According to the United States Census Bureau, the borough has a total area of , of which, of it is land and of it is water. Its average elevation is above sea level .
There were 8,193 households out of which 27.3% had children under the age of 18 living with them, 56.7% were married couples living together, 10.5% had a female householder with no husband present, and 29.5% were non-families. 26.4% of all households were made up of individuals and 13.7% had someone living alone who was 65 years of age or older. The average household size was 2.41 and the average family size was 2.92.
In the borough the population was spread out with 21.1% under the age of 18, 6.4% from 18 to 24, 26.7% from 25 to 44, 24.9% from 45 to 64, and 21.0% who were 65 years of age or older. The median age was 43 years. For every 100 females there were 90.1 males. For every 100 females age 18 and over, there were 86.5 males.
The median income for a household in the borough was $40,752, and the median income for a family was $48,503. Males had a median income of $39,086 versus $28,458 for females. The per capita income for the borough was $19,918. About 3.9% of families and 5.3% of the population were below the poverty line, including 7.4% of those under age 18 and 3.8% of those age 65 or over.