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ZIP codes in Ouachita Parish

23 ZIPs touch Ouachita Parish, Louisiana. The blue dashed line is the county border; orange ZIPs reach into it.

23

ZIP codes

7

cross the county line

195,186

people in these ZIPs

64

counties in LA

Most people

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Ouachita Parish ZIP list

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Questions people actually ask

How many ZIP codes are in Ouachita Parish, Louisiana?

23 ZIP codes reach into Ouachita Parish, including 8 PO Box or single-address ZIPs placed by the town they serve. 7 of them are only partly in the county and also cover a neighboring county.

Which ZIP code in Ouachita Parish has the most people?

71203 (Monroe) has about 38,354 residents, the most of any ZIP touching Ouachita Parish, in the Census Bureau’s ACS 2020–2024 estimates.

Can a ZIP code be in Ouachita Parish 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 Ouachita Parish. 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