Oshkosh, WI Post Offices

Oshkosh, Wisconsin has a population of 66,495. According to the 2021 census, the city's 3 post offices serve 26,435 households with a median income of 26,435. The city is located in Winnebago County and has a land area of 69,983,046 and a water area of 2,614,647.

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