Holtsville Long Island
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#of Business: 16
Zip Code(s):11742, 00501, 00544
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Holtsville is a hamlet and census-designated place which is shared by the Towns of Islip and Brookhaven. The community is served by the Sachem School District.
Holtsville was named after Joseph Holt, a local postmaster general.
According to the 2010 census,...