Area Code Lookup
What Area Code Is Dunlap?
2 area codes serve Dunlap
Dunlap is served by area codes 309, 559. It spans Illinois and California.
Area Codes Serving Dunlap
Frequently Asked Questions
What area code is Dunlap?
Dunlap is served by area codes 309, 559.
Why does Dunlap 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). Dunlap now has 2 area codes — 309 and 559 — covering the same or overlapping areas.
How do I call Dunlap from outside the US?
To call Dunlap from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-309-XXX-XXXX). The +1 is the country code for all NANPA countries.