|Marion County, Arkansas|
Marion County courthouse in Yellville
Location in the U.S. state of Arkansas
Arkansas's location in the U.S.
|Founded||September 25, 1836|
|Named for||Francis Marion |
|Largest city||Bull Shoals|
|• Total||640 sq mi (1,658 km2)|
|• Land||597 sq mi (1,546 km2)|
|• Water||43 sq mi (111 km2), 6.8%|
|• ( 2016)||16,325|
|• Density||28/sq mi (11/km2)|
|Time zone||Central: UTC−6/ −5|
Marion County is located in the Ozark Mountains in the U.S. state of Arkansas. The county is named for Francis Marion, the famous "Swamp Fox" of the Revolutionary War. Created as Arkansas's 35th county in 1836, Marion County is home to one incorporated town and four incorporated cities, including Yellville, the county seat. The county is also the site of numerous unincorporated communities and ghost towns. The county included part of what is now Searcy County, Arkansas, with many opposing to dividing them, which helped fueled the bloody Tutt-Everett War between 1844 and 1850.
Occupying 640 square miles (170,000 ha), Marion County is the 33rd smallest county in Arkansas. As of the 2010 Census, the county's population is 16,653 people in 3,531 households.  Based on population, the county is the twenty-seventh smallest county of the 75 in Arkansas.  Located in the Ozarks, the county is largely covered with rugged terrain and waterways, with the exception of King's Prairie in the southwestern portion. It is drained by the White River, Buffalo River, Crooked Creek, and the Little North Fork of White River. Protected areas of the county include Bull Shoals-White River State Park, Ozark National Forest, the Buffalo National River and four wildlife management areas (WMAs).
Prior to white settlement, the Ozark Plateau was inhabited by the Osage Indians for centuries.  Present-day Arkansas was under French rule from 1682 until the Spanish took over in 1762. The territory was returned to France in 1800 and then sold to the United States as part of the Louisiana Purchase in 1803. In 1812, the Territory of Missouri was formed, containing all of the Louisiana Purchase except the modern state of Louisiana. To manage this expansive and sparsely populated territory, counties were formed. New Madrid County, Missouri covered much of southeastern Missouri and the northern part of Arkansas. This county was eventually subdivided into Lawrence County, which was later subdivided into Izard County. 
Marion County was formerly home to a large zinc mining industry. The ruins of the Rush Creek mining district are preserved as the Rush Historic District, which is listed on the National Register of Historic Places.
- Ozark County, Missouri (north)
- Baxter County (east)
- Searcy County (south)
- Boone County (west)
- Taney County, Missouri (northwest)
|U.S. Decennial Census
1790–1960  1900–1990 
1990–2000  2010–2016 
As of the 2000 census,  there were 16,140 people, 6,776 households, and 4,871 families residing in the county. The population density was 27 people per square mile (10/km²). There were 8,235 housing units at an average density of 14 per square mile (5/km²). The racial makeup of the county was 97.52% White, 0.12% Black or African American, 0.76% Native American, 0.20% Asian, 0.05% Pacific Islander, 0.13% from other races, and 1.22% from two or more races. 0.76% of the population were Hispanic or Latino of any race.
There were 6,776 households out of which 26.00% had children under the age of 18 living with them, 61.30% were married couples living together, 7.40% had a female householder with no husband present, and 28.10% were non-families. 24.90% of all households were made up of individuals and 12.40% had someone living alone who was 65 years of age or older. The average household size was 2.36 and the average family size was 2.79.
In the county, the population was spread out with 22.10% under the age of 18, 6.00% from 18 to 24, 23.30% from 25 to 44, 28.50% from 45 to 64, and 20.00% who were 65 years of age or older. The median age was 44 years. For every 100 females there were 97.90 males. For every 100 females age 18 and over, there were 94.80 males. The median income for a household in the county was $26,737, and the median income for a family was $32,181. Males had a median income of $22,877 versus $17,729 for females. The per capita income for the county was $14,588. About 11.50% of families and 15.20% of the population were below the poverty line, including 23.50% of those under age 18 and 14.40% of those age 65 or over.
The county government is a constitutional body granted specific powers by the Constitution of Arkansas and the Arkansas Code. The quorum court is the legislative branch of the county government and controls all spending and revenue collection. Representatives are called justices of the peace and are elected from county districts every even-numbered year. The number of districts in a county vary from nine to fifteen, and district boundaries are drawn by the county election commission. The Marion County Quorum Court has nine members. Presiding over quorum court meetings is the county judge, who serves as the chief operating officer of the county. The county judge is elected at-large and does not vote in quorum court business, although capable of vetoing quorum court decisions.  
Note: Unlike most Arkansas counties, Marion County only has one single township (named "Marion County"). That township encompasses the entire county.
Townships in Arkansas are the divisions of a county. Each township includes unincorporated areas; some may have incorporated cities or towns within part of their boundaries. Arkansas townships have limited purposes in modern times. However, the United States Census does list Arkansas population based on townships (sometimes referred to as "county subdivisions" or "minor civil divisions"). Townships are also of value for historical purposes in terms of genealogical research. Each town or city is within one or more townships in an Arkansas county based on census maps and publications. The townships of Marion County are listed below; listed in parentheses are the cities, towns, and/or census-designated places that are fully or partially inside the township.  
- Marion County
- List of lakes in Marion County, Arkansas
- National Register of Historic Places listings in Marion County, Arkansas
- Gannett, Henry (1905). The Origin of Certain Place Names in the United States. U.S. Government Printing Office. p. 200.
- "State & County QuickFacts". United States Census Bureau. Archived from the original on July 14, 2011. Retrieved May 23, 2014.
- "Find a County". National Association of Counties. Retrieved 2011-06-07.
- General Highway Map - Marion County, Arkansas (PDF) (Map) (2008-04-15 ed.). Arkansas State Highway and Transportation Department. Retrieved 2016-06-06.
- Berry, Earl, ed. (1977). History of Marion County. Yellville: Marion County Historical Association. p. 1. LCCN 77-73201. OCLC 53220751.
- History (1977), p. 1.
- "2010 Census Gazetteer Files". United States Census Bureau. August 22, 2012. Retrieved August 27, 2015.
- "Population and Housing Unit Estimates". Retrieved June 9, 2017.
- "U.S. Decennial Census". United States Census Bureau. Retrieved August 27, 2015.
- "Historical Census Browser". University of Virginia Library. Retrieved August 27, 2015.
- Forstall, Richard L., ed. (March 27, 1995). "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved August 27, 2015.
- "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). United States Census Bureau. April 2, 2001. Retrieved August 27, 2015.
- Based on 2000 census data
- "American FactFinder". United States Census Bureau. Retrieved 2011-05-14.
- Teske, Steven (March 24, 2014). "Quorum Courts". Encyclopedia of Arkansas History and Culture. Butler Center for Arkansas Studies at the Central Arkansas Library System. Retrieved January 23, 2016.
- Goss, Kay C. (August 28, 2015). "Office of County Judge". Encyclopedia of Arkansas History and Culture. Butler Center for Arkansas Studies at the Central Arkansas Library System. Retrieved January 23, 2016.
- "Dave Leip's Atlas of U.S. Presidential Elections". Retrieved November 18, 2016.
- 2011 Boundary and Annexation Survey (BAS): Marion County, AR (PDF) (Map). U. S. Census Bureau. Archived from the original (PDF) on 2012-10-19. Retrieved 2011-08-23.
- "Arkansas: 2010 Census Block Maps - County Subdivision". United States Census Bureau. Retrieved May 29, 2014.