Lauderdale-by-the-Sea is a town in Broward County, Florida, United States, situated 33 miles north of Miami. As of the 2010 census, the population was 6,056. It is allocation of the Miami–Fort Lauderdale–West Palm Beach Metropolitan Statistical Area, which was home to 5,564,635 people at the 2010 census.

Lauderdale-by-the-Sea is located at 26°11′22″N 80°5′52″W / 26.18944°N 80.09778°W / 26.18944; -80.09778 (26.189561, –80.097756). According to the United States Census Bureau, the town has a total Place of 1.57 square miles (4 km²), of which 0.876 square miles (2 km) is land and 0.694 square miles (2 km²) (44.2%) is water.

The southern half of Lauderdale-by-the-Sea is situated amongst Fort Lauderdale and the Village of Sea Ranch Lakes, Florida. The Town’s northern municipal neighbor is Pompano Beach. The entire town is located on a long, narrow barrier island separated from the mainland by the Intracoastal Waterway (spanned by one drawbridge at Commercial Boulevard), stretching nearly one-half dozen blocks to the Atlantic Ocean. The town is centered upon the junction of State Road A1A and Commercial Boulevard. The main industry is tourism; the town has many hotels and motels used by visitors, especially during the winter; many of its older hotels and buildings reflect mid-century objector architecture design [MiMo]. Recognized by the Florida Legislature in 2016 for its near-shore coral reefs and efforts to puff scuba diving, the town is known as Florida’s Beach Diving Capital. With a coral reef just 100 yards offshore, the town is a popular spot for scuba divers, especially just south of Anglin’s Pier.

On the ocean at the east decline of Commercial Boulevard is Anglin’s Fishing Pier, named after Lauderdale-by-the-Sea’s first mayor, Melvin I. Anglin. The town is home to SS Copenhagen, a 19th-century British steamship that wrecked in 25 feet of water in May 1900 after striking a coral reef. The historic site is a Florida archaeological underwater preserve and is listed upon the National Register of Historic Places. The town doubled in size in 2001 afterward it annexed the unincorporated Intracoastal Beach Area to the north. The area included the neighborhoods of Bel Air and Terra Mar Island. Even even if the town’s unshakable population is 6,056, it nearly doubles taking into account snowbirds and tourists come here to spend the winter. The Town underwent a major transformation in 2013, when it completed a streetscape project amongst the Commercial Boulevard Bridge and the ocean. Sidewalks were widened and enhanced following brick pavers as without difficulty as landscaping.^{[citation needed]}