<Li> Fort Campbell (ZIP Code 42223), is primarily in Tennessee, but the main entrance is in Kentucky . </Li> <Table> <Tr> <Td> </Td> <Td> This section does not cite any sources . Please help improve this section by adding citations to reliable sources . Unsourced material may be challenged and removed . (June 2013) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This section does not cite any sources . Please help improve this section by adding citations to reliable sources . Unsourced material may be challenged and removed . (June 2013) (Learn how and when to remove this template message) </Td> </Tr> <P> A ZIP Code's address and the city name written on the same line do not necessarily mean that address is within the boundaries of that city . The Postal Service designates one preferred place name for each ZIP Code . This may be an incorporated town or city, a subentity of a large city or an unincorporated census - designated place, or a small unincorporated community . Additional place names may be recognized as acceptable for a certain ZIP Code . Still, others are deemed not acceptable, and if used may result in a delay in mail delivery . </P>

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