Edgar Springs is a city in Phelps County, Missouri, United States. The population was 208 at the 2010 census. As of the 2000 census, Edgar Springs is the closest town to the mean center of U.S. population, the theoretical center of the United States based on population. The exact point lies about 2.8 miles east of the town at 37°41'49.15" North, 91°48'34.44" West.