48198 is a zip code for Ypsilanti. It covers an area north of the Huron River, including parts of the City of Ypsilanti, Ypsilanti Township, Willow Run, and Superior Township, 

The corresponding ZCTA has an estimated population of 40,248 in the ACS 2021 5-year census.

Census reporter: https://censusreporter.org/profiles/86000US48198-48198/