305 Area Code

What 305 actually covers

305 is the area code of Miami-Dade County and the Florida Keys. On the mainland that means Miami, Miami Beach, Hialeah, Coral Gables, Homestead, Doral, Aventura, Kendall and the rest of the county down to the edge of the Everglades. Across the water it runs the length of Monroe County's island chain, from Key Largo to Key West, which is why a Key West hotel and a downtown Miami bank can share the same first three digits.

It does not reach Fort Lauderdale or Hollywood, which are 954 and 754 in Broward County, nor Boca Raton and West Palm Beach, which are 561. Those splits matter for judging callers: a "Fort Lauderdale" business calling from a 305 number is already a small mismatch.

Two overlays share the whole territory. 786 was added in 1998 and 645 in 2023, so any Miami-Dade or Keys address may have a number under any of the three, and all local calls are dialled with ten digits.

How 305 got here

• 1947: 305 was one of the original area codes and covered the entire state of Florida.
• 1953: the Tampa Bay side of the state moved to 813.
• 1965: the Panhandle and Jacksonville moved to 904.
• April 1988: Orlando and the Atlantic coast from Palm Beach north became 407. 305 was now South Florida.
• September 1995: Broward County split off as 954, leaving 305 with Miami-Dade and the Keys.
• March 1998: 786 went live as an overlay because cell phones and pagers were eating through the remaining 305 numbers. The Keys were folded into the 786 overlay in September 2001.
• August 2023: 645 was activated as the third code for the same area.

So a 305 number is the "original Miami" code in the same way 212 is Manhattan's, and older businesses and long-time residents tend to hold one. Newer lines, especially mobiles issued after the late 1990s, are more often 786, and since 2023 a growing share are 645.

What a real 305 caller usually looks like

• Landline on an established carrier is what you should expect from a hospital, a county office, a school, a hotel or a law firm. Miami-Dade's government and court lines, the big hospital systems and the port and airport all sit on 305 landlines.
• Mobile 305 numbers are common. Cell phones carried 305 for a decade before 786 took over most new assignments, so a mobile result on its own is neutral.
• VoIP results deserve a closer look. Miami has an unusually large number of call centres, travel sellers and small trading firms on VoIP lines, some entirely legitimate, but VoIP is also the line type behind nearly all spoofed calls.
• Ported is frequent here, both because the area has changed codes and because people move in and out of Miami with their numbers.

The line type does not identify the caller, but it tells you whether the caller's story fits. A sheriff's deputy, a utility or a federal agent does not phone you from a VoIP reseller.

Scams that use 305 caller IDs

South Florida sits near the top of national fraud complaint rankings every year, and the patterns below are the ones local and federal authorities have warned about most recently.

Police and sheriff impersonation, now with AI voices. In May 2025 the Miami-Dade Sheriff's Office reported a surge of calls and texts impersonating its officers, with caller ID faked to show real law enforcement numbers and, in some cases, synthetic voices. The script is a warrant, a missed court appearance or a "case" that can be settled by payment. The advice from investigators is to take the caller's name, hang up, and phone the agency back on a number you looked up yourself.

Jury duty threats. The Monroe County Sheriff's Office, covering the Keys, has taken repeated reports of callers claiming to be deputies who say the victim missed jury duty and must pay a fine by prepaid card or face arrest. No Florida court or sheriff collects fines by phone.

Federal agent impersonation. In April 2026 the FBI's Miami office warned of callers posing as federal agents, sometimes working alongside a fake "bank employee", who tell the target they are a suspect or a victim in a fraud case and must move money to "settlement" accounts to help the investigation. The FBI states that legitimate federal officials never request money or sensitive personal information by phone, online or by email.

Immigration and "ICE" calls. With one of the largest immigrant populations in the country, Miami is a prime target for calls, often in Spanish, from people claiming to be immigration officers. The caller says the victim has violated immigration law and can avoid arrest or deportation only by paying "fees" or "fines" immediately, frequently from a number spoofed to look like an official ICE line. Federal complaints about immigration scams roughly doubled in 2025. Government agencies do not demand payment by phone, and no fee paid to a caller can change a case.

Utility shut-off threats. Callers claiming to be from FPL say power will be cut within the hour unless a balance is paid by prepaid card or a payment app. The utility's own guidance is the same as every other's: it does not demand instant payment by those methods. Hang up and call the number printed on your bill.

Vacation, cruise and timeshare pitches. A Miami specialty. Recorded messages announce a free cruise, a resort stay or a timeshare exit deal that only needs a "port fee" or a deposit by card. Real cruise lines do not cold-call with free cabins.

Neighbour spoofing. Robocall operations display a 305 number with the same first six digits as yours. The number shown usually belongs to an unrelated resident, which is why some 305 numbers collect reports from people who were never actually called by them.

How to check a 305 number

1. Enter the ten-digit number in the panel at the top of this page. The 305 is already filled in.
2. Compare the line type and carrier with what the caller claimed. Sheriffs, courts, utilities and federal agencies call from established landlines, not VoIP resellers.
3. Read the risk level and community reports. Several "scam" or "robocall" reports within days of each other mark an active campaign.
4. Still unsure? Unlock the risk details for the fraud score and abuse history, or call the organisation back on the number printed on its official site or your bill.

Where to report a 305 scam call

• Florida Attorney General fraud hotline: 1-866-966-7226 (1-866-9-NO-SCAM), or the online complaint form at myfloridalegal.com.
• Florida Chief Financial Officer, Scam Stoppers: myfloridacfo.com/scam-stoppers lists scams reported by county, including Miami-Dade.
• FBI: ic3.gov for any scam where money or data changed hands, or 1-800-225-5324.
• Your local police non-emergency line if money was lost; ask for a report number for your bank.
• Federal Trade Commission: reportfraud.ftc.gov. Reports feed the complaint data carriers use to block robocallers.
• CallerTracer: report the number on the Who Called Me page or straight from a lookup result. It shows on this page and on every lookup of that number within minutes.

Frequently asked questions

Is 305 Miami or the Keys?

Both. 305 covers all of Miami-Dade County and the Florida Keys in Monroe County. The same territory also uses 786 and, since 2023, 645.

Are new 305 numbers still issued?

Yes, but most new lines come out as 786 or 645 because the 305 pool is close to full. An older business or long-time resident is more likely to hold a 305.

Does a 305 number mean the caller is in Miami?

Only that the number was issued there. Mobile and VoIP numbers travel, and a spoofed call can show any number at all. Use the carrier and line type from a lookup to judge where the call really came from.

What time zone is 305?

Eastern Time, with daylight saving from March to November. The clock at the top of this page shows the current time in Miami.

Which area codes are next to 305?

786 and 645 share the same area. 954 and 754 cover Broward County to the north, 561 covers Palm Beach County, and 239 covers the Gulf coast around Naples to the west.