Area code 813 serves the Tampa area, primarily Hillsborough County, plus Oldsmar (Pinellas) and parts of Pasco County. Created in 1953, it is now overlaid by 656.
The essentialsNumbering data · NumberResearch · as of 2026-09-18
Place
Tampa
Type
geographic
Status
in service
In service since
1953
Projected exhaust
2055 Q1
Status, dates and counts are read from NumberResearch (NANPA / CNAC / FCC records). Assignment records show initial assignees, not the carrier serving a number today.
A · Where it is
Where 813 is
Tampa Bay / Hillsborough County.
Communities served wholly or partly by 813:
TampaZephyrhillsOldsmar
Historically also covered St. Petersburg, Sarasota, Fort Myers and Lakeland before splits.
B · Relationships
How it relates to other codes
The codes 813 was split from, spawned, or shares its area with. A split divides the map and changes some numbers; an overlay shares the same ground and changes none — what's the difference?
Split from · 1953305MiamiCreated as a split from statewide 305 to serve the western peninsula.
Spawned · 1995941SarasotaThirteen southern/eastern counties split off as 941 on May 28, 1995.
Spawned · 1999727St. PetersburgPinellas (except Oldsmar) and western Pasco split off as 727 (Feb 1, 1999).
Overlay · 2022656Tampa (overlay)All-services overlay of 813, in service Feb 22, 2022.
What's changing. Overlaid by 656 since Feb 22, 2022; ten-digit dialing required. NOT overlaid by 728.
C · History
How 813 got here
1953
Created as a split from statewide 305 to serve the western peninsula / Gulf Coast.
Source: Wikipedia: Area code 813
1995-05-28
Thirteen southern/eastern counties split off as area code 941.
Source: Wikipedia: Area code 813
1999-02-01
Pinellas County (except Oldsmar) and western Pasco split off as area code 727.
Source: Wikipedia: Area code 813
2022-02-22
Area code 656 launched as an all-services overlay after 813 prefixes were exhausted.
Source: Wikipedia: Area code 813
D · Capacity
How full it is
Prefixes assigned
800
Prefixes available
0
Thousands-blocks assigned
4,122
Prefix-assignment counts describe allocation to carriers, not how many individual numbers are in use. Full technical records: NumberResearch ↗.
Live status, dates, assignment counts and exhaust forecast — data as of 2026-09-18 (CC BY 4.0).
Place, relationships and history above are compiled by North American Numbers from the sources listed and last checked 2026-09-18. A check date is not an expert review — see how this is made. Flag an error.
North American Numbers