Bay County, Michigan ZIP codes
11 ZIP codes are in Bay County, plus 7 that cross in from neighboring counties. It's part of the Bay City, MI metro area.
- ZIP codes
- 11
- Population in these ZIPs
- 99,197
- Avg. median income
- $62,300population-weighted
- Cities & towns
- 9
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Bay County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 48611 | Auburn | 6,093 | $87,963 | $236,600 |
| 48613 | Bentley | 1,081 | $58,846 | $200,800 |
| 48631 | Kawkawlin | 3,681 | $74,398 | $230,500 |
| 48634 | Linwood | 4,334 | $87,992 | $209,800 |
| 48650 | Pinconning | 6,510 | $61,911 | $187,800 |
| 48706 | Bay City | 38,974 | $62,747 | $192,300 |
| 48707 PO Box | Bay City | — | — | — |
| 48708 | Bay City | 25,635 | $50,518 | $137,800 |
| 48710 | University Center | 0 | — | — |
| 48732 | Essexville | 11,340 | $57,903 | $207,400 |
| 48747 | Munger | 1,549 | $81,458 | $221,400 |
ZIP codes partly in Bay County
These ZIP codes are mostly in a neighboring county but cover part of Bay County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 48604 | Saginaw | Saginaw County | 11,011 | $53,042 | $142,800 |
| 48623 | Freeland | Saginaw County | 15,129 | $101,250 | $301,200 |
| 48642 | Midland | Midland County | 34,039 | $77,847 | $255,900 |
| 48652 | Rhodes | Gladwin County | 1,832 | $69,766 | $216,000 |
| 48658 | Standish | Arenac County | 4,694 | $53,750 | $165,300 |
| 48659 | Sterling | Arenac County | 2,563 | $58,750 | $174,100 |
| 48757 | Reese | Tuscola County | 3,708 | $73,832 | $221,700 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Bay County
Nearby counties
Frequently asked questions
How many ZIP codes are in Bay County, Michigan?
11 ZIP codes are mainly in Bay County, and 7 more ZIP codes from neighboring areas reach partly into it.
What cities are in Bay County?
ZIP codes in Bay County use the city names Auburn, Bay City, Bentley, Essexville, Kawkawlin, Linwood, Munger, Pinconning and University Center.
What metro area is Bay County in?
Bay County is part of the Bay City, MI metropolitan statistical area.