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Jefferson County
County
The Jefferson County Courthouse in Hillsboro
Seal
Location within the U.S. state of Missouri
Missouri's location within the U.S.
Coordinates: 38°16′N 90°32′W / 38.26°N 90.54°W / 38.26; -90.54
Country	United States
State	Missouri
Founded	1818
Named for	Thomas Jefferson
Seat	Hillsboro
Largest city	Arnold
Area
• Total	664 sq mi (1,720 km)
• Land	657 sq mi (1,700 km)
• Water	7.7 sq mi (20 km)  1.2%
Population
• Total	226,739
Time zone	UTC−6 (Central)
• Summer (DST)	UTC−5 (CDT)
Congressional districts	2nd, 3rd, 8th
Website	www.jeffcomo.org

Jefferson County is located in the eastern portion of the U.S. state of Missouri. It is a part of the St. Louis Metropolitan Area. As of the 2020 census, the population was 226,739, making it the sixth-most populous county in Missouri. Its county seat is Hillsboro. The county was organized in 1818 and named in honor of former president Thomas Jefferson. In 1980, according to the U.S. census held that year, the county contained the mean center of U.S. population. Notably, this was the first census in which the center of population was west of the Mississippi River. Jefferson County is part of the St. Louis Metropolitan Statistical Area and encompasses many of the city's southern suburbs.

Geography

According to the U.S. Census Bureau, the county has a total area of 664 square miles (1,720 km), of which 657 square miles (1,700 km) is land and 7.7 square miles (20 km) (1.2%) is water. The county's eastern border is the Mississippi River.

Adjacent counties

• St. Louis County (north)
• Monroe County, Illinois (east)
• Ste. Genevieve County (southeast)
• St. Francois County (south)
• Washington County (southwest)
• Franklin County (west)

Major highways

• Interstate 55
• U.S. Route 61
• U.S. Route 67
• Route 21
• Route 30
• Route 109
• Route 110
• Route 141
• Route 231

National protected area

• Middle Mississippi River National Wildlife Refuge (part)

Demographics

As of the 2020 Census Jefferson County had a population of 226,739. The ethnic and racial makeup of the county was 90.4% white (89.7% non-Hispanic white), 1.0% black or African American, 0.3% American Indian, 0.8% Asian, 0.8% some other race, and 6.6% two or more races. 2.4% of the population was of Hispanic or Latino origin.

As of the 2010 Census Jefferson County had a population of 218,733. The reported ethnic and racial make up of the population was 95.4% non-Hispanic white, 0.8% African-American, 0.3% Native American, 0.6% Asian, 0.4% reporting some other race, 1.3% reporting two or more races and 1.6% Hispanic or Latino of any race.

As of the census of 2000, there were 198,099 people, 71,499 households, and 54,553 families residing in the county. The population density was 302 inhabitants per square mile (117/km). There were 75,586 housing units at an average density of 115 units per square mile (44/km). The racial makeup of the county was 97.48% White, 0.68% Black or African American, 0.29% Native American, 0.36% Asian, 0.01% Pacific Islander, 0.24% from other races, and 0.93% from two or more races. Approximately 1.01% of the population were Hispanic or Latino of any race.

There were 71,499 households, out of which 38.90% had children under the age of 18 living with them, 61.00% were married couples living together, 10.40% had a female householder with no husband present, and 23.70% were non-families. 18.90% of all households were made up of individuals, and 6.10% had someone living alone who was 65 years of age or older. The average household size was 2.74 and the average family size was 3.12.

In the county, the population was spread out, with 27.90% under the age of 18, 8.50% from 18 to 24, 31.80% from 25 to 44, 22.50% from 45 to 64, and 9.20% who were 65 years of age or older. The median age was 35 years. For every 100 females there were 98.90 males. For every 100 females age 18 and over, there were 95.90 males.

The median income for a household in the county was $60,636, and the median income for a family was $66,697. Males had a median income of $37,822 versus $25,440 for females. The per capita income for the county was $25,058. About 4.90% of families and 6.80% of the population were below the poverty line, including 8.10% of those under age 18 and 6.30% of those age 65 or over.

There were 146,316 registered voters in 2008. As of October 24, 2012, there were 148,011.

