Sea Isle City is a city in Cape May County, New Jersey, United States. It is part of the Ocean City Metropolitan Statistical Area. As of the 2010 United States Census, the city’s population was 2,114, reflecting a decline of 721 (-25.4%) from the 2,835 counted in the 2000 Census, which had in turn increased by 143 (+5.3%) from the 2,692 counted in the 1990 Census. Visitors raise the population to as much as 40,000 during the peak summer season from Memorial Day to Labor Day. Sea Isle City is located on Ludlam Island, which also contains the Strathmere section of Upper Township.
According to the United States Census Bureau, the city had a total area of 2.531 square miles (6.557 km), including 2.169 square miles (5.618 km) of land and 0.362 square miles (0.938 km) of water (14.31%).
Sea Isle City is a beach town with most of its housing used for vacation rentals and second homes. It has a 1.5-mile (2.4 km) beachfront promenade starting at 29th Street and ending on 57th street and several arcades, shops, restaurants and bars in the center of town. The epicenter of the town is 48th Street.
Sea Isle is not an “island city” as it shares its land on Ludlam Island with Strathmere, which is part of Upper Township. Neighboring Ocean City, however, is an island city as it include’s the entire island.
Unincorporated communities, localities and place names located partially or completely within the city include Ludlam Beach and Townsends Inlet (located at the south end of Ludlam Island).
Sea Isle City borders Avalon Borough, Dennis Township, Middle Township and Upper Township, along with the Atlantic Ocean.
As of the 2010 United States Census, there were 2,114 people, 1,041 households, and 646.461 families residing in the city. The population density was 974.5 per square mile (376.3/km). There were 6,900 housing units at an average density of 3,180.8 per square mile (1,228.1/km). The racial makeup of the city was 98.63% (2,085) White, 0.09% (2) Black or African American, 0.24% (5) Native American, 0.19% (4) Asian, 0.00% (0) Pacific Islander, 0.47% (10) from other races, and 0.38% (8) from two or more races. Hispanic or Latino of any race were 2.41% (51) of the population.
There were 1,041 households out of which 9.8% had children under the age of 18 living with them, 50.0% were married couples living together, 8.0% had a female householder with no husband present, and 37.9% were non-families. 34.1% of all households were made up of individuals, and 16.9% had someone living alone who was 65 years of age or older. The average household size was 2.03 and the average family size was 2.54.
In the city, the population was spread out with 10.7% under the age of 18, 6.1% from 18 to 24, 13.2% from 25 to 44, 37.6% from 45 to 64, and 32.3% who were 65 years of age or older. The median age was 58.1 years. For every 100 females there were 97.9 males. For every 100 females ages 18 and older there were 97.4 males.
The Census Bureau’s 2006-2010 American Community Survey showed that (in 2010 inflation-adjusted dollars) median household income was $54,715 (with a margin of error of +/- $9,859) and the median family income was $80,219 (+/- $21,265). Males had a median income of $66,771 (+/- $34,710) versus $44,087 (+/- $6,534) for females. The per capita income for the borough was $47,174 (+/- $10,684). About 3.1% of families and 7.4% of the population were below the poverty line, including none of those under age 18 and 3.9% of those age 65 or over.
As of the 2000 United States Census there were 2,835 people, 1,370 households, and 794 families residing in the city. The population density was 1,287.3 people per square mile (497.5/km). There were 6,622 housing units at an average density of 1, 162.2/km (3,006.9/sq mi). The racial makeup of the city was 97.88% White, 0.28% African American, 0.39% Native American, 0.35% Asian, 0.04% Pacific Islander, 0.07% from other races, and 0.99% from two or more races. Hispanic or Latino of any race were 1.06% of the population.
As of the 2000 Census, 30.5% of Sea Isle City residents were of Irish ancestry, the 34th-highest percentage of any municipality in the United States, and sixth-highest in New Jersey, among all places with more than 1,000 residents identifying their ancestry.
There were 1,370 households out of which 15.5% had children under the age of 18 living with them, 48.2% were married couples living together, 6.9% had a female householder with no husband present, and 42.0% were non-families. 37.4% of all households were made up of individuals and 18.5% had someone living alone who was 65 years of age or older. The average household size was 2.07 and the average family size was 2.71.
In the city, the population was spread out with 15.7% under the age of 18, 5.1% from 18 to 24, 20.8% from 25 to 44, 31.4% from 45 to 64, and 27.1% who were 65 years of age or older. The median age was 51 years. For every 100 females, there were 91.4 males. For every 100 females age 18 and over, there were 89.6 males.
The median income for a household in the city was $45,708, and the median income for a family was $62,847. Males had a median income of $42,713 versus $31,375 for females. The per capita income for the city was $28,754. About 6.4% of families and 7.6% of the population were below the poverty line, including 13.7% of those under age 18 and 10.2% of those age 65 or over.
Sea Isle City New Jersey neighborhoods include: 42nd – 49th, Landis Ave, Ocean’s Edge, SIC 40th Street