Johnston County ZIP Codes
Oklahoma, United States · 9 codes
Johnston County in Oklahoma has 9 ZIP codes, from 73432 to 74856, serving 9 places.
ZIP codes in Johnston
Frequently asked questions
What is the ZIP code of Johnston?
Johnston has 9 ZIP codes, from 73432 to 74856. The table lists the places each one serves.
How many places are listed in Johnston County?
9 places.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.