2020 Census

Education

Public schools

• School District 47 - Crystal City
  • Crystal City High School - Crystal City
• De Soto School District 73 - De Soto
  • Early Childhood Center (PK)
  • Athena Elementary School (K-06)
  • Vineland Elementary School (K-06)
  • De Soto Jr. High School (07-08)
  • De Soto High School (09-12)
• Dunklin R-V School District - Herculaneum
• Festus R-IV School District - Festus
  • Festus Elementary School (K-03)
  • Festus Intermediate School (04-06)
  • Festus Middle School (07-08)
  • Festus High School (09-12)
• Fox C-6 School District - Arnold
• Grandview R-II School District - Hillsboro
  • Grandview Elementary School (K-05) - Hillsboro
  • Grandview Middle School (06-08) - Hillsboro
  • Grandview High School (09-12) - Ware
• Hillsboro R-3 School District - Hillsboro
  • Hillsboro Primary School (K-02)
  • Hillsboro Elementary School (03-04)
  • Hillsboro Middle School (05-06)
  • Hillsboro Jr. High School (07-08)
  • Hillsboro High School (09-12)
• Jefferson County R-VII School District - Festus
  • Plattin Primary School (PK-02) - Plattin
  • Telegraph Intermediate School (03-05) - Festus
  • Danby-Rush Tower Middle School (06-08) - Festus
  • Jefferson High School- Festus
• Northwest R-I School District - High Ridge
  • Brennan Woods Elementary School (K-05) - High Ridge
  • Cedar Springs Elementary School (K-05) - House Springs
  • High Ridge Elementary School (K-05) - High Ridge
  • House Springs Elementary School (K-05) - House Springs
  • Maple Grove Elementary School (K-05) - Dittmer
  • Murphy Elementary School (K-05) - High Ridge
  • Woodridge Middle School (06-08) - High Ridge
  • Valley Middle School (06-08) - House Springs
  • Northwest High School (09-12) - Cedar Hill
• Sunrise R-IX School District - De Soto
  • Sunrise Elementary School (K-08) - De Soto
• Windsor C-1 School District - Imperial

Private schools

• Christian Outreach School (K-12) - Hillsboro - Nondenominational Christian
• People's Christian Academy (K-12) - Arnold - Assembly of God/Pentecostal
• St. Pius X High School (09-12) - Festus - Roman Catholic
• Twin City Christian Academy (PK-12) - Festus - Baptist
• Good Shepherd Catholic School - (K-08) - Hillsboro - Roman Catholic
• Holy Child Elementary & Middle School - Arnold - (K-08) - Roman Catholic
• Manna Christian Academy - De Soto - (K-12) - Southern Baptist
• Our Lady's Catholic School - Festus - (K-08) - Roman Catholic
• Sacred Heart Catholic School - Festus - (K-08) - Roman Catholic
• St. Anthony's Catholic School - High Ridge - (K-08) - Roman Catholic
• St. Joseph's Catholic School - Imperial - (K-08) - Roman Catholic
• St. Johns Lutheran School - Arnold - (PK-08) - Lutheran
• St. Johns School - Imperial - (K-08) - Nondenominational Christianity
• St. Rose of Lima Catholic School - De Soto - (K-08) - Roman Catholic

Postsecondary

Jefferson College - Hillsboro: A public, two-year community college

Public libraries

• Crystal City Public Library
• De Soto Public Library
• Festus Public Library
• Herculaneum Public Library
• Jefferson County Public Library

Politics

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Local

Historically, the Democratic Party has controlled politics at the local level; starting in 2010 the Republican Party has flipped the county with 66% of the population voting Republican in 2020.

State

Jefferson County is divided into seven legislative districts in the Missouri House of Representatives; All of which are held by Republicans. Jefferson County consists of two State Senate Districts.

• District 111 Shane Roden (R-Cedar Hill). Consists of Byrnes Mill, Cedar Hill, Cedar Hill Lakes, House Springs, and Scottsdale.

• District 112 Rob Vescovo (R-Arnold). Consists of areas near Arnold and Byrnes Mill.

• District 113 Dan Shaul (R-Imperial). Consists of most Arnold, all of Imperial and Kimmswick, and part of Barnhart.

• District 114 Becky Ruth (R-Festus). Consists of part of Barnhart, and all of Crystal City, Festus, Herculaneum, and Pevely.

• District 115 Cyndi Buchheit-Courtway (R-Festus). Consists of Olympian Village and areas near De Soto.

• District 118 Mike McGirl (R-Potosi). Consists of De Soto and Hillsboro.

Jefferson County is also divided into two districts in the Missouri Senate.

• District 3 — Elaine Gannon (R-De Soto) Consists of De Soto, Hillsboro, and Olympian Village as well as part of Festus.

