ZIP codes in Kusilvak Census Area

12 ZIPs touch Kusilvak Census Area, Alaska. The blue dashed line is the county border; orange ZIPs reach into it.

ZIP codes

cross the county line

8,112

people in these ZIPs

counties in AK

Most people

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Kusilvak Census Area ZIP list

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Questions people actually ask

How many ZIP codes are in Kusilvak Census Area, Alaska?

12 ZIP codes reach into Kusilvak Census Area. Every ZIP area here lies wholly inside the county.

Which ZIP code in Kusilvak Census Area has the most people?

99658 (Saint Marys) has about 979 residents, the most of any ZIP touching Kusilvak Census Area, in the Census Bureau’s ACS 2020–2024 estimates.

Can a ZIP code be in Kusilvak Census Area 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 Kusilvak Census Area. 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