516
Covers Nassau County, New York
In service since 1951
Overlay with 363
City facts
Hempstead area codes
Area codes for Nassau County, New York: history, overlays and how to dial.
516363
Hempstead uses area codes 516 and 363. Because more than one area code serves the same area, local calls need all ten digits.
About these area codes
363
Covers Nassau County, New York
In service since 1951
Overlay with 516
How to call a number in Hempstead
Inside the US
1 (516) 555-0123Dial 1, the area code, then the seven-digit number.Local call
(516) 555-0123Overlay area: always include the area code.From outside the US
+1 516 555 0123Use your country's exit code or +, then 1 for the US.Hempstead is on Eastern Time (ET); check the time before calling from another zone.
Other cities that share these codes
Nearby area codes
| Area code | Used in | Distance |
|---|---|---|
| 631 | Islip | 20 mi |
| 934 | Islip | 20 mi |
| 201 | Jersey City | 23 mi |
| 551 | Jersey City | 23 mi |
| 914 | Yonkers | 25 mi |
| 718 | Staten Island | 28 mi |
| 347 | Staten Island | 28 mi |
| 929 | Staten Island | 28 mi |
Hempstead quick facts
Hempstead was first settled in 1644.
First settled1644
CountyNassau CountyNew York
Area codes516, 363Population58,569Census ACS estimateZIP codes111550Time zoneEastern TimeET
Dates, namesake and elevation from Wikipedia: Hempstead, New York and Wikidata (checked 2026-11-08); population and ZIP codes from the U.S. Census Bureau.
Questions
What area code is Hempstead?
Hempstead uses area codes 516 and 363. Because more than one area code serves the same area, local calls need all ten digits.
When did area code 516 start?
Area code 516 dates from 1951.
When did area code 363 start?
Area code 363 dates from 1951.
Do I need to dial the area code for local calls in Hempstead?
Yes. 516 and 363 share the same area as an overlay, so every local call needs the area code plus the seven-digit number (ten digits).
What time zone is area code 516 in?
Hempstead is on Eastern Time (ET).
What other cities use area code 516?
Other cities in this network that share 516 and 363 include Oyster Bay, North Hempstead.
Sources: Area codes 516 and 363, Area codes 516 and 363 (Wikipedia) and Wikidata, checked 2026-11-08. Numbering plans change; the North American Numbering Plan Administrator is the official record.