State
Area Code 520
Tucson, Sierra Vista, Casa Grande, Arizona
Local time now
…
Time zone
Mountain (no daylight saving)
Main cities
Tucson, Sierra Vista, Casa Grande, Nogales, Willcox, Benson
Overlays
None
In service since
1995
When you can make sales calls to 520 numbers
| Every day | 8 AM – 9 PM (federal rule) |
In the called person's local time. Guidance, not legal advice.
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Other area codes in Arizona
Questions about area code 520
- Where is area code 520?
- Area code 520 is in Arizona, covering Tucson, Sierra Vista, Casa Grande, Nogales.
- What time zone is area code 520?
- Mountain (no daylight saving) time.
- When can telemarketers call a 520 number?
- Federal rules allow sales calls from 8 AM to 9 PM local time.
- Is 520 a toll-free number?
- No. 520 is a regular area code for Arizona. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.