• District 22 — Paul Wieland (R-Imperial) Consists of the northern part of the county.

Federal

Jefferson County is divided among three congressional districts. Prior to the 2012 election all of it was included in Missouri's 3rd Congressional District, but now about half of it is in the 3rd District, while the northeastern portion is in the 2nd Congressional District and the southern portion is in the 8th Congressional District.

Political culture

A predominantly suburban county, Jefferson County used to be fairly independent-leaning at the federal level with a tendency to tilt Democratic. Presidential elections in Jefferson County were often very close; George W. Bush just narrowly carried the county in 2004 by less than 600 votes and by just over a half of a percentage point. Al Gore and Barack Obama also just narrowly carried the county in 2000 and 2008, respectively. Bill Clinton, however, did manage to carry Jefferson County by double digits both times in 1992 and 1996. However, in 2012 the county, in line with the state as a whole, began to swing hard to the right with Mitt Romney carrying it with 55% of the vote. In 2016 Donald Trump won the county with 65% of the vote, the largest margin of any candidate since Lyndon Johnson in 1964.

Typical of the suburban culture in most counties throughout the country, voters in Jefferson County tend to be rather centrist on social issues but more liberal on economic issues. In 2004, Missourians voted on a constitutional amendment to define marriage as the union between a man and a woman—it overwhelmingly passed Jefferson County with 72.56 percent of the vote. The initiative passed the state with 71 percent of support from voters as Missouri became the first state to ban same-sex marriage. In 2006, Missourians voted on a constitutional amendment to fund and legalize embryonic stem cell research in the state—it narrowly passed Jefferson County with 51.85 percent voting for the measure. The initiative narrowly passed the state with 51 percent of support from voters as Missouri became one of the first states in the nation to approve embryonic stem cell research. In 2006, Missourians voted on a proposition (Proposition B) to increase the minimum wage in the state to $6.50 an hour—it passed Jefferson County with 79.90 percent of the vote. The proposition strongly passed every single county in Missouri with 78.99 percent voting in favor as the minimum wage was increased to $6.50 an hour in the state. During the same election, voters in five other states also strongly approved increases in the minimum wage.

2008 Missouri presidential primary

Republican

U.S. Senator John McCain (R-Arizona) won Jefferson County with 33.54% of the vote. Former Governor Mitt Romney (R-Massachusetts finished in second with 30.45% of the vote, while former Governor Mike Huckabee (R-Arkansas) came in third with 30.19% in Jefferson County. Libertarian-leaning U.S. Representative Ron Paul (R-Texas) finished a distant fourth place with 3.94% of the vote in Jefferson County. McCain received all of Missouri's 58 delegates as the Republican Party utilizes the winner-takes-all system.

Democratic

U.S. Senator Hillary Clinton (D-New York) won Jefferson County over Senator Barack Obama (D-Illinois) with 61.32% of the vote, while Obama received 35.02% of the vote. Although he withdrew from the race, former U.S. Senator John Edwards (D-North Carolina) still received 2.74% of the vote in Jefferson County. Jefferson County gave Clinton one of her strongest showings in a predominantly suburban county in the entire country.

Clinton had a large initial lead in Missouri at the beginning of the evening as the rural precincts began to report, leading several news organizations to call the state for her; however, Obama rallied from behind as the heavily African American precincts from St. Louis began to report and eventually put him over the top. In the end, Obama received 49.32 percent of the vote to Clinton's 47.90% — a 1.42% difference. Both candidates split Missouri's 72 delegates, as the Democratic Party utilizes proportional representation.

Hillary Rodham Clinton received more votes, a total of 19,075, than any candidate from either party in Jefferson County during the 2008 Missouri Presidential Primaries. She also received more votes than the total number of votes cast in the entire Republican Primary in Jefferson County.

Health

According to a 2012 census study by the University of Wisconsin Population Health Institute and the Robert Wood Johnson Foundation, Jefferson County led the Saint Louis metropolitan area in the number of adults who smoke, roughly 30% of all adult residents of Jefferson County smoked or used tobacco in some form, compared to the 19% national average and the 24% Missouri state average. Jefferson County and the state of Missouri led the nation in methamphetamine production, peaking in the mid-2000s.

