Sullivan County is a county located in the northern portion of the U.S. state of Missouri. As of the 2020 census, the population was 5,999. Its county seat is Milan. The county was organized February 14, 1845, and named for Major General John Sullivan of the American Revolutionary War.
History In 1682, René-Robert Cavelier, Sieur de la Salle claimed the territory west of the Mississippi River for France, which included present-day Sullivan County. The United States acquired this region under terms of the Louisiana Purchase on July 4, 1803. Twenty-one years later, the Sauk, Meskwaki, and Iowa Native American nations ceded their tribal land to the U.S. government under two treaties in August 1824.
Dr. Jacob Holland and his son, Robert W. Holland, arrived in 1836, becoming the county's first permanent White settlers. Dr. Holland, a veteran of the Black Hawk War and practitioner of herbal medicine, and son staked their home sites at the Main Locust Creek Settlement near a place called Scottsville.MOGenWeb Project, Sullivan County, Missouri, Early Settlements of Sullivan County American pioneers from Ohio, Illinois, Kentucky, Tennessee, and Virginia quickly followed them and established farms and small businesses at Pharsalia (Milan) Settlement, Yellow Creek Settlement, and Jackson's Corners (Jacksonville) by 1840.
The Missouri state legislature defined the boundaries of the county from Chariton County during the 1842–1843 legislative session, and first named it Highland County. However, the number of permanent settlers did not meet requirements for civil governance and military purposes, so legislators attached administration of Highland County to Linn County. A new survey of the county in 1844 determined that the population was sufficient to permit full organization. E.M.C. Morelock, a representative from Highland County, presented an act to the state legislature, which they approved on February 14, 1845, and the county became formally organized. By the same act, it was renamed Sullivan County in honor of John Sullivan, a major general in the Continental Army during the American Revolutionary War.
Settlers established the town of Milan (pronounced MY-lun) in 1845, located at the center of the county, where the first courts met. William Putnam built the first courthouse, which was occupied in October 1847. Ten years later, residents leveled an Indian mound in the middle of town to make the public square and Major John McCollough built the second courthouse, the first brick structure in Milan, on this site during 1857–1858.University of Missouri Extension, Encyclopedia of Missouri Courthouses, Sullivan County Courthouse. Retrieved September 14, 2011. (This courthouse was destroyed by fire in 1908 and it was not until 1938 that it was replaced by the three-story limestone building that stands today.) The last United States General Land Office established in Missouri also operated from the square from 1849 to 1859. The state legislature officially incorporated the city of Milan on February 8, 1859. Other towns platted in the county's early years included Greencastle (1857), Newtown (1858), Pollock (1873), Boynton and Cora (1877), Green City and Winigan (1880), Humphreys and Reger (1881), Osgood (1886), and Harris (1887). Green City College opened in 1885, and a business institute opened in Humphreys in 1884.
During the U.S. Civil War (1861–1865), a Union Army post stood in Milan. The Union cause was supported by four Union volunteer infantry regiments, two Union cavalry volunteer regiments, two Missouri Militia units, one provisional militia unit, and a large unit of Sullivan County Home Guards. The Confederate side was supported by four units of Missouri State Guard infantrymen. Soldiers from Sullivan County fought at the Battle of Shiloh, Battle of Atlanta, Battle of Jonesborough, and other major engagements throughout the war. Military skirmishes within the county were mostly confined to bushwhackers.
Expansion of the railroads brought growth to Sullivan County beginning in the 1870s. The C., B. & K.C. (Chicago, Burlington and Kansas City Railway) built a line running north to south through the county in 1876, which was followed by construction of the Quincy, Missouri & Pacific Railway line east to west through the county from 1878 to 1881. The two lines crossed in Milan, which became a major shipping point. The Chicago, Milwaukee & St. Paul Railway soon built a north–south line along Medicine Creek the length of the western edge of the county that served the towns of Newtown and Harris, which continues to be active today. (All three railroads eventually merged into the Chicago, Burlington and Quincy Railroad.)
By 1900, following the railroad construction boom, the county's population exceeded 20,000. However, business activity and the number of residents declined steadily during the subsequent decades. The number of farms decreased from about 3,100 in 1900 to under 900 by 1982, but over the same time period, the size of farms increased from about 130 acres to 385 acres. The county primarily remains rural agricultural land today, planted in corn and grains with family operated poultry, livestock, and dairy farms.United States Department of Agriculture, Soil Survey of Sullivan County, Missouri, April 1985 One medium size manufacturer in Milan employs about 750 people.
Geography According to the U.S. Census Bureau, the county has a total area of , of which is land and (0.5%) is water.
The main water courses in Sullivan County are Medicine, Locust, East Locust, Yellow, and Spring Creeks. The highest point in the county, about above sea level, is on the primary divide between the Chariton River and Grand River drainage basins along its northern border shared with Putnam County northwest of Green City. The lowest point, about above sea level, is where Locust Creek flows out of the county on its southern border with Linn County, near the town of Browning.United States Department of Agriculture, Soil Survey of Sullivan County, Missouri, April 1995.
