ZIP codes in Shannon County
10 ZIPs touch Shannon County, Missouri. The blue dashed line is the county border; orange ZIPs reach into it.
10
ZIP codes
8
cross the county line
31,765
people in these ZIPs
115
counties in MO
Most people
Shannon County ZIP list
More counties in Missouri
- Reynolds County12
- Ripley County10
- Saline County13
- Schuyler County6
- Scotland County9
- Scott County14
- Shelby County9
- St. Charles County18
- St. Clair County16
- St. Francois County16
- St. Louis County56
- St. Louis city49
Questions people actually ask
How many ZIP codes are in Shannon County, Missouri?
10 ZIP codes reach into Shannon County, including 1 PO Box or single-address ZIPs placed by the town they serve. 8 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Shannon County has the most people?
65560 (Salem) has about 13,822 residents, the most of any ZIP touching Shannon County, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in Shannon 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 Shannon 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