Developer API
Build with ZIP Code Data
Access comprehensive US demographics, housing prices, and location data through our simple REST API. Start free with 100 requests/day.
Example Request
curl -X GET "https://zipcodefacts.com/api/v1/zip/90210" -H "Authorization: Bearer zcf_your_api_key"
// Response
{
"zipCode": "90210",
"city": "Beverly Hills",
"state": "CA",
"county": "Los Angeles",
"demographics": {
"population": 21741,
"medianHouseholdIncome": 153042,
"medianHomeValue": 2500000
},
"housing": {
"zillowHomeValueIndex": 3250000,
"appreciation1Year": 4.2
}
}Why Use Our API?
41,000+ ZIP Codes
Complete coverage of US ZIP codes with demographics, housing data, and location info.
Fast & Reliable
Low-latency responses with 99.9% uptime SLA for Pro and Enterprise tiers.
Secure
API key authentication with rate limiting to protect your applications.
RESTful Design
Simple REST API with JSON responses. Easy to integrate with any language.