Danville is an unincorporated community and census-designated place in Montgomery County, in the U.S. state of Missouri. As of the 2020 census, it had a population of 28. Danville was laid out in 1834 and named after Danville, Virginia, the native home of an early settler. A post office at Danville was established in 1834, and remained in operation until 19…Danville is an unincorporated community and census-designated place in Montgomery County, in the U.S. state of Missouri. As of the 2020 census, it had a population of 28. Danville was laid out in 1834 and named after Danville, Virginia, the native home of an early settler. A post office at Danville was established in 1834, and remained in operation until 1942. A census-designated place named after the village, and including it, was established in or after 1980, and census-based demographics since that establishment reflect the entire CDP and not just the village proper.