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Clinton County, Michigan facts for kids

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Clinton County
Clinton County Courthouse in St. Johns
Clinton County Courthouse in St. Johns
Flag of Clinton County
Official seal of Clinton County
Map of Michigan highlighting Clinton County
Location within the U.S. state of Michigan
Map of the United States highlighting Michigan
Michigan's location within the U.S.
Country  United States
State  Michigan
Founded 1831
Named for DeWitt Clinton
Seat St. Johns
Largest city St. Johns
 • Total 574 sq mi (1,490 km2)
 • Land 566 sq mi (1,470 km2)
 • Water 8.1 sq mi (21 km2)  1.4%%
 • Total 79,128
 • Density 133/sq mi (51/km2)
Time zone UTC−5 (Eastern)
 • Summer (DST) UTC−4 (EDT)
Congressional district 4th

Clinton County is a county in the U.S. state of Michigan. As of the 2020 Census, the population was 79,128. The county seat is St. Johns. The county was created in 1831 and organized in 1839. It is named after early American politician DeWitt Clinton.

Clinton County is included in the Lansing-East Lansing, MI Metropolitan Statistical Area.


According to the U.S. Census Bureau, the county has a total area of 575 square miles (1,490 km2), of which 566 square miles (1,470 km2) is land and 8.1 square miles (21 km2) (1.4%) is water.

Adjacent counties


Historical population
Census Pop.
1840 1,614
1850 5,102 216.1%
1860 13,916 172.8%
1870 22,845 64.2%
1880 28,100 23.0%
1890 26,509 −5.7%
1900 25,136 −5.2%
1910 23,129 −8.0%
1920 23,110 −0.1%
1930 24,174 4.6%
1940 26,671 10.3%
1950 31,195 17.0%
1960 37,969 21.7%
1970 48,492 27.7%
1980 55,893 15.3%
1990 57,883 3.6%
2000 64,753 11.9%
2010 75,382 16.4%
2020 79,128 5.0%
U.S. Decennial Census
1790-1960 1900-1990
1990-2000 2010-2018

As of the census of 2000, there were 64,753 people, 23,653 households, and 17,976 families residing in the county. The population density was 113 people per square mile (44/km2). There were 24,630 housing units at an average density of 43 per square mile (17/km2). The racial makeup of the county was 96.40% White, 0.63% Black or African American, 0.44% Native American, 0.52% Asian, 0.04% Pacific Islander, 0.81% from other races, and 1.17% from two or more races. 2.61% of the population were Hispanic or Latino of any race. 35.3% were of German, 11.4% English, 10.1% American and 8.5% Irish ancestry, 96.4% spoke English and 1.9% Spanish as their first language.

There were 23,653 households, out of which 37.40% had children under the age of 18 living with them, 64.30% were married couples living together, 8.40% had a female householder with no husband present, and 24.00% were non-families. 19.80% of all households were made up of individuals, and 7.10% had someone living alone who was 65 years of age or older. The average household size was 2.70 and the average family size was 3.12.

In the county, the population was spread out, with 28.10% under the age of 18, 7.30% from 18 to 24, 29.20% from 25 to 44, 24.50% from 45 to 64, and 10.90% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 98.90 males. For every 100 females age 18 and over, there were 95.60 males.

The median income for a household in the county was $52,806, and the median income for a family was $60,491. Males had a median income of $42,379 versus $31,065 for females. The per capita income for the county was $22,913. About 3.30% of families and 4.60% of the population were below the poverty line, including 5.30% of those under age 18 and 6.00% of those age 65 or over.



  • I-69 travels across southern Clinton County bypassing Lansing on the north. To the south, I-69 continues toward Battle Creek and Fort Wayne, Indiana. Easterly, the highway travels on to Flint and Port Huron.
  • I-73 is planned to parallel or overlap with US Route 127.
  • I-96 runs through the southwestern corner of the county before turning southerly to bypass Lansing. It connects Grand Rapids and Muskegon to the west with Detroit on the east.
  • BL I-69 is a business loop running through Lansing and East Lansing. A small portion of the route exists in southeastern Clinton County.
  • BL I-96 is a business loop running through Lansing. A small portion of the route exists in southern Clinton County.
  • US 127 runs north–south through the center portion of the county, serving both St. Johns and DeWitt. US 127 continues northerly toward Mt. Pleasant and Grayling, and southerly past Lansing and on toward Jackson.

  • Bus. US 127 is a loop route through St. Johns.
  • M-21 passes east–west through Fowler, St. Johns, Shepardsville and Ovid. M-21 provides a link to Grand Rapids, approximately 66 miles (106 km) to the west, and Flint, about 45 miles (72 km) to the east.
  • M-100 has a short segment in southwestern Clinton County. From a beginning at I-69 in Eaton County, it terminates at I-96 north of Grand Ledge.


Capital Region International Airport (IATA: LANICAO: KLANFAA LID: LAN) is a public, Class C airport located 3 miles (5 km) northwest of downtown Lansing, primarily in DeWitt Township. The airport accessible by Grand River Avenue (Business Route 96) and is located 1.5 miles (2.4 km) south of Interstate 69.

Abrams Municipal Airport (FAA LID: 4D0) is a city-owned, public-use airport located two nautical miles (3.7 km) north of the central business district of Grand Ledge, a city in Eaton County. The airport is accessible by road from Wright Road (M-100), and is located 2.1 miles (3.4 km) south of Interstate 96, just east of M-100.




Census-designated places

Other unincorporated places


Images for kids

See also

Kids robot.svg In Spanish: Condado de Clinton (Míchigan) para niños

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John T. Biggers
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