Area code 516 serves Nassau County on Long Island, New York, one of the most affluent and densely populated suburban regions in the United States. Originally part of 914, then 516, and later split into 631 for Suffolk County, 516 has become synonymous with suburban prestige just east of New York City. The area includes communities such as Hempstead, Garden City, Long Beach, and Great Neck. Known for excellent public schools, a high standard of living, and proximity to both JFK Airport and Manhattan, 516 supports a thriving mix of professionals, families, and retirees. The local economy is driven by healthcare, education, finance, and technology. Institutions like Northwell Health and Hofstra University anchor the region’s employment landscape. A 516 number instantly conveys a Long Island presence, making it especially valuable for law firms, healthcare providers, real estate agencies, and any business looking to connect with a high-income, commuter-heavy customer base in the greater New York area.