Holtsville, New York
Hamlet and census-designated place in New York, United States / From Wikipedia, the free encyclopedia
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Holtsville is a hamlet and census-designated place (CDP) in Suffolk County, on Long Island, in New York, United States. The population was 19,714 at the 2010 census.[2]
Quick Facts Country, State ...
Holtsville, New York | |
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Coordinates: 40°48′48″N 73°2′50″W | |
Country | United States |
State | New York |
County | Suffolk |
Towns | Brookhaven Islip |
Area | |
• Total | 7.11 sq mi (18.41 km2) |
• Land | 7.11 sq mi (18.41 km2) |
• Water | 0.00 sq mi (0.00 km2) |
Elevation | 105 ft (32 m) |
Population (2020) | |
• Total | 18,937 |
• Density | 2,663.81/sq mi (1,028.53/km2) |
Time zone | UTC−05:00 (Eastern Time Zone) |
• Summer (DST) | UTC−04:00 |
ZIP Codes | 00501, 00544, 11742 |
Area code(s) | 631, 934 |
FIPS code | 36-35254 |
GNIS feature ID | 0953030 |
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The hamlet is mainly in the Town of Brookhaven, while the southwestern portion is in the Town of Islip. An IRS Processing Center is located in Holtsville, along with NYPA's Richard M. Flynn Power Plant.