Professional
ZIP Code & Mailing Data
Look up any US ZIP code to get city, state, county, coordinates, timezone, type (standard, PO box, unique, military), and population. Search by ZIP, city, state, or county. Sourced from GeoNames and US Census data.
GET /api/v1/pro/mailing/zip Requires API key Parameters
| zip | 5-digit ZIP code |
| city | City name (partial match) |
| state | Two-letter state code |
| county | County name (partial match) |
curl -H "Authorization: Bearer pro_YOUR_KEY" \
"https://api.verilexdata.com/api/v1/pro/mailing/zip?zip=90210"Response
{
"dataset": "mailing",
"type": "zip_codes",
"count": 1,
"data": [
{
"zip": "90210",
"city": "Beverly Hills",
"state": "CA",
"county": "Los Angeles",
"country": "US",
"latitude": 34.0901,
"longitude": -118.4065,
"timezone": "America/Los_Angeles",
"zip_type": "STANDARD",
"population": 21741
}
]
}Use cases
Address validation and normalization
Mailing list hygiene — verify ZIP to city/state
Distance calculation using lat/long coordinates
Timezone detection for scheduling