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Oklahoma ZIP codes

All 765 ZIPs in Oklahoma, 73001 to 74966. Tap one on the map or in the list.

765

ZIP codes

4,028,588

people live in them

77

counties

101

PO Box & no-area ZIPs

Most people

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All 765 Oklahoma ZIP codes

ZIP codes by county

Pick a county for its ZIP list and map. Counts include ZIPs that only partly reach into the county.

Questions people actually ask

How many ZIP codes are in Oklahoma?

765 ZIP codes are in use in Oklahoma. 664 cover a delivery area, and 101 are PO Box, single-building or organization ZIPs with no area of their own.

What do Oklahoma ZIP codes start with?

Oklahoma ZIP codes start with these three-digit prefixes: 730–731, 734–741, 743–749. Each prefix is a mail sorting area run from one processing center.

Which Oklahoma ZIP code has the most people?

73099 in Yukon has the most residents of any Oklahoma ZIP, about 91,014 people in the Census Bureau’s ACS 2020–2024 estimates.

Which Oklahoma county has the most ZIP codes?

Oklahoma County touches 89 ZIP codes, the most of the 77 counties in Oklahoma. 275 Oklahoma ZIPs reach into more than one county.

Are these the official USPS ZIP code boundaries?

The map uses Census ZIP Code Tabulation Areas, the standard public stand-in for USPS delivery areas. They match for almost every home. For a mailing address, the USPS ZIP Code lookup has the final word.

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Updated 2026-11-10 · Where the data comes from