Area Code Lookup
What Area Code Is Holly?
Area code 248 · Michigan
Holly uses area code 248. It is located in Michigan.
Area Code Serving Holly
Frequently Asked Questions
What area code is Holly?
Holly uses area code 248. It is located in Michigan.
How do I call Holly from outside the US?
To call Holly from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-248-XXX-XXXX). The +1 is the country code for all NANPA countries.