Big Spring, Montgomery County, Missouri

Big Spring is an unincorporated community and census-designated place in Montgomery County, Missouri, United States. As of the 2020 census, it had a population of 149.

History
A post office called Big Spring was established in 1830 and remained in operation until 1906. The community was named for a big spring near the original town site.

Geography
Big Spring is in southern Montgomery County along Missouri Route 19, 8 mi south of Interstate 70 at New Florence and the same distance north of Hermann and the Missouri River. The community is in the valley of the Loutre River, a tributary of the Missouri.

According to the U.S. Census Bureau, the Big Spring CDP has a total area of 3.38 sqmi, of which 0.03 sqmi, or 0.74%, are water.