Area Code 645

Florida

Area code 645 serves Florida, primarily Miami, in the Eastern Time (ET) time zone. It is an overlay area code sharing territory with area code 305.

Overlay Area Code

This area code is part of an overlay region, meaning the same geographic area is served by multiple area codes. Overlay codes were introduced to meet growing demand for phone numbers without requiring existing customers to change their numbers.

This area code shares its geographic region with: area code 305 (Miami).

In service since: 04-Aug-2023

Learn more about overlay and split area codes →

Demographics & Economics

Total Population: 2,711,261
Population Density: 1,071 people/sq mi
above U.S. average (U.S.: 93 people/sq mi)
Median Household Income: $68,694
near U.S. median (U.S.: $75,144)
Poverty Rate: 14.8%
above U.S. average (U.S.: 11.5%)
Unemployment Rate: 4.4%
above U.S. average (U.S.: 3.6%)
Education Attainment: Bachelor's Degree+
33.3%
near U.S. average (U.S.: 33.7%)
High School or Lower
34.7%

Statistics are population-weighted aggregations from Census ACS 5-year estimates. Population figures are approximate — see Sources & Methodology for details on how area code populations are derived.

See how this area code compares to all US area codes in the Statistics dashboard.

Time Zone

Eastern Time (ET)

NANPA Relief Status

According to the latest NANPA analysis (July 2026), this area code is not currently listed as exhausting within the next 36 months. No relief planning is in progress for this NPA.

Source: NANPA NPA Relief Planning Reports · See all relief planning statuses

Current Time

Eastern Time (ET)

Prefix Utilization

Geographic Coverage

State

Major Cities

Miami
Hialeah
Miramar
Miami Gardens
Miami Beach
Homestead
Kendall
Doral
North Miami
The Hammocks
Fountainebleau
Westchester
Kendale Lakes
Tamiami
Country Club
Coral Gables
Cutler Bay
North Miami Beach
Princeton
Aventura
South Miami Heights
Richmond West
Kendall West
West Little River

and 60 more cities

Area Code 645 geographic coverage map (light mode)

Demographics

The estimated population served by area code 645 is approximately 2,711,261. The population density is 1,071 people per square mile, which is higher than the national average of 93. The median household income is $68,694, which is near the national median of $75,144. Approximately 33.3% of adults hold a bachelor's degree or higher, compared to the national rate of 33.7%. This rate is near the national average. The poverty rate stands at 14.8%, which is higher than the national rate of 11.5%.

History

Area code 645 serves as an overlay for the same territory as area code 305. It was introduced in 2023 to provide additional phone number capacity for the region. It shares its territory with area codes area code 305 and area code 786.