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US area code · Florida

Area code 321

Where the 321 area code is, its overlay and how to dial a +1 321 number from anywhere.

CoversAltamonte Springs, FloridaTime zoneEastern (ET)TypeGeographic
Quick answer

The 321 area code is in Altamonte Springs, Florida, United States (Eastern (ET)). To call from abroad: +1 321 555-0123.

StateFlorida
Main areaAltamonte Springs
Time zoneEastern (ET)
TypeGeographic
10-digit dialingRequired
In service since10-Feb-1999

The 321 area code is a geographic North American Numbering Plan (NANP) code covering Altamonte Springs, Florida. It has been in service since 10-Feb-1999 and sits in the Eastern (ET) time zone.

How to dial a 321 number

From abroad+1 321 555-0123
Within the US / Canada1 321 555-0123
Locally (same area)321 555-0123

Cities in the 321 area code

A 321 number is usually in one of these places in Florida — 6 counties.

Altamonte Springs SeminoleCasselberry SeminoleKissimmee Osceola;PolkMerritt Island BrevardOak RidgeOcoee OrangeOrlando Brevard;OrangeOviedo SeminolePalm Bay BrevardPine HillsRockledge BrevardSaint Cloud OsceolaSanford SeminoleSouth ApopkaTitusville BrevardUniversity ParkWekiwa SpringsWest MelbourneWinter Park OrangeWinter Springs Seminole

Other Florida area codes

239305324352386407448561645656689727728754772786

Frequently asked questions

Where is the 321 area code?

The 321 area code is in Altamonte Springs, Florida, United States (Eastern (ET)).

Do I have to dial 10 digits for 321?

Yes — dial the area code plus the seven-digit number.

How do I call a 321 number from another country?

Dial your exit code (or +), then 1, then 321, then the number: +1 321 555-0123.

Source: NANPA numbering plan. An area code covers a region, not a precise address — a 321 number does not pinpoint a street or ZIP code.

Missed a call from +1 321?

In the 30 days to September 24, 2026, 1,811 unwanted calls showing a 321 number were reported to the US Federal Trade Commission, 84% of them recorded messages or robocalls. That puts 321 at #9 of 670 area codes reported.

Reducing your debt (credit cards, mortgage, student loans)569
Other563
Calls pretending to be government, businesses, or family and friends139
Medical & prescriptions56
Before you call back
  • If you do not know anyone in Florida, do not call back: a genuine caller will leave a message or send a text.
  • Scammers fake the number shown on caller ID, so a 321 number can hide a caller anywhere in the world.
  • Never give a code received by text or a bank detail to an unknown caller. In the US, calls can be reported at reportfraud.ftc.gov.

Who issues +1 321 numbers

Phone companies hold blocks of numbers in each area code. The main holders in 321:

Bellsouth Telecomm Inc Dba Southern Bell Tel & Tel 70Omnipoint Miami E License, LLC 59New Cingular Wireless PCS, LLC 52Paetec Itel, LLC 46Onvoy, LLC 39Metropcs Networks, LLC 39

About 15.1% of the 515 prefixes in use belong to mobile carriers: a 321 number is often a cell phone, and it may have moved to another carrier since.

Sources: FTC Do Not Call reported calls (numbers as reported by consumers, not verified), NANPA central office code assignments.

All US area codes United States +1 Map of area code 321 — cities & rate centres