Area Code Lookup
What Area Code Is Hermiston?
2 area codes serve Hermiston · Oregon
Hermiston is served by area codes 458, 541. It is located in Oregon.
Area Codes Serving Hermiston
Frequently Asked Questions
What area code is Hermiston?
Hermiston is served by area codes 458, 541. It is located in Oregon.
Why does Hermiston 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). Hermiston now has 2 area codes — 458 and 541 — covering the same or overlapping areas.
How do I call Hermiston from outside the US?
To call Hermiston from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-458-XXX-XXXX). The +1 is the country code for all NANPA countries.