Jefferson County Parks and Recreation

Communities

Cities

• Arnold
• Byrnes Mill
• Crystal City
• De Soto
• Festus
• Herculaneum
• Hillsboro (county seat)
• Kimmswick
• Olympian Village
• Pevely

Villages

• Cedar Hill Lakes
• Lake Tekakwitha
• Parkdale
• Peaceful Village
• Scotsdale

Townships

• Big River
• Central
• High Ridge
• Joachim
• Meramec
• Plattin
• Rock
• Valle

Census-designated places

• Barnhart
• Briarwood Estates
• Cedar Hill
• High Ridge
• Horine
• Imperial
• LaBarque Creek
• Murphy
• Raintree Plantation
• Summer Set

Other unincorporated communities

• Antonia
• Bailey
• Belews Creek
• Bushburg
• Byrnesville
• Danby
• Dittmer
• Donnell
• Fletcher
• Flucom
• Frumet
• Goldman
• Grubville
• Hematite
• House Springs
• Jarvis
• Knorpp
• Liguori
• Local
• Ludwig
• Mapaville
• Melzo
• Meramec Heights
• Morse Mill
• Munsons
• Oermann
• Old Mines
• Papin
• Plattin
• Regina
• Riverside
• Rush Tower
• Seckman
• Selma
• Sulphur Springs
• Valles Mines
• Victoria
• Vineland
• Ware

See also

• List of counties in Missouri
• National Register of Historic Places listings in Jefferson County, Missouri
• Matthew "Mack" Harrison Marsden

References

1. "Explore Census Data".
2. "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
3. Eaton, David Wolfe (1916). How Missouri Counties, Towns and Streams Were Named. The State Historical Society of Missouri. pp. 179.
4. Gannett, Henry (1905). The Origin of Certain Place Names in the United States. Govt. Print. Off. pp. 168.
5. "2010 Census Gazetteer Files". United States Census Bureau. August 22, 2012. Archived from the original on October 21, 2013. Retrieved November 16, 2014.
6. "U.S. Decennial Census". United States Census Bureau. Retrieved November 16, 2014.
7. "Historical Census Browser". University of Virginia Library. Archived from the original on August 11, 2012. Retrieved November 16, 2014.
8. "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Archived from the original on December 3, 2014. Retrieved November 16, 2014.
9. "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). United States Census Bureau. Archived (PDF) from the original on December 18, 2014. Retrieved November 16, 2014.
10. "State & County QuickFacts". United States Census Bureau. Archived from the original on June 7, 2011. Retrieved September 9, 2013.
11. "Madison County, Illinois". United States Census Bureau. Retrieved January 10, 2022.
12. 2010 census report for Jefferson County, Missouri
13. "U.S. Census website". United States Census Bureau. Retrieved January 31, 2008.
14. "Registered Voters in Missouri 2008". Archived from the original on November 16, 2011.
15. "Registered Voters in Missouri". Archived from the original on October 25, 2012. Retrieved October 28, 2012. Retrieved on July 9, 2013
16. "P2 HISPANIC OR LATINO, AND NOT HISPANIC OR LATINO BY RACE – 2020: DEC Redistricting Data (PL 94-171) – Jefferson County, Missouri".
17. Breeding, Marshall. "Crystal City Public Library". Libraries.org. Archived from the original on May 10, 2018. Retrieved May 8, 2017.
18. Breeding, Marshall. "De Soto Public Library". Libraries.org. Archived from the original on May 10, 2018. Retrieved May 8, 2017.
19. Breeding, Marshall. "Festus Public Library". Libraries.org. Archived from the original on May 10, 2018. Retrieved May 8, 2017.
20. Breeding, Marshall. "Herculaneum Public Library". Libraries.org. Archived from the original on May 10, 2018. Retrieved May 8, 2017.
21. Breeding, Marshall. "Jefferson County Public Library". Libraries.org. Archived from the original on May 10, 2018. Retrieved May 8, 2017.
22. ^ https://www.jeffcomo.org/DocumentCenter/View/10797/11-3-2020-General-Presidential-Election-Summary-PDF
23. ^ https://www.jeffcomo.org/DocumentCenter/View/3500/11-2018---General-Election-Summary-PDF
24. ^ "Official Results November 8, 2016 General Election" (PDF). Jefferson County Clerk. November 8, 2016. Archived (PDF) from the original on April 3, 2017. Retrieved April 2, 2017.
25. ^ "November 4, 2014 General Election Official Results" (PDF). Jefferson County Clerk. November 4, 2014. Archived (PDF) from the original on November 29, 2014. Retrieved March 31, 2016.
26. ^ "Certification of Election Results" (PDF). Jefferson County Clerk. November 6, 2012. Archived (PDF) from the original on March 4, 2016. Retrieved March 31, 2016.
27. "June 4, 2013 Special Election" (PDF). Jefferson County Clerk. June 4, 2013. Archived (PDF) from the original on September 10, 2015. Retrieved March 31, 2016.
28. Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org. Archived from the original on March 23, 2018. Retrieved March 25, 2018.
29. lthorsen@post-dispatch.com > 636-937-6249, LEAH THORSEN • (April 9, 2012). "Jefferson County leads area in smoking rate". stltoday.com. Retrieved March 2, 2019.{{cite web}}: CS1 maint: numeric names: authors list (link)
30. "Jefferson County to Jefferson Countians: Quit Smoking Fatsos". Archived from the original on March 6, 2019. Retrieved March 2, 2019.
31. Stateline.org, Christine Vestal (July 17, 2017). "Meth making a comeback, but it's not your neighbors cooking it anymore". stltoday.com.

