11815 is the ZIP Code for The Long Island Power Authority in Hicksville, New York. Portions of 11815 are also in Oyster Bay (town). 11815 is entirely within Nassau County. Regionally, 11815 is located in Metro New York City.
| ZIP Code Name | Hicksville |
| Organization | The Long Island Power Authority |
| Primary County | Nassau County |
| ZIP Code Type | Unique |
| Area Code(s) | 363 / 516 |
| Current Time | EST |
| Coordinates | 40.76698303,-73.50962067 |
| Adjacent ZIP Codes | |
| Cities/Towns in 11815 | |
| 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 |
| Area | 0.04954936 Square Miles |
| School Districts in 11815 | |
| Elementary Schools in 11815 | |
| Middle Schools in 11815 | |
| High Schools in 11815 |