Shiawassee County, MI: Cities, ZIP Codes & Population
Shiawassee County is a county-level area in Michigan identified by the FIPS code 26155. Our data lists 13 places in it, led by Owosso, MI, with combined estimates of about 39,647 people across those places. This page shows its cities, ZIP codes, time zone and neighboring counties.
What are the key facts about Shiawassee County?
| County | Shiawassee County |
|---|---|
| State | Michigan |
| FIPS code | 26155 |
| Places in our data | 13 |
| Places with a city page | 1 |
| Combined place estimates | 39,647 |
| Largest place | Owosso, MI (21,315) |
| Rank in state | 24th of 83 counties by combined place population |
| Weighted density | 1,975 per sq mi |
| Time zone | Eastern time |
| ZIP codes | 12 |
Which cities and towns are in Shiawassee County?
Shiawassee County has 1 place large enough for a full page on this site. They are ranked below by estimated population, together with whether each is incorporated, its density in people per square mile and the number of ZIP codes it uses. Owosso, MI is the largest.
| Place | Type | Population | Per sq mi | ZIPs |
|---|---|---|---|---|
| Owosso, MI | Incorporated | 21,315 | 2,751 | 1 |
The county also contains 12 smaller communities that appear here but do not have separate pages because their populations are too small for reliable data: Durand, Perry, Corunna, Laingsburg, Morrice, Middletown, Vernon, New Lothrop, Byron, Bancroft, Lennon, Henderson. Residents of these places often depend on the county for services such as roads, courts and public health.
How large is Shiawassee County compared with other counties in Michigan?
Adding up the estimates for the places in our data gives 39,647 people, which ranks Shiawassee County 24th among 83 counties in Michigan. The average listed place has about 3,050 residents. The weighted density is about 1,975 people per square mile, which is suburban by our scale. These totals add up place estimates, so they can differ from the official county population, which includes people outside any listed place. See why population figures differ.
What ZIP codes are in Shiawassee County?
The places in Shiawassee County use 12 ZIP codes: 48414, 48418, 48429, 48449, 48460, 48476, 48817, 48841, 48848, 48857, 48867, 48872. Every code begins with 4, which is assigned to the Great Lakes and Ohio Valley (Indiana, Kentucky, Michigan and Ohio). A ZIP code can cross county lines, so a code listed here may also serve addresses in a neighboring county. Use the ZIP code lookup to check a single code, or read how ZIP codes work.
Which counties are near Shiawassee County?
The closest counties by distance between the average locations of their places are listed below. The distance is a rough guide to how close the areas are, because county shapes vary widely.
- Genesee County, MI — about 20 miles east (center to center), 433,137 people in listed places
- Clinton County, MI — about 24 miles west (center to center), 23,596 people in listed places
- Ingham County, MI — about 26 miles southwest (center to center), 464,514 people in listed places
- Livingston County, MI — about 28 miles south (center to center), 23,482 people in listed places
- Saginaw County, MI — about 29 miles north (center to center), 160,275 people in listed places
- Gratiot County, MI — about 35 miles northwest (center to center), 28,276 people in listed places
What does the FIPS code 26155 mean?
The first two digits, 26, identify Michigan, and the last three, 155, identify Shiawassee County inside that state. Government datasets use this code to join records without confusing counties that share a name. Our guide to counties and FIPS codes explains the numbering, and the Michigan hub lists every county we cover in the state.
Where to go next
Combined place populations are estimates from a compiled dataset and are not official county totals.