Southgate is a home rule-class city located in the U.S. state of Kentucky. It is within Campbell County named for the family of Richard Southgate. It has a total area of 1.4 square miles at 39°3′56″N 84°28′25″W. The elevation is 689 feet above sea level. As of the 2010 census data, it had a total population of 3,803. The population density was 2,439.1/sq mi. Estimated per capita income in 2016 was $27,787. Recent job growth is negatively decreased by 1.54 percent. The average travel time is 20 minutes. It has Zip code 41071.