External links

• Digitized 1930 Plat Book of Jefferson County Archived August 16, 2011, at the Wayback Machine from University of Missouri Division of Special Collections, Archives, and Rare Books
• Jefferson County Heritage and Historical Society of Missouri
• Jefferson County Online
• https://www.sos.mo.gov/CMSImages/Publications/2021-2022_MO_Roster.pdf

v t e Places adjacent to Jefferson County, Missouri
St. Louis County Franklin County Jefferson County, Missouri Monroe County, Illinois Washington County St. Francois County Ste. Genevieve County

v t e Greater St. Louis
Illinois Missouri United States of America
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Central city	St. Louis
Largest cities (over 50,000 in 2020)	Chesterfield Florissant O'Fallon (Missouri) St. Charles St. Peters
Medium-sized cities (over 20,000 in 2020)	Affton CDP Alton Arnold Ballwin Belleville Cahokia Heights Collinsville Edwardsville Granite City Hazelwood Kirkwood Maryland Heights Mehlville CDP Oakville CDP O'Fallon (Illinois) University City Webster Groves Wentzville Wildwood
Largest towns and villages (over 10,000 in 2020)	Bellefontaine Neighbors Bridgeton Clayton Columbia Concord CDP Crestwood Creve Coeur Dardenne Prairie East St. Louis Fairview Heights Farmington Ferguson Festus Glen Carbon Godfrey Highland Jennings Lake St. Louis Lemay CDP Manchester Overland Old Jamestown CDP St. Ann Shiloh Spanish Lake CDP Swansea Town and Country Troy (Illinois) Troy (Missouri) Union Washington Waterloo Wood River
Missouri counties	Franklin Jefferson Lincoln St. Charles St. Francois St. Louis City St. Louis County Warren Washington
Illinois counties	Bond Calhoun Clinton Jersey Macoupin Madison Monroe St. Clair
Subregions	Metro East Westplex

v t e Municipalities and communities of Jefferson County, Missouri, United States
County seat: Hillsboro
Cities	Arnold Byrnes Mill Crystal City De Soto Festus Herculaneum Hillsboro Kimmswick Olympian Village Pevely
Villages	Cedar Hill Lakes Lake Tekakwitha Parkdale Peaceful Village Scotsdale
Townships	Arnold Big River Central High Ridge Imperial Joachim Meramec Plattin River View Rock Valle Windsor
CDPs	Barnhart Briarwood Estates Cedar Hill High Ridge Horine Imperial LaBarque Creek Murphy Raintree Plantation Summer Set
Other communities	Antonia Bailey Belews Creek Bushburg Byrnesville Danby Dittmer Donnell Fletcher Flucom Frumet Goldman Grubville Hematite House Springs Jarvis Knorpp Liguori Local Ludwig Mapaville Melzo Meramec Heights Morse Mill Munsons Oermann Old Mines Papin Plattin Regina Riverside Rush Tower Seckman Selma Sulphur Springs Valles Mines Victoria Vineland Ware
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Largest cities	Kansas City St. Louis Springfield Columbia Independence Lee's Summit O'Fallon St. Charles St. Joseph Blue Springs St. Peters Joplin Florissant Chesterfield Wentzville Jefferson City Cape Girardeau Wildwood University City Liberty Ballwin Kirkwood Raytown Maryland Heights Gladstone Belton Grandview Nixa Raymore
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38°16′N 90°32′W / 38.26°N 90.54°W / 38.26; -90.54

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