ZIP codes in Midland County
20 ZIPs touch Midland County, Michigan. The blue dashed line is the county border; orange ZIPs reach into it.
20
ZIP codes
13
cross the county line
179,690
people in these ZIPs
83
counties in MI
Most people
Midland County ZIP list
More counties in Michigan
- Macomb County44
- Manistee County15
- Marquette County17
- Mason County10
- Mecosta County17
- Menominee County15
- Missaukee County9
- Monroe County26
- Montcalm County26
- Montmorency County5
- Muskegon County22
- Newaygo County22
Questions people actually ask
How many ZIP codes are in Midland County, Michigan?
20 ZIP codes reach into Midland County, including 4 PO Box or single-address ZIPs placed by the town they serve. 13 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Midland County has the most people?
48858 (Mount Pleasant) has about 42,226 residents, the most of any ZIP touching Midland County, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in Midland 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 Midland 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