Area codes in Casa Grande, Arizona

Casa Grande, Arizona uses area code 520. The main Casa Grande area code is 520.

Area codes serving Casa Grande

Phone numbers in Casa Grande are written as ten digits — for example (520) 555-0190 — and fall in the Mountain Time (Arizona, no DST) zone.

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Nearby cities

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Frequently asked questions

What is the area code for Casa Grande?

The main area code for Casa Grande, Arizona is 520.

How many area codes does Casa Grande have?

Casa Grande has 1 area code: 520.

How do you dial a Casa Grande number?

Dial all 10 digits — the area code (520) followed by the 7-digit local number. From abroad, dial +1, then the area code and number.

Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.