There are 14 zip codes in Washington County, Arkansas. The most populated is 72764, located in Springdale. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
7276458,066Springdale
7270147,780Fayetteville
7276244,822Springdale
7270335,324Fayetteville
7270428,832Fayetteville
7273010,842Farmington
7275310,363Prairie Grove
727747,138West Fork
727444,936Lincoln
729592,962Winslow
727171,183Canehill
727691,172Summers
72749401Morrow
7272999Evansville

Zip Codes in Washington County, Arkansas by Population (2024)