Area Code 520 — Phoenix, Arizona

NANP area code

520

UTC−7

State
Arizona
Primary city
Phoenix
Time zone
Mountain (no DST)
In service
1995

The code reaches 71 communities and 8 counties across Arizona.

Was this call legitimate?

The area code itself carries no risk signal. 520 is assigned to Phoenix, Arizona, so a call from it is consistent with a real caller in that area — but the digits alone prove nothing, because they can be forged.

Caller ID is set by whoever places the call, not verified by the network. That is why neighbour spoofing works: an operation anywhere in the world can display a number that matches the area code — and often the first three digits after it — of the person being called, so the call looks local. Every community in the 520 territory is a plausible-looking origin for a forged 520 number, which is why one can be made to look like a neighbour to so many people.

If you did not recognise the call: let it go to voicemail — a legitimate caller with real business will leave one. Do not return the call using the number shown; look the organisation up independently and call the number you found. Never confirm personal details, card numbers, or one-time codes to someone who called you, however plausible the number looked.

Codes.zone publishes no complaint counts, risk scores, or caller identities. We hold no data on individual numbers and will not estimate what we cannot source.

Local time and when to call back

Time there now

Mountain (no DST) · UTC−7

Reasonable callback window

8:00 AM – 9:00 PM

local time in Mountain (no DST)

Federal rules bar telemarketing calls to a residence outside 8:00 AM–9:00 PM in the called party's own time zone. It is a sensible bound for a personal callback too — and a caller who rang you well outside it was not observing it.

Overlay codes

520 is the only area code serving its territory — it has no overlay in the current numbering plan for Arizona. Where a region has no overlay, a number's area code still corresponds to a single geographic area.

Cities served

largest 20 by ZIP count
Communities served by area code 520, ranked by how many ZIP codes each holds.
CityZIP codesCounty
Phoenix77Maricopa County
Tucson54Pima County
Scottsdale15Maricopa County
Chandler8Maricopa County
Prescott6Yavapai County
Apache Junction4Pinal County
Casa Grande4Pinal County
Sierra Vista4Cochise County
Douglas3Cochise County
Nogales3Santa Cruz County
San Tan Valley3Pinal County
Fort Huachuca2Cochise County
Green Valley2Pima County
Marana2Pima County
Maricopa2Pinal County
Willcox2Cochise County
Ajo1Pima County
Amado1Santa Cruz County
Arivaca1Pima County
Arizona City1Pinal County

51 further communities not listed. All Arizona area codes →

Each point is a community served by 520, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.
  • Reference points and footprint
  • Not an official NANPA boundary
  • Not a USPS delivery area

Scope every community matched to 520. Source geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot), GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . Coordinates are place reference points, not boundaries.

Counties

Prefixes inside 520

We do not publish the NXX prefixes inside 520. The assignment of prefixes to rate centres comes from LERG routing data, which is proprietary, and we will not estimate it from postal data — ZIP codes and telephone prefixes do not map onto each other. Awaiting a clean-rights NPA-NXX source.