Adjacent counties Putnam County (north) Adair County (east) Linn County (south) Grundy County (southwest) Mercer County (northwest)
Major highways Route 5 Route 6 Route 11 Route 129 Route 139
Demographics
2020 census As of the 2020 census, the county had a population of 5,999 and a median age of 42.1 years. 23.3% of residents were under the age of 18 and 20.1% of residents were 65 years of age or older. For every 100 females there were 106.6 males, and for every 100 females age 18 and over there were 104.8 males.
The racial makeup of the county was 78.0% White, 3.5% Black or African American, 0.9% American Indian and Alaska Native, 0.5% Asian, 0.0% Native Hawaiian and Pacific Islander, 9.1% from some other race, and 8.0% from two or more races. Hispanic or Latino residents of any race comprised 17.6% of the population.
0.0% of residents lived in urban areas, while 100.0% lived in rural areas.
There were 2,484 households in the county, of which 29.3% had children under the age of 18 living with them and 23.6% had a female householder with no spouse or partner present. About 32.5% of all households were made up of individuals and 14.9% had someone living alone who was 65 years of age or older. There were 3,024 housing units, of which 17.9% were vacant. Among occupied housing units, 69.7% were owner-occupied and 30.3% were renter-occupied. The homeowner vacancy rate was 1.1% and the rental vacancy rate was 12.1%.
Racial and ethnic composition +Sullivan County, Missouri – Racial and ethnic compositionRace / Ethnicity (NH = Non-Hispanic)Pop 1980Pop 1990Pop 2000Pop 2010 Pop 2020% 1980% 1990% 2000% 2010% 2020White alone (NH)7,3606,2816,5085,3504,50799.00%99.29%90.15%79.68%75.13%Black or African American alone (NH)519302080.07%0.02%0.12%0.45%3.47%Native American or Alaska Native alone (NH)20141232260.27%0.22%0.17%0.48%0.43%Asian alone (NH)52108290.07%0.03%0.14%0.12%0.48%Native Hawaiian or Pacific Islander alone (NH)x included in the Asian category in the 1980 Censusx included in the Asian category in the 1990 Census511xx0.07%0.01%0.02%Other race alone (NH)3004140.04%0.00%0.00%0.06%0.23%Mixed race or Multiracial (NH)x not an option in the 1980 Censusx not an option in the 1990 Census4141160xx0.57%0.61%2.67%Hispanic or Latino (any race)41286341,2481,0540.55%0.44%8.78%18.59%17.57%Total7,4346,3267,2196,7145,999 100.00%100.00%100.00%100.00%100.00%
2010 census As of the census of 2010, there were 6,714 people, 2,925 households, and 1,959 families residing in the county. The population density was . There were 3,364 housing units at an average density of . The racial makeup of the county was 88.73% White, 0.51% Black or African American, 0.66% Native American, 0.12% Asian, 0.13% Pacific Islander, 8.67% from other races, and 1.19% from two or more races. Approximately 18.59% of the population were Hispanic or Latino of any race, making Sullivan County the most heavily Hispanic/Latino county in Missouri.
There were 2,925 households, out of which 29.60% had children under the age of 18 living with them, 53.30% were married couples living together, 9.10% had a female householder with no husband present, and 33.00% were non-families. 29.10% of all households were made up of individuals, and 15.00% had someone living alone who was 65 years of age or older. The average household size was 2.42 and the average family size was 2.95.
In the county, the population was spread out, with 25.00% under the age of 18, 7.50% from 18 to 24, 26.30% from 25 to 44, 22.70% from 45 to 64, and 18.50% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 100.10 males. For every 100 females age 18 and over, there were 97.70 males.
The median income for a household in the county was $26,107, and the median income for a family was $33,590. Males had a median income of $23,245 versus $19,167 for females. The per capita income for the county was $13,392. About 11.00% of families and 16.50% of the population were below the poverty line, including 19.60% of those under age 18 and 20.90% of those age 65 or over.
Education
Public schools Green City R-I School District – Green City Green City Elementary School (PK-06) Green City High School (07-12) Milan C-2 School District – Milan Milan Elementary School (PK-04) Milan Middle School (05-08) Milan High School (09-12) Newtown-Harris R-III School District – Newtown Newtown-Harris Elementary School (PK-06) Newtown-Harris High School (07-12)
Public libraries Sullivan County Library
Communities Cities
Browning (partly in Linn County) Green City Greencastle Harris Milan (county seat) Newtown
Villages Humphreys Osgood Pollock
Census-designated place Winigan
Unincorporated communities Owasco Reger
Former communities SourceGNIS, Query Results: Sullivan County, Missouri
Bairdston Boynton Brown Bute Cookman Cora Jacksonville Judson Lindley Mystic Opel Parsons Paw Paw Pennville Scottsville Sorrell Sticklerville Wintersville
Townships SourceMOGenWeb Project, Sullivan County Townships
Bowman Buchanan Clay Duncan Jackson Liberty Morris Penn Pleasant Hill Polk Taylor Union
Notable people Gene Bartow - Hall of Fame college basketball coach and NBA executive. Fred Burke - bank robber and gangster, lived under an alias for several months near Green City before being captured there in March 1931. Bud Houser - Winner of multiple Olympic medals in track and field events. Born in Winigan.
Politics
Local The Republican and Democratic parties equally control politics at the local level in Sullivan County. Both parties hold about half of the elected positions in the county.
State