Bay County, MI ZIP codes
Bay County ZIP codes by town
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
Map of Bay County ZIP codes
The ZIP codes of Bay County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Bay County in numbers
About 103,008 people live in Bay County, in 45,103 households, the 20th most populous of Michigan's 83 counties. The median household income is $61,763 a year, 15% below the Michigan median of $72,875 (US: $80,734). The median owner-occupied home is valued at $152,200 (34% below the Michigan median), and median gross rent is $860 a month. The median age is 43.9; 22.1% of adults 25 and over hold a bachelor's degree or higher (32.4% across Michigan); the average commute takes 23 minutes.
| Population | 103,008 |
|---|---|
| Households | 45,103 |
| Median age | 43.9 |
| Median household income | $61,763 |
| Median home value | $152,200 |
| Median gross rent | $860 |
| Bachelor's degree or higher | 22.1% |
| Mean commute | 23.1 min |
| Population density | 233 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Bay County
| Town | ZIP codes | Population |
|---|---|---|
| Bay City | 3 | 32,320 |
| Linwood | 1 | 4,334 |
| Kawkawlin | 1 | 3,681 |
| Essexville | 1 | 3,327 |
| Auburn | 1 | 2,124 |
| Munger | 1 | 1,549 |
| Pinconning | 1 | 1,448 |
| Bentley | 1 | 1,081 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Bay County.
Not sure you are in Bay County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Bay County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
48611 | Auburn , MI | Standard | 6,093 | $87,963 | $177,100 |
48613 | Bentley , MI | Standard | 1,081 | $58,846 | $160,900 |
48631 | Kawkawlin , MI | Standard | 3,681 | $74,398 | $172,200 |
48634 | Linwood , MI | Standard | 4,334 | $87,992 | $167,400 |
48650 | Pinconning , MI | Standard | 6,510 | $61,911 | $151,800 |
48706 | Bay City , MI | Standard | 38,974 | $62,747 | $155,800 |
48707 | Bay City , MI | No street area | — | — | — |
48708 | Bay City , MI | Standard | 25,635 | $50,518 | $107,700 |
48710 | University Center , MI | Standard | 0 | — | — |
48732 | Essexville , MI | Standard | 11,340 | $57,903 | $169,600 |
48747 | Munger , MI | Standard | 1,549 | $81,458 | $141,300 |
Cite this page
zipcodes.pro. “Bay County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/mi/county/bay
Underlying data is public domain or openly licensed — sources, vintages and licences.