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Census Zipcode

US Census ACS 5-year demographics for a ZIP code (ZCTA).

$0.00115USDC per call · settled on Base · no subscription, no API key

Overview

US Census ACS 5-year demographics for a ZIP code (ZCTA). Returns population, median age, median household income, poverty rate, household composition, race + ethnicity breakdown, education attainment, workforce (with computed unemployment rate), and housing (with computed owner-occupancy rate and median rent/home value). Backed by ~33k ZCTAs pre-ingested from api.census.gov; refreshed annually. Public-domain US government data.

Endpoint

MethodEndpointPriceDescription
GET/v1/marketplace/api/census-zipcode$0.00115Invoke Census Zipcode (Code) and return the upstream response.

How to call it

Requests are paid per call over the x402 protocol. Call the endpoint, receive a 402 Payment Required quote, then repeat the request with the signed payment header. The SDKs do both steps for you.

# 1. Ask for a quote
curl -i https://api.jarvisclaw.ai/v1/marketplace/api/census-zipcode

# 2. Pay it (the SDK signs and retries for you)
curl -H "X-PAYMENT: <signed-payload>" https://api.jarvisclaw.ai/v1/marketplace/api/census-zipcode
Open in the marketplace

Docs: Getting started · x402 payments · x402 discovery · All APIs