Mount Sinai Union Free School District

Browse homes for sale within the Mount Sinai Union Free School District. Whether you're moving to be near a specific elementary school or you want your kids in this district's high school, every listing below is geographically located inside the district boundary — verified by official Census TIGER mapping data.

The DeVito Team has helped families navigate Long Island's school-district-driven housing market for years. Joseph DeVito is a licensed Associate Real Estate Broker and real estate attorney — contact us for pre-listing access and off-market opportunities in this district.

Active listings in Mount Sinai Union Free School District

Listings courtesy of OneKey® MLS as distributed by MLS GRID.

Based on information submitted to the MLS GRID as of October 10, 2026 9:15 pm. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.

Personal-use terms and which listings this site shows: MLS & Data Disclosures

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Neighborhoods in this school district

Each section below is mapped to Mount Sinai Union Free School District based on its geographic location within the district boundary.

Buying a home in Mount Sinai Union Free School District?

Talk to Joseph DeVito — Agent & Real Estate Attorney with deep experience in this district and surrounding areas. We help families match schools to lifestyle to long-term resale value.