 About 5.0% of families and 5.6% of the population were below the poverty line, including 7.7% of those under age 18 and none of those age 65 or over.As of the 2000 United States Census there were 4,173 people, 1,527 households, and 1,238 families residing in the borough.The population density was 3,463.1 people per square mile (1,342.7/km2).