Tilghman Island is an island located in the U.S. state of Maryland. It is within Talbot County in the Washington-Arlington-Alexandria Metro Area. It has a total area of 2.8 square miles at 38°42′32″N 76°20′6″W. The elevation is 7 feet above sea level. As of the 2000 census data, it had a total population of 854. The population density was 315.9/sq mi. It has Zip code 21671.