Holtsville, NY Area Codes
Holtsville is served by area codes 631 and 934. It is in New York, Suffolk County. About 13,202 people live in its 3 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 631, 934 |
| State / province | New York |
| County | Suffolk County |
| Population | 13,202 |
| ZIP codes | 3 |
| Time zone | Eastern |
| Coordinates | 40.8137, -73.0440 |
What area code is Holtsville in?
ZIP codes in the code footprint
Nearby towns and their area codes
Farmingville 516, 631, 934Holbrook 631, 934Medford 631, 934Ronkonkoma 631, 934Selden 516, 631, 934Centereach 516, 631, 934Patchogue 631, 934Lake Grove 631, 934
How to dial
Dial 631 + 7 digits for a number in Holtsville, or +1 631 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.