Leander, TX ZIP Codes
Leander, Texas has 3 ZIP codes: 2 for street addresses ( and ) and 1 for PO boxes ().
Your street decides which one you use.
Which Leander ZIP code is my address in?
Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?
Leander ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
78646 has no area on the map: it is a PO box or single-organization ZIP code. Dashed line: Leander city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Leander ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 78641 | street delivery Leander |
| 78645 | street delivery North Lake Travis |
| 78646 | PO boxes at the Leander post office Leander |
ZIP codes from nearby towns that reach into Leander
- 78628, mailing town Georgetown, covers 3 percent of Leander
Why your mail may say Leander when you live outside it
Leander ZIP codes also cover Lago Vista, Jonestown and Volente, so a letter addressed to Leander can go to a home outside the city limits.
The reverse happens too: parts of Leander use 78628, which mails under a neighboring town's name.
A ZIP code does not set your city, school district or tax. Williamson County property records show which city you are in.
Leander ZIP code questions
What is the main ZIP code for Leander?
78641, the ZIP code of the main Leander post office at 801 S Highway 183.
Which Leander ZIP codes are for PO boxes only?
78646. Mail to it goes to boxes at the post office, not to street addresses.
What county is Leander in?
Williamson County, with parts in Travis County.
ZIP codes for towns near Leander
More towns near Leander: Killeen, Harker Heights, Copperas Cove, Kyle, Temple, San Marcos, Canyon Lake, New Braunfels, Seguin.
Sources and last checked
USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.
Checked October 20, 2026. Sources · How we build our lists · Corrections