The 305 area code is the original phone code for Miami and the Florida Keys, one of the most iconic area codes in the country. In service since 1947, it covers Miami-Dade County and Monroe County today alongside the 786 and 645 overlays. If a 305 number has appeared on your caller ID, this guide explains where it comes from, how to dial it, and how to stay safe from spoofed calls.
Quick Summary: Area Code 305 at a Glance
| Detail | Information |
|---|---|
| Area Code | 305 |
| State | Florida (FL) |
| Major Cities | Miami, Hialeah, Miami Beach, Key West |
| Time Zone | Eastern Time (ET) |
| Country Code | +1 (USA) |
| Overlay Codes | 786, 645 (co-located) |
Geographic Coverage & Major Cities
Area code 305 covers Miami-Dade County and Monroe County (the Florida Keys) at the southern tip of Florida. As the founding code of South Florida, it is deeply tied to the identity of Miami and the Keys.
- Miami & Miami Beach – the international city and its world-famous beaches
- Hialeah & Coral Gables – major Miami-Dade cities
- Homestead & Kendall – southern Miami-Dade communities
- Key West & Key Largo – the Florida Keys along US-1
As the original South Florida code, a 305 number is prized as a mark of authentic, long-established Miami identity for residents and businesses alike.
A Brief History of Area Code 305
Area code 305 was one of the original area codes established in 1947 and once covered most of the Florida peninsula. Over the decades it shrank as new codes were added, including 954 for Broward County in 1995. The 786 overlay was added over Miami-Dade and the Keys in 1998, and a second overlay, 645, followed in 2024, keeping the region on mandatory 10-digit dialing.
Time Zone & Best Time to Call
Numbers in the 305 area code use Eastern Time (ET). The region observes Daylight Saving Time, shifting from EST (UTC-5) to EDT (UTC-4) between March and November each year.
How to Dial Phone Numbers in Area Code 305
Because 305 shares its region under an overlay, the area requires 10-digit dialing on every call.
Calling within the United States or Canada
- 10-digit dialing: Include the area code – 305-XXX-XXXX.
- 11-digit dialing: You can also dial 1-305-XXX-XXXX; the leading 1 is the NANP country code.
Calling from outside the United States
- Format: [exit code] + 1 + 305 + XXX + XXXX
- From the UK, Europe, or most of Asia/Africa: 00 1 305 XXX XXXX
- From any mobile phone worldwide: +1 305 XXX XXXX
Is Area Code 305 a Scam? Safety & Protection Tips
Area code 305 is a legitimate Florida area code – a call from it is not fraudulent by default. However, scammers frequently spoof local codes like 305, faking the caller ID so their number appears to come from a trusted local line. Neighbor spoofing, which mimics the first six digits of your own number, is especially common.
Common scam tactics linked to this region
| Scam type | What to watch for |
|---|---|
| Government & immigration impersonation | Callers posing as ICE, USCIS, the IRS, or SSA threatening arrest or deportation |
| Bank & card fraud alerts | Claims of suspicious activity seeking your account details |
| Utility shut-off threats | Fake Florida Power & Light (FPL) disconnection demands |
| Package delivery scams | Fake texts or calls about a failed delivery with a bad link |
How to report, block, and look up 305 callers
- Never share personal or financial details with an unexpected caller, however urgent they sound.
- Block the number using your phone’s built-in call-blocking feature or a reputable call-screening app.
- Look up the number with a trusted reverse phone lookup before returning any call.
- Report it to the FTC at reportfraud.ftc.gov and register at DoNotCall.gov.
Nearby & Related Area Codes in Florida
Area code 305 shares and borders several other Florida codes:
- 786 – an overlay covering Miami-Dade and the Keys (see our 786 area code guide)
- 645 – the newest overlay of the Miami region (see our 645 area code guide)
- 954 & 754 – Broward County and Fort Lauderdale to the north (see our 954 area code guide)
- 561 – Palm Beach County further north (see our 561 area code guide)
Explore more codes across the state on our Florida area codes hub, or browse every prefix in our US area codes directory.
↑ See the complete list of All US Area Codes by State – every area code across all 50 states in one directory.
Explore Neighboring States
Researching area codes just across the state line? Start with these codes in the states that border Florida:
Frequently Asked Questions About Area Code 305
Where is the 305 area code located?
Area code 305 covers Miami-Dade County and the Florida Keys, including Miami, Miami Beach, Hialeah, and Key West. It operates on Eastern Time alongside the 786 and 645 overlays.
What is the difference between 305, 786, and 645?
There is no geographic difference. All three overlay the same Miami-Dade and Keys territory; 786 and 645 were added over the years simply to supply more phone numbers.
Is 305 a landline or cell phone area code?
Both. Area code 305 serves landlines, mobile phones, and VoIP numbers throughout Miami-Dade and the Keys.
Should I answer a call from an unknown 305 number?
If you are not expecting the call, let it go to voicemail. Legitimate callers leave a message, while spoofed or robocall numbers usually will not. Verify any unfamiliar number with a reverse lookup before calling back.
Related 305 Guides
- Is a 305 call safe? Read Is area code 305 a scam? Spam & safety guide.
- Local coverage: see the Miami area code guide.
- Worried about spam or robocalls? Browse our Scam Alerts directory.