Lake Oswego, OR ZIP Codes
Lake Oswego, Oregon has 2 ZIP codes: 2 for street addresses ( and ).
Your street decides which one you use.
Which Lake Oswego 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?
Lake Oswego ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: Lake Oswego city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Lake Oswego ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 97034 | street delivery Lake Oswego |
| 97035 | street delivery Lake Grove |
Why your mail may say Lake Oswego when you live outside it
Lake Oswego ZIP codes also cover Rivergrove, so a letter addressed to Lake Oswego can go to a home outside the city limits.
A ZIP code does not set your city, school district or tax. Clackamas County property records show which city you are in.
Lake Oswego ZIP code questions
What is the main ZIP code for Lake Oswego?
97034, the ZIP code of the main Lake Oswego post office at 501 4th St.
What county is Lake Oswego in?
Clackamas County, with parts in Multnomah County.
ZIP codes for towns near Lake Oswego
More towns near Lake Oswego: Gresham, Vancouver, McMinnville, Keizer, Salem, Longview, Albany, Corvallis, Springfield.
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