00501 is the ZIP Code for The Internal Revenue Service in Holtsville, New York. 00501 is entirely within Suffolk County. Regionally, 00501 is located in Metro New York City.
| ZIP Code Name | Holtsville |
| Organization | The Internal Revenue Service |
| Primary County | Suffolk County |
| ZIP Code Type | Unique |
| Current Time | EST |
| Coordinates | 40.81679916,-73.04507446 |
| Adjacent ZIP Codes | |
| Region | Metro New York City |
| Metropolitan/Micropolitan Stat Area | New York-Newark-Jersey City, NY-NJ-PA |
| Time Zone | Eastern Standard Time |
| IANA Timezone | America/New_York |
| School Districts in 00501 | |
| Elementary Schools in 00501 | |
| High Schools in 00501 |