ZIP codes in Washington County
28 ZIPs touch Washington County, Arkansas. The blue dashed line is the county border; orange ZIPs reach into it.
28
ZIP codes
11
cross the county line
307,897
people in these ZIPs
75
counties in AR
Most people
Washington County ZIP list
More counties in Arkansas
- Sevier County7
- Sharp County14
- St. Francis County14
- Stone County17
- Union County12
- Van Buren County14
- White County21
- Woodruff County10
- Yell County14
Questions people actually ask
How many ZIP codes are in Washington County, Arkansas?
28 ZIP codes reach into Washington County, including 8 PO Box or single-address ZIPs placed by the town they serve. 11 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Washington County has the most people?
72764 (Springdale) has about 58,719 residents, the most of any ZIP touching Washington County, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in Washington County and another county?
Yes. ZIP codes follow mail routes, not county lines. Rows marked with a percentage show how much of that ZIP’s land is in Washington County. For one address, pin the exact spot on the ZIP finder to see its county.
Where does this list come from?
ZIP areas and their county overlaps come from the Census Bureau’s 2020 ZIP Code Tabulation Area to county relationship file. PO Box ZIPs have no area, so each is placed in the county of the ZIP area nearest the town it serves.
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Updated 2026-11-10 · Where the data comes from