--- title: "Area code 305: Florida, United States" url: "https://lookvalid.com/area-code/305.md" canonical_url: "https://lookvalid.com/area-code/305" last_updated: "2026-10-23" type: "reference" summary: "Area code 305 serves Florida, United States. Number formats, numbering rules, a live phone validator and the other codes in Florida." --- # Area code 305: Florida, United States Area code 305 serves Florida, United States. Number formats, numbering rules, a live phone validator and the other codes in Florida. NANPA lists 784 central office codes (prefixes) in use in area code 305, held by 26 holders across 6 rate centers. The largest rate center is MIAMI, with 488 prefixes (62%). Southern Bell Tel & Tel holds the most prefixes, 363 (46%). 42% of the prefixes are pooled, which means their thousands-blocks can belong to different companies. The FCC unwanted-call data has 4,680 complaints on file for 2,880 numbers in 305, most often filed as "Unwanted Calls". These are consumer reports, not findings. ## Facts - In service since: 1947-01-01 - Time zone: Eastern (E) - Assigned overlays: 786 (1998-03-01), 645 (2023-08-04) - Prefixes in use: 784 - Pooled prefixes: 333 (42%) - Rate centers: 6 - Companies holding prefixes: 26 - Assignment dates on file: 2001-01-02 to 2026-03-31 (111 prefixes) - ZIP codes in its places: 104 ## Rate centers | Rate center | Prefixes | Share | | --- | --- | --- | | MIAMI | 488 | 62% | | KEYS | 138 | 18% | | NORTH DADE | 112 | 14% | | PERRINE | 32 | 4% | | HOMESTEAD | 13 | 2% | | XXXXXXXXXX | 1 | <1% | ## Carriers | Holder | Prefixes | Share | | --- | --- | --- | | Southern Bell Tel & Tel | 363 | 46% | | New Cingular Wireless PCS | 92 | 12% | | Metropcs | 49 | 6% | | Omnipoint Miami E License | 43 | 5% | | Spok | 42 | 5% | | Abc Paging City Beepers | 38 | 5% | | 20 other carriers | 157 | 20% | A prefix holder is the company a code was assigned to, not necessarily a number's current carrier, because numbers can be ported to another company. ## History - 1947-01-01: Area code 305 went into service. - 1988-04-16: Area code 407 went into service and names 305 as its parent. - 1995-09-11: Area code 954 went into service and names 305 as its parent. - 1998-03-01: Area code 786 went into service as an overlay in the same area as 305. - 2023-08-04: Area code 645 went into service as an overlay in the same area as 305. ## Nearest area codes The area codes closest to 305, measured between the centers of the ZIP code places they serve, are 754 (about 19 miles), 954 (about 19 miles), 561 (about 54 miles), 728 (about 54 miles) and 239 (about 105 miles). ## ZIP codes 104 ZIP codes fall in places that have a rate center in this area code. The places with the most are Miami, FL (95 ZIP codes) and Homestead, FL (9 ZIP codes). A ZIP code and an area code are unrelated systems, so a ZIP code can sit in more than one area code and an area code spans many ZIP codes. ## Complaints on file 4,680 complaints for 2,880 numbers. Numbers whose latest complaint falls in each year: - 2023: 128 - 2024: 103 - 2025: 133 ## Questions ### Where is area code 305? NANPA assigns area code 305 to Florida, United States. ### In which state does area code 305 sit? Florida. 305 is one of 23 area codes the NANPA table assigns to the state. ### Which places does area code 305 cover? The places with the most ZIP codes among the rate centers in 305 are Miami, FL and Homestead, FL. The rate center list on this page shows all of them. ### Who owns area code 305? NANPA assigns area codes. Within 305, Southern Bell Tel & Tel holds the most prefixes, 363 prefixes or 46%. ### Which time zone does 305 use? The NANPA NPA report lists the time zone for 305 as Eastern (E). ### What year did 305 enter service? The NANPA NPA report gives an in-service date of 1947-01-01, so 305 has been in use since 1947. ### Does area code 305 have an overlay? Yes. 786 (in service 1998-03-01) and 645 (in service 2023-08-04) share the same area with 305, so numbers from all of them are local to each other. ### Which area codes are nearest to 305? The area codes closest to 305, measured between the centers of the ZIP code places they serve, are 754 (about 19 miles), 954 (about 19 miles), 561 (about 54 miles), 728 (about 54 miles) and 239 (about 105 miles). ### How many prefixes does area code 305 have? NANPA's report dated 2026-10-17 lists 784 prefixes in service in 305, spread over 6 rate centers and 26 holders. ### Are there complaints about 305 numbers? The FCC data on file has 4,680 complaints for 2,880 numbers in 305. They are unverified consumer reports. A number with no complaints on file is not proven safe. Sources: NANPA central office code report dated 2026-10-17; NANPA NPA report dated 2026-10-18; FCC unwanted-call complaints, data fetched 2026-10-17; ZIP code places from GeoNames (CC BY 4.0).