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 population was 2,114. 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 part of Dennis Township.
Sea Isle City is popular with summer visitors. As of 2001, the only amusement park, Fun City, was closed and the land was sold for development of beach homes. In 2009 Fun City re-opened at a new Location on JFK Boulevard. Sea Isle City's signature water tower always had "Welcome to Sea Isle City" painted on it until 2002 when the printed message was change to "Smile! You're in Sea Isle City". "Sara The Turtle Day" is the city's local holiday, celebrating a fictional turtle named Sara who became the city's unofficial mascot. The city also hosts an annual Polar Bear Plunge every February.
In 2011, Sea Isle City embarked on a $14 million makeover to create a public corridor from the bay to the ocean. Plans include building a new boathouse on the marina next to the Fun City amusement park, installing a new playground and basketball courts on JFK Boulevard and erecting a pavilion and band shell at Excursion Park on the city’s Promenade overlooking the Atlantic Ocean. Sea Isle City became one of the first towns in New Jersey, along with Salem City and Egg Harbor City, to receive LED streetlights powered solely by wind and solar energy. The lights were installed at the Promenade at JFK Boulevard by the South Jersey Economic Development District and the New Jersey Institute of Technology.