Tools
ZIP code tools
Small, fast utilities built on the same sourced database as the directory — and on the same free API you can use yourself.
- ZIP code lookup by addressType a street address, get its ZIP — from the Census address database, never stored.
- Distance between ZIP codesMiles and kilometres between any two ZIP or postal codes, shareable by link.
- ZIP codes within a radiusEvery code around a centre point with distances — download as CSV.
- Compare ZIP codesTwo or three ZIPs side by side: population, income, home values, climate and more.
- Area code lookupWhere an area code serves — states, cities, overlay codes — or a ZIP's codes.
- Planting zone lookupYour 2023 USDA hardiness zone by ZIP, with the temperature band behind it.
- Where am I?Your ZIP, county, time zone and local time from your location — nothing stored.
More on the way: shipping-zone estimates. Something you need? Tell us.