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Deer Park is a suburban hamlet located in the town of Babylon, Suffolk County, on Long Island, New York. As of 2025, it has an estimated population of approximately 27,000 residents. Situated near the geographic center of Long Island, Deer Park is bordered by North Babylon to the west, Wyandanch to the north, Baywood to the east, and the Long Island Expressway to the south. The area is largely residential with a mix of single-family homes, local businesses, and shopping centers like the Tanger Outlets. Deer Park features gently rolling terrain and is surrounded by pockets of wooded areas and small parks. The climate is classified as humid subtropical, with warm summers averaging highs around 84°F and cold winters with lows near 26°F. Annual precipitation is roughly 44 inches, consistent with other parts of Long Island.

Demographically, Deer Park is a diverse and growing community. The population consists of approximately 50% White, 20% Hispanic or Latino, 15% Black or African American, and 10% Asian residents, with the remaining population identifying as multiracial or from other backgrounds. The median age is around 40 years old, reflecting a blend of families, young professionals, and retirees. The median household income is estimated at about $95,000, with a strong middle-class presence and relatively low poverty rates compared to urban centers. The housing stock primarily consists of owner-occupied single-family homes, and the community values its suburban character, school districts, and proximity to major highways and public transportation. Deer Park’s household types range from traditional family units to an increasing number of single-person and multigenerational households, contributing to a stable yet evolving suburban environment.