Shiawassee County, Michigan

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Shiawassee County, Michigan
Shiawassee County Courthouse 2.jpg
Shiawassee County Courthouse in Corunna
Map of Michigan highlighting Shiawassee County
Location in the state of Michigan
Map of the United States highlighting Michigan
Michigan's location in the U.S.
Founded September 10, 1822 (created)
1837 (organized)[1]
Named for Shiawassee River
Seat Corunna
Largest city Owosso
 • Total 541 sq mi (1,401 km2)
 • Land 531 sq mi (1,375 km2)
 • Water 10 sq mi (26 km2), 1.9%
 • (2010) 70,648
 • Density 132/sq mi (51/km²)
Congressional district 4th
Time zone Eastern: UTC-5/-4

Shiawassee /ˌʃ.əˈwɒs/ is a county located in the U.S. state of Michigan. As of the 2010 census, the population was 70,648.[2] The county seat is Corunna.[3] The county was founded in 1822 and organized in 1837.[1] Shiawassee County is named for the Shiawassee River, and means 'river that twists about'.[1]

In 2010, the center of population of Michigan was located in Shiawassee County, in the township of Bennington.[4]

Shiawassee County comprises the Owosso, MI Micropolitan Statistical Area and is included in the Lansing-East Lansing-Owasso, MI Combined Statistical Area.

The Shiawassee County Courthouse was built by Claire Allen, a prominent southern Michigan architect.


According to the U.S. Census Bureau, the county has a total area of 541 square miles (1,400 km2), of which 531 square miles (1,380 km2) is land and 10 square miles (26 km2) (1.9%) is water.[5] The Shiawassee River enters it from Genesee County in the southeast and flows through Corunna and Owosso in the center of the county, exiting to Saginaw County in the north.

Adjacent counties[edit]



  • I‑69 - runs east and west through the middle of the county
  • M‑13 - runs north and south along the border with Genesee County, starting north of I-69 near Lennon
  • M‑21 - runs east and west through the middle of the county, including Corunna and Owosso
  • M‑52 - runs north and south through the middle of the county, including Owosso
  • M‑71 - connects I-69 to Corunna and Owosso, starting at I-69 near Durand


The train runs from Port Huron to Chicago.


Historical population
Census Pop.
1840 2,103
1850 5,230 148.7%
1860 12,349 136.1%
1870 20,858 68.9%
1880 27,059 29.7%
1890 30,952 14.4%
1900 33,866 9.4%
1910 33,246 −1.8%
1920 35,924 8.1%
1930 39,517 10.0%
1940 41,207 4.3%
1950 45,967 11.6%
1960 53,446 16.3%
1970 63,075 18.0%
1980 71,140 12.8%
1990 69,770 −1.9%
2000 71,687 2.7%
2010 70,648 −1.4%
Est. 2013 68,900 −2.5%
U.S. Decennial Census[6]
1790-1960[7] 1900-1990[8]
1990-2000[9] 2010-2013[2]

As of the 2010 census[10] indicates Shiawassee County had a 2010 population of 70,648. This is a decrease of -1,039 people from the 2000 United States Census. Overall, the county had a -1.4% growth rate during this ten-year period. In 2010 there were 27,481 households and 19,397 families in the county. The population density was 133.1 per square mile (51.4 square kilometers). There were 30,319 housing units at an average density of 57.1 per square mile (22.0 square kilometers). 96.7% of the population were White, 0.5% Native American, 0.5% Black or African American, 0.4% Asian, 0.5% of some other race and 1.5% of two or more races. 2.4% were Hispanic or Latino (of any race). 22.2% were of German, 21.8% English, 9.5% Irish, 5.2% French, French Canadian or Cajun and 5.1% Polish ancestry according to 2010 American Community Survey.[11]

There were 27,481 households out of which 32.5% had children under the age of 18 living with them, 53.8% were husband and wife families, 11.6% had a female householder with no husband present, 29.4% were non-families, and 24.2% were made up of individuals. The average household size was 2.54 and the average family size was 2.99.

In the county the population was spread out with 24.1% under age of 18, 8.5% from 18 to 24, 23.9% from 25 to 44, 29.1% from 45 to 64, and 14.3% who were 65 years of age or older. The median age was 40 years. For every 100 females there were 97.7 males. For every 100 females age 18 and over, there were 94.6 males.

The 2010 American Community Survey 1-year estimate[10] indicates the median income for a household in the county was $46,528 and the median income for a family was $52,614. Males had a median income of $32,155 versus $19,301 for females. The per capita income for the county was $21,103. About 10.6% of families and 15.4% of the population were below the poverty line, including 22.1% of those under the age 18 and 5.8% of those age 65 or over.


The county government operates the jail, maintains rural roads, operates the major local courts, keeps files of deeds and mortgages, maintains vital records, administers public health regulations, and participates with the state in the provision of welfare and other social services. The county board of commissioners controls the budget but has only limited authority to make laws or ordinances. In Michigan, most local government functions — police and fire, building and zoning, tax assessment, street maintenance, etc. — are the responsibility of individual cities and townships.

Elected officials[edit]

Governor:Rick Snyder (R) LT. Governor: Brian Calley (R) Attorney General: Bill Schuette (R) Secretary of State: Ruth Johnson (R) State Senator 24nd District: Rick Jones (R) State Rep. 85th District: Ben Glardon (R) U.S.Rep 4th District: John Moolenaar (R) Prosecutor: Deana M. Finnegan (R) Sheriff: George Braidwood (D) County Clerk: Lauri Braid (R) County Treasurer: Thomas W. Dwyer (R) Register of Deeds: Lori Kimble (R) Drain Commissioner: Tony Newman(D) County Surveyor: William Wascher (R) Road Commissioners: Mike Constine; Stephen A. Zemcik; John Michalec County Commissioners District 1: Hartmann Aue (R) District 2: John Horvath (D) District 3: Gary Holhausen (R) District 4: Les Schneider (D) District 5: Jeremy Root (R) District 6: Jeff Bartz (D) District 7: John Plowman (R) (information as of January 2014)




Unincorporated communities[edit]


See also[edit]


  1. ^ a b c "Bibliography on Shiawassee County". Clarke Historical Library, Central Michigan University. Retrieved January 29, 2013. 
  2. ^ a b "State & County QuickFacts". United States Census Bureau. Retrieved August 29, 2013. 
  3. ^ "Find a County". National Association of Counties. Retrieved 2011-06-07. 
  4. ^ "Centers of Population by State: 2010". United States Census Bureau. Retrieved October 2, 2014. 
  5. ^ "2010 Census Gazetteer Files". United States Census Bureau. August 22, 2012. Retrieved September 28, 2014. 
  6. ^ "U.S. Decennial Census". United States Census Bureau. Retrieved September 28, 2014. 
  7. ^ "Historical Census Browser". University of Virginia Library. Retrieved September 28, 2014. 
  8. ^ "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved September 28, 2014. 
  9. ^ "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000". United States Census Bureau. Retrieved September 28, 2014. 
  10. ^ a b "American Factfinder". United States Census Bureau accessdate=March 11, 2012. 
  11. ^

External links[edit]

Coordinates: 42°57′N 84°08′W / 42.95°N 84.14°W / 42.95; -84.14