According to the United States Census Bureau, the city has a total area of 14.6 square miles (37.8 km²), of which, 13.4 square miles (34.6 km²) of it is land and 1.2 square miles (3.2 km²) of it (8.50%) is water.
There were 1,142 households out of which 11.6% had children under the age of 18 living with them, 56.7% were married couples living together, 4.6% had a female householder with no husband present, and 36.5% were non-families. 33.8% of all households were made up of individuals and 24.3% had someone living alone who was 65 years of age or older. The average household size was 1.95 and the average family size was 2.42.
In the city the population was spread out with 12.8% under the age of 18, 3.4% from 18 to 24, 13.5% from 25 to 44, 24.6% from 45 to 64, and 45.7% who were 65 years of age or older. The median age was 63 years. For every 100 females there were 86.9 males. For every 100 females age 18 and over, there were 84.2 males.
The median income for a household in the city was $26,714, and the median income for a family was $34,129. Males had a median income of $24,286 versus $17,688 for females. The per capita income for the city was $18,987. About 6.9% of families and 10.8% of the population were below the poverty line, including 26.7% of those under age 18 and 2.6% of those age 65 or over.