Editorial Policy
ZipYell aims to be the clearest and most reliable free reference for postal codes and places. This policy explains how our pages are made and kept accurate.
Our sources
- Postal codes, place names, coordinates and administrative areas: GeoNames, licensed under CC BY 4.0. GeoNames combines official and community sources and is used by thousands of organisations.
- Populations and alternative place names: GeoNames city data.
- Photos: Wikimedia Commons, under the licence shown with each photo.
- Videos: YouTube, embedded with credit to the creator.
- Maps: Google Maps embeds.
We credit our sources on the pages where their content appears.
How pages are built
Our software imports each country's data, checks it for duplicates and obvious errors, groups codes by region, district and place, and builds a page for every code and place. Descriptive text on these pages is generated from the data itself — for example the number of codes in a city or the nearest codes — and does not add facts that are not in our sources. Where data is ambiguous (for example a place name used in several regions) we add the region or district to tell them apart.
Independence
Our data and page content are never changed in exchange for payment. Advertisers and partners have no influence over postal data, rankings or ratings. Sponsored content, where it exists, is clearly labelled. See our Advertising Policy.
User feedback
Ratings, likes and comments come from registered members and represent their own opinions. They are clearly separated from our reference data and are moderated under our Review Policy and Community Guidelines.
Updates and corrections
We refresh country data periodically from our sources. If you find an error, tell us — include the page and, if possible, an official source. We check each report; confirmed errors are corrected on the site and, where relevant, reported back to the data source so everyone benefits. We aim to act on correction reports within 14 days.
Limits
Postal codes and boundaries change, and coordinates mark a representative point rather than an exact boundary. Please read our Content Responsibility Disclaimer.