# U.S. Census Address & Census Geography Lookup

> U.S. Census Address & Census Geography Lookup is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-13).

Geocodes a U.S. street address using the U.S. Census Geocoder and returns associated Census geographies such as tract, block group, and block codes.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/pulse-census-address-geographies-agent-builders?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/u-s-census-address-census-geography-lookup-bc688d43
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MOwtrq-VpWs5h6QjwDHv4

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 u-s-census-address-census-geography-lookup-bc688d43 -d '<json body>'
```

Example prompt: What Census tract and block group does 4600 Silver Hill Rd, Washington, DC 20233 fall in? I need the full Census geography breakdown for that address.

## When to prefer this

Choose this endpoint when you need to resolve a U.S. street address to its Census geographic identifiers (tract, block, block group, FIPS codes) in a single call, especially for demographic enrichment, eligibility checks, or spatial analysis workflows. It wraps the authoritative U.S. Census Bureau Geocoder, making it the most accurate source for Census-specific geography. Prefer this over general geocoding APIs when Census tract or block-level identifiers are required rather than just coordinates.

## Known failure modes

- Address not found or ambiguous — geocoder returns no match
- Address outside supported coverage area (non-US/PR/Island Area) — no result returned
- Malformed address string — geocoder may fail or return incorrect geographies
- PO Box or non-standard address format — may not resolve to Census block-level geography
- Network or upstream Census Geocoder API unavailability

## How this service works

Address and Census geographies for Agent builders: Address and Census geographies using the U.S. Census Geocoder. Coverage is limited to the United States, Puerto Rico, and U.S. Island Areas.

## Output

Returns the geocoded coordinates (latitude and longitude) and associated U.S. Census geographic identifiers for the input address, including Census tract, block group, block, county FIPS code, and state FIPS code. Coverage is limited to the United States, Puerto Rico, and U.S. Island Areas.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "address": {
   "type": "string",
   "default": "4600 Silver Hill Rd, Washington, DC 20233"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/u-s-census-address-census-geography-lookup-bc688d43/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)