ZIP codes in Mississippi County
21 ZIPs touch Mississippi County, Arkansas. The blue dashed line is the county border; orange ZIPs reach into it.
21
ZIP codes
4
cross the county line
42,767
people in these ZIPs
75
counties in AR
Most people
Mississippi County ZIP list
More counties in Arkansas
- Little River County7
- Logan County13
- Lonoke County12
- Madison County13
- Marion County14
- Miller County6
- Monroe County9
- Montgomery County10
- Nevada County12
- Newton County20
- Ouachita County9
- Perry County8
Questions people actually ask
How many ZIP codes are in Mississippi County, Arkansas?
21 ZIP codes reach into Mississippi County, including 4 PO Box or single-address ZIPs placed by the town they serve. 4 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Mississippi County has the most people?
72315 (Blytheville) has about 19,890 residents, the most of any ZIP touching Mississippi County, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in Mississippi 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 Mississippi 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