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.
The county is home to Johnson's Shut-Ins State Park, a popular tourist attraction in the state of Missouri.
Reynolds County was officially organized on February 25, 1845. It is still an area of rugged beauty near the geologic center of the Ozark Highland. Reynolds County was formerly part of Ripley County which was formed in 1831 and part of Wayne County which was formed in 1818. It was also previously part of Washington County and part of Ste. Genevieve County.
The Reynolds County Courthouse has burned twice. The first time was in December 1863 when the Confederate army burned it. A new courthouse was built in the fall of 1867 on the same foundation as the previous one. This courthouse was burned in late November 1871. Both times all records were destroyed. Temporary quarters again burned May 27, 1872, while a new "fireproof" courthouse was being built.