Area Code Lookup
What Area Code Is Gresham?
2 area codes serve Gresham · Oregon
Gresham is served by area codes 503, 971. It is located in Oregon.
Area Codes Serving Gresham
Frequently Asked Questions
What area code is Gresham?
Gresham is served by area codes 503, 971. It is located in Oregon.
Why does Gresham 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). Gresham now has 2 area codes — 503 and 971 — covering the same or overlapping areas.
How do I call Gresham from outside the US?
To call Gresham from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-503-XXX-XXXX). The +1 is the country code for all NANPA countries.