geographies (state, county, tract FIPS codes and names). Pass x (lon) and y (lat). Authoritative US Census Bureau geocoder, no key required.

## Output

Returns the official US Census Bureau geography identifiers for the given coordinate, including state FIPS code and name, county FIPS code and name, and census tract FIPS code and name, as authoritative data directly from the Census geocoder.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "properties": {}
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/suverse-census-geocoder-coordinates-to-us-census-geographies-68849ae6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from proxy.suverse.io](https://www.zero.xyz/host/proxy.suverse.io/llms.txt)