- Margate City is a small city located in Atlantic County, New Jersey, United States. It is situated on Absecon Island, along the Jersey Shore. The city has a population of approximately 6,000 residents. Margate City is known for its sandy beaches, oceanfront homes, and beachside resorts. It is a popular summer destination for tourists and offers various recreational activities such as swimming, boating, and fishing. The city also has a charming downtown area with shops, restaurants, and entertainment options. Margate City is often considered a family-friendly community with a tight-knit community atmosphere.