Area Code Lookup
What Area Code Is Ottawa?
6 area codes serve Ottawa
Ottawa is served by area codes 343, 567, 613, 753, 785, 815. It spans Ontario and Ohio and Kansas and Illinois.
Area Codes Serving Ottawa
Frequently Asked Questions
What area code is Ottawa?
Ottawa is served by area codes 343, 567, 613, 753, 785, 815.
Why does Ottawa 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). Ottawa now has 6 area codes — 343 and 567 and 613 and 753 and 785 and 815 — covering the same or overlapping areas.
How do I call Ottawa from outside the US?
To call Ottawa from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-343-XXX-XXXX). The +1 is the country code for all NANPA countries.