ZIP Code & USPS Tools
Every tool you need for ZIP codes, addresses, postage and tracking — free tools right here on this site, plus quick links to the official USPS services.
ZIP Code & Address Tools
Look up ZIP codes, verify and standardize addresses — free tools on this site.
ZIP Code Lookup
Find the ZIP code for any U.S. street address.
On this siteZIP Code by Address
Enter a street address, city and state to get its ZIP code.
On this siteZIP Codes by City & State
Browse every ZIP code used in a city.
On this siteCity & State by ZIP Code
Find the city and state behind any ZIP code.
On this siteZIP+4 Code Lookup
Get the full 9-digit ZIP+4 code for an address.
On this siteAddress Verification
Run an instant format check on any U.S. address.
On this siteAddress Standardization
Convert addresses to USPS Publication 28 style.
On this sitePackage Tracking
Track parcels and manage deliveries.
USPS Tracking
Enter a tracking number — we open USPS with it filled in.
On this siteInformed Delivery
Preview incoming mail and manage your packages.
Official USPS ↗Missing Mail Search
File a search request for lost or missing mailpieces.
Official USPS ↗Package Intercept
Stop or redirect a package before it is delivered.
Official USPS ↗Redelivery Scheduler
Schedule another delivery attempt for your package.
Official USPS ↗Proof of Delivery
Get delivery confirmation records and signatures.
Official USPS ↗Shipping & Postage
Compare services, calculate prices and ship.
Calculate a Price
Estimate postage from current USPS retail rates.
On this siteClick-N-Ship
Pay for postage and print shipping labels from home.
Official USPS ↗Schedule a Pickup
Have your carrier pick up packages from your address.
Official USPS ↗Modify or Cancel Pickup
Change or cancel a scheduled package pickup.
Official USPS ↗Recurring Pickup
Set up automatic daily package pickups for business.
Official USPS ↗Service Standards
Official USPS delivery-time standards and resources.
Official USPS ↗International Shipping Prices
Rates and options for shipping packages abroad.
Official USPS ↗Post Office & Locations
Find USPS locations and services near you.
USPS Location Finder
Find post offices, hours and services near you.
Official USPS ↗Post Office Hours Finder
Check retail hours and holiday schedules.
Official USPS ↗Collection Box Locator
Find blue USPS collection boxes nearby.
Official USPS ↗Self-Service Kiosk Finder
Find 24/7 self-service postage kiosks.
Official USPS ↗PO Box Availability
Check PO Box sizes and availability by location.
Official USPS ↗Rent or Renew PO Box
Rent a new PO Box or renew your box online.
Official USPS ↗Passport Service Locator
Find passport acceptance offices and services.
Official USPS ↗USPS Smart Locker Locator
Find secure package locker pickup locations.
Official USPS ↗Pickup Service Finder
Arrange package pickup services at your address.
Official USPS ↗Approved Postal Provider Finder
Find contract postal units and approved partners.
Official USPS ↗Mail Management
Control what happens to your mail.
Hold Mail
Pause mail delivery while you are away.
Official USPS ↗Change of Address
Forward your mail to a new address.
Official USPS ↗Informed Delivery Dashboard
See your daily mail preview dashboard.
Official USPS ↗Redelivery Request
Request another delivery attempt.
Official USPS ↗Buy Stamps
Order postage stamps from the USPS store.
Official USPS ↗Business & Developer APIs
Build with official USPS web tools and APIs via the USPS Developer Portal.
Addresses API
Verify and standardize addresses to USPS specifications.
Official USPS ↗Domestic Prices API
Get up-to-date pricing for all domestic USPS products.
Official USPS ↗International Prices API
Get up-to-date pricing for international USPS products.
Official USPS ↗Tracking API
Retrieve tracking status for shipped packages.
Official USPS ↗Labels API
Create and manage shipping labels programmatically.
Official USPS ↗Pickup API
Schedule package pickups from your own systems.
Official USPS ↗Hold For Pickup API
Route packages to Post Office hold-for-pickup.
Official USPS ↗Service Standards API
Look up delivery time commitments by origin and destination.
Official USPS ↗Post Office Locator API
Find USPS locations by address, city or ZIP code.
Official USPS ↗How to use
- Browse the six categories above and choose the tool you need.
- Tools with a blue On this site badge open instantly and are free to use — no account needed.
- Tools with a gray Official USPS ↗ badge open the official USPS page in a new tab — most require a free USPS account.
Frequently Asked Questions
Are the tools on this site free to use?
Yes. Every tool marked “On this site” is completely free — enter your details and get an instant result right in your browser. Nothing is sent to a server.
Why do some tools open usps.com instead?
Some services — live tracking data, buying postage, holding mail, changing your address — can only be completed inside USPS systems. For those we link you straight to the correct official USPS page so you land in the right place.
Do I need a USPS account?
Only for the official USPS tools. Most services on usps.com — tracking, Informed Delivery, Hold Mail, Click-N-Ship — require a free USPS.com account. The tools on this site never ask you to sign in.
Is my information shared with USPS?
No. The tools on this site run entirely in your browser; addresses and tracking numbers you enter are never sent to us. When you click an “Official USPS” link, you leave this site and USPS privacy rules apply there.