sentences:  About 4.0% of families and 4.6% of the population were below the poverty line, including 1.8% of those under age 18 and 9.0% of those age 65 or over.At the 2010 census there were 4,079 people, 1,551 households, and 1,217 families residing in the community.The population density was 440 people per square mile (170/km²).