Lancaster is a city located in the U.S. state of Kentucky. It is within and the county seat of Garrard County. It has a total area of 1.9 square miles at 37°37′7″N 84°34′46″W. The elevation is 1,027 feet above sea level. As of the 2010 census data, it had a total population of 3,442. The population density was 1,774/sq mi. Estimated per capita income in 2016 was $23,330. Recent job growth is positively increased by 0.18 percent. The average travel time is 29 minutes. It has Zip codes 40444 and 40446.