US ZipCode

API

Validate US ZipCodes and retrieve associated geographic data

Overview

The US ZipCode API offers RESTful endpoints to validate US ZipCodes and fetch detailed associated data, including city, state, county, latitude, longitude, and time zone. Responses are in JSON format, making integration easy. Use cases include enhancing e-commerce checkout flows (reducing address errors), auto-completing address forms, optimizing logistics routes, and enriching customer databases with accurate geographic metadata. It supports both single and bulk zipcode queries for efficient processing.

Example Integration (JavaScript)

script.js JS


fetch('https://www.smarty.com/docs/cloud/us-zipcode-api')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful API
JSON Response Format
ZipCode Validation
Geographic Data Retrieval
Time Zone Information
Bulk Query Support

Frequently Asked Questions

? Is the US ZipCode API free to use?

It offers a freemium model with a free tier for limited requests; paid plans are available for higher volume usage.

? Does it require an API Key?

Yes, an API key is required to access endpoints, obtainable by signing up on the Smarty platform.

? What is the response format?

Responses are in JSON format, including zipcode validity, city, state, county, coordinates, and time zone data.

Top Alternatives

USPS ZipCode Lookup API Search Google

Google Geocoding API Search Google

OpenCage Geocoding API Search Google

Tool Info

Pricing Freemium

Category Geocoding

Platform Public API

Pros

⊕ Accurate and Up-to-Date Data
⊕ Simple Integration
⊕ Comprehensive Metadata
⊕ Fast Response Times

Cons

⊖ Rate-Limited Free Tier
⊖ Requires API Key
⊖ Paid Plans for High Volume