Russell Springs is a home rule-class city in Russell County, Kentucky, in the United States. The city is the gateway to Lake Cumberland, one …Russell Springs is a home rule-class city in Russell County, Kentucky, in the United States. The city is the gateway to Lake Cumberland, one of the largest man-made lakes in the region, created by Wolf Creek Dam. It is the largest city in the county, having a population of 2,441 during the year 2010 U.S. Census.