Reynolds County is a county located in the Ozark Foothills Region in the Lead Belt of Missouri. As of the 2010 census, the population was 6,696. Its county seat is Centerville. The county was officially organized on February 25, 1845, and was named in honor of former Governor of Missouri Thomas Reynolds.
According to the U.S. Census Bureau, the county has a total area of 814 square miles (2,110 km), of which 808 square miles (2,090 km) is land and 5.9 square miles (15 km) (0.7%) is water.
As of the census of 2000, there were 6,689 people, 2,721 households, and 1,915 families residing in the county. The population density was 8 people per square mile (3/km²). There were 3,759 housing units at an average density of 5 per square mile (2/km²). The racial makeup of the county was 95.65% White, 0.52% Black or African American, 1.29% Native American, 0.19% Asian, 0.21% from other races, and 2.14% from two or more races. Approximately 0.82% of the population were Hispanic or Latino of any race. Among the major first ancestries reported in Reynolds County were 37.6% American, 12.1% Irish, 11.6% German, and 11.4% English.
There were 2,721 households out of which 27.80% had children under the age of 18 living with them, 59.20% were married couples living together, 7.80% had a female householder with no husband present, and 29.60% were non-families. 26.00% of all households were made up of individuals and 11.10% had someone living alone who was 65 years of age or older. The average household size was 2.40 and the average family size was 2.85.
In the county, the population was spread out with 24.00% under the age of 18, 6.80% from 18 to 24, 25.00% from 25 to 44, 27.90% from 45 to 64, and 16.20% who were 65 years of age or older. The median age was 41 years. For every 100 females there were 101.60 males. For every 100 females age 18 and over, there were 98.60 males.
The median income for a household in the county was $31,546, and the median income for a family was $37,891. Males had a median income of $26,753 versus $18,322 for females. The per capita income for the county was $15,847. About 16.10% of families and 20.10% of the population were below the poverty line, including 25.90% of those under age 18 and 15.50% of those age 65 or over.
According to the Association of Religion Data Archives County Membership Report (2000), Reynolds County is a part of the Bible Belt with evangelical Protestantism being the majority religion. The most predominant denominations among residents in Reynolds County who adhere to a religion are Southern Baptists (78.80%), Baptist Missionary Association of America (8.24%), and Methodists (4.24%).