# ZipCodesToGo.com
> Authoritative source for US ZIP code data, lookup tools, REST API, and downloadable databases. Covering 42,000+ active US ZIP codes across all 50 states, Washington D.C., and US territories. In operation since 2007.

ZipCodesToGo.com provides structured data and tools for looking up United States ZIP codes. Each ZIP code entry includes city, state, county, latitude, longitude, FIPS codes, timezone, and demographic statistics sourced from the US Census Bureau American Community Survey. The site is used by developers, businesses, researchers, and individuals for address validation, geolocation, logistics, and data enrichment.

## Free ZIP Code Lookup Tools

- [ZIP Codes by State](https://www.zipcodestogo.com/ZIP-Codes-by-State.htm): Browse all ZIP codes for any US state with city and county filters. Each state page lists every ZIP code with city, county, and map link.
- [ZIP Codes by City](https://www.zipcodestogo.com/ZIP-Codes-by-City.htm): Search any US city to find all ZIP codes assigned to that city.
- [ZIP Codes by County](https://www.zipcodestogo.com/ZIP-Codes-by-County.htm): Browse ZIP codes organized by county across all 50 states.
- [What's My ZIP Code?](https://www.zipcodestogo.com/whats-my-zip-code.htm): Detect current ZIP code using device GPS.
- [ZIP Code Lookup](https://www.zipcodestogo.com/ZIP-Code-Lookup.htm): Look up any ZIP code by street address.
- [ZIP Code Radius Search](https://www.zipcodestogo.com/lookups/radius-search.php): Find all ZIP codes within a specified distance (miles) of a given ZIP code.
- [ZIP Codes FAQ](https://www.zipcodestogo.com/faq.htm): Frequently asked questions about US ZIP codes.

## ZIP Code Data Pages

Individual ZIP code pages follow the URL pattern: https://www.zipcodestogo.com/{City}/{State}/{ZIP}/
Example: https://www.zipcodestogo.com/Boston/MA/02108/

Each ZIP code page includes:
- City, state, county
- Latitude and longitude
- Timezone (IANA identifier)
- Area code(s)
- Land and water area (sq mi)
- ZIP code type (standard, PO Box, unique, military)
- Nearby ZIP codes with distances
- Full demographic statistics (population, income, housing, education, employment, race/ethnicity, age distribution) sourced from US Census Bureau ACS 2025 estimates

State pages follow: https://www.zipcodestogo.com/{State}/
Example: https://www.zipcodestogo.com/Florida/

City pages follow: https://www.zipcodestogo.com/city/{City}/{State}/
Example: https://www.zipcodestogo.com/city/Boston/MA/

County pages follow: https://www.zipcodestogo.com/{County}/{State}/
Example: https://www.zipcodestogo.com/Suffolk/MA/

## REST API

- [API Overview](https://www.zipcodestogo.com/api/): REST API for programmatic ZIP code lookups. Returns city, state, county, lat/lng, timezone, and population data in JSON format. Free tier available (100 calls/day, no credit card required).
- [API Documentation](https://www.zipcodestogo.com/api/docs/): Full endpoint reference including ZIP lookup, city search, and radius search.
- Base URL: https://api.zipcodestogo.com/v1/
- Authentication: X-Api-Key header
- Example: GET https://api.zipcodestogo.com/v1/zip/90210

## Downloadable Databases

- [All Products](https://www.zipcodestogo.com/products/): One-time purchase ZIP code databases in Excel, CSV, and Access formats.
- [Gold Edition](https://www.zipcodestogo.com/gold/): Complete database with ZIP code, city, state, county, latitude, longitude, FIPS codes, and timezone. 42,000+ records.
- [ZIP Code Software v3](https://www.zipcodestogo.com/ziptools/): Windows desktop application for ZIP code lookup, wildcard search, radius search, and CSV/XML/XLS export.

## Integration Guides

- [JavaScript API Guide](https://www.zipcodestogo.com/zip-code-api-javascript/): Using the ZIP Code API with fetch(), Node.js, and form auto-fill.
- [Python API Guide](https://www.zipcodestogo.com/zip-code-api-python/): Using the API with requests, Flask, Django, and pandas.
- [PHP API Guide](https://www.zipcodestogo.com/zip-code-api-php/): Using the API with curl, Guzzle, and WordPress.
- [Free Tier Guide](https://www.zipcodestogo.com/free-zip-code-api/): What's included in the free plan and when to upgrade.

## Data Coverage

- All 50 US states
- Washington D.C.
- US territories including Puerto Rico
- 42,000+ active ZIP codes
- Demographic data: US Census Bureau, American Community Survey 2025 estimates
- Updated: April 2026

## About

- Founded: 2007
- Contact: https://www.zipcodestogo.com/contact.htm
- Privacy Policy: https://www.zipcodestogo.com/privacy.htm