Saginaw County, Michigan
County seat: Saginaw · Population 187,688 (2025) · 801 sq mi
Saginaw County is the 11th most populous of Michigan's 83 counties, with 187,688 people (2025 estimate). Its county seat is Saginaw. It is part of the East Central (Region 5) region, one of the 10 Michigan prosperity regions. The map shows its 9 cities and towns and the 6 neighboring counties.
Saginaw County facts
- County seat
- Saginaw
- Population (2025 estimate)
- 187,688 −1.3% since 2020
- Land area
- 801 sq mi 21st largest of 83
- Water area
- 15 sq mi
- Population density
- 234 per sq mi
- Established
- 1822
- Largest city
- Saginaw 42,863
- Median household income
- $60,622
- Cities and towns
- 9 plus 7 CDPs
- ZIP codes
- 28
- Time zone
- Eastern
- FIPS code
- 26145
Cities and towns in Saginaw County
Saginaw County has 9 incorporated cities, towns and villages. Populations count the people living inside Saginaw County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Saginaw (county seat) | City | 42,863 | |
| Frankenmuth | City | 5,197 | |
| Chesaning | Village | 2,399 | |
| St. Charles | Village | 1,941 | |
| Birch Run | Village | 1,540 | |
| Zilwaukee | City | 1,489 | |
| Merrill | Village | 669 | |
| Oakley | Village | 290 | |
| Reese | Village | 14 | Tuscola County |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Freeland | 7,557 | |
| Shields | 7,402 | |
| Bridgeport | 6,884 | |
| Buena Vista | 5,798 | |
| Hemlock | 1,529 | |
| Burt | 1,339 | |
| Robin Glen-Indiantown | 660 |
ZIP codes in Saginaw County
28 ZIP codes reach into Saginaw County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 48415 also Tuscola and Genesee counties
- 48417
- 48420 also Genesee and Tuscola counties
- 48457 also Genesee County
- 48460 also Shiawassee and Genesee counties
- 48601
- 48602
- 48603
- 48604 also Bay County
- 48607
- 48609
- 48614 also Gratiot County
- 48616 also Shiawassee County
- 48623 also Midland and Bay counties
- 48626 also Midland County
- 48637 also Midland and Gratiot counties
- 48638
- 48649 also Shiawassee County
- 48655
- 48708 also Bay County
- 48722
- 48724
- 48734 also Tuscola County
- 48747 also Bay County
- 48757 also Tuscola and Bay counties
- 48807 also Gratiot County
- 48831 also Clinton, Shiawassee and Gratiot counties
- 48841 also Shiawassee County
Population of Saginaw County, 2020–2025
Saginaw County shrank by 2,452 people (−1.3%) between April 2020 and July 2025: 2,799 more deaths than births and a net gain of 311 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 189,853 |
| 2021 | 189,479 |
| 2022 | 188,392 |
| 2023 | 187,758 |
| 2024 | 187,762 |
| 2025 | 187,688 |
Neighboring counties
- Bay County north · 102,123 people
- Gratiot County west · 41,190 people
- Shiawassee County south · 67,681 people
- Genesee County southeast · 401,093 people
- Tuscola County east · 52,680 people
- Midland County northwest · 83,754 people
Printable Saginaw County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (159 KB)
- PNG (2400 px) (79 KB)
Paste this code to embed the map on your site:
Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
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