Area Code Lookup
What Area Code Is Leonia?
2 area codes serve Leonia · New Jersey
Leonia is served by area codes 201, 551. It is located in New Jersey.
Area Codes Serving Leonia
Frequently Asked Questions
What area code is Leonia?
Leonia is served by area codes 201, 551. It is located in New Jersey.
Why does Leonia have multiple area codes?
As demand for phone numbers increased, NANPA added area codes through splits (dividing the region) or overlays (layering a new code over the same geography). Leonia now has 2 area codes — 201 and 551 — covering the same or overlapping areas.
How do I call Leonia from outside the US?
To call Leonia from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-201-XXX-XXXX). The +1 is the country code for all NANPA countries.