Area Code 813

Florida

Area code 813 serves Florida, primarily Tampa, in the Eastern Time (ET) time zone. It has served the region since 01-Jan-1953.

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 656 (Tampa).

In service since: 01-Jan-1953

Learn more about overlay and split area codes →

Area Code Splits

Parts of this area code’s original geographic region were later assigned new area codes through splits. When a split occurs, some customers in the original area code region are assigned the new area code.

Split into: area code 727 (St. Petersburg), area code 941 (Plantation).

Learn more about overlay and split area codes →

Demographics & Economics

Demographic Data Unavailable for Area Code 813

County-level demographic data is not available for this area code because NPA boundary polygons are not publicly distributed by NANPA. We use geographic boundary data from the Colorado Open Data Portal to map area codes to counties, which currently covers 194 of 376 geographic area codes.

Demographic statistics (population, income, education, poverty) require county-level aggregations from Census ACS data. Without a county mapping, these aggregations cannot be computed. We are actively seeking additional data sources to improve coverage.

Statistics are population-weighted aggregations from Census ACS 5-year estimates where county boundary data is available.See Sources for details.

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

Tampa
Brandon
Riverview
Town 'n' Country
Wesley Chapel
Land O' Lakes
Plant City
Valrico
Egypt Lake-Leto
Carrollwood
Sun City Center
Lake Magdalene
Ruskin
East Lake-Orient Park
Apollo Beach
Citrus Park
Temple Terrace
Lutz
Keystone
Palm River-Clair Mel
Fish Hawk
Northdale
Westchase
Bloomingdale

and 24 more cities

Area Code 813 geographic coverage map (light mode)

History

Area code 813 was established in 1953 as a geographic area code. Over time, area codes area code 727 and area code 941 were split from 813. It shares its territory with area code area code 656.

Demographics

Detailed demographic and economic data is not yet available for area code 813.

County Coverage

Population-weighted county share based on aggregated ZCTA population (100% = total mapped population for area code 813).

County	Population	Share
Hillsborough, FL	1,527,285	78.7%
Pasco, FL	331,854	17.1%
Polk, FL	31,268	1.6%
Manatee, FL	29,119	1.5%
Pinellas, FL	22,337	1.2%

Area Code 813 Family Tree

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Total Codes

Splits

Overlays

Max Depth

All Descendants

Code ▲	State	Type	In Service	Parent
239	FL	split	11-Mar-2002	941
656	FL	overlay	22-Feb-2022	813
727	FL	split	01-Jul-1998	813
863	FL	split	20-Sep-1999	941
941	FL	split	28-May-1995	813

Area code 813 was originally assigned in 01-Jan-1953 to serve FL. Over the years, it has generated 5 descendant area codes through a combination of geographic splits and overlays as demand for telephone numbers grew.