 About 11.9% of families and 18.6% of the population were below 7% of those younger than 18 and 15.8% of those age 65 or older.At the 2010 census there were 6,074 people in 2,409 households, including 1,538 families, in the city.The population density was 323.1 people per square mile (124.7/km²).