The 813 area code is Tampa, Florida — all of Hillsborough County, plus Oldsmar and the central and southeastern slice of Pasco County — and since February 2022 the 656 overlay covers exactly the same ground. Two codes, one Tampa.
That second sentence is the part a surprising amount of published content still gets wrong. Articles, directory listings, and CRM area-code tables written before 2022 say “Tampa is 813” and stop — so a 656 number gets misread as out-of-state or suspicious when it is simply a newer Tampa line. Here is the current picture, the dates behind it, and how to judge a call from either code.
Tampa’s area code doubled: 813 and 656
The footprint is the eastern half of Tampa Bay: Tampa itself, Brandon, Riverview, Temple Terrace, Plant City, and the rest of Hillsborough County, reaching north into Pasco County for Wesley Chapel, Land O’ Lakes, and Zephyrhills. One quirk survives from the wireline era: Oldsmar, which sits in Pinellas County, kept 813 when the rest of Pinellas moved to 727 — its trunks were wired into the Tampa network, and rewiring them was judged too expensive.
Since February 2022, area code 656 has served the identical territory. It is an overlay, not a replacement: no existing 813 number changed, and new lines draw from 656 as 813 prefixes deplete. Our guide to how area codes work traces how the overlay became the standard relief method.
The 656 timeline, with the dates most articles miss
- March 31, 2020 — the Florida Public Service Commission approves an all-services overlay for the 813 region.
- June 8, 2020 — NANPA issues Planning Letter 541 assigning area code 656 (the schedule was later revised by Planning Letter 552, December 4, 2020).
- April 17, 2021 — permissive ten-digit dialing begins; seven digits still work.
- January 22, 2022 — ten-digit dialing becomes mandatory across 813.
- February 22, 2022 — 656 enters service; the first Tampa numbers in the new code are assigned.
The practical consequences: every local call in Tampa now requires the area code, and a 656 caller is exactly as local as an 813 one — same rate centers, same coverage, same cost to call.
From statewide sprawl to one county: how 813 shrank
813 is one of Florida’s oldest codes, in service since January 1, 1953, when it was carved out of 305 — originally the whole state’s area code. At its peak, 813 ran down the Gulf Coast from Pasco County to Collier County and the mainland edge of Monroe — the southern tip of mainland Florida.
Growth ate that territory in two bites. On May 28, 1995, thirteen counties to the south and east — Manatee down through Collier, including Sarasota and Fort Myers — split off as 941. On July 1, 1998, most of Pinellas County (St. Petersburg, Clearwater) and western Pasco split off as 727, with mandatory dialing from February 1, 1999, leaving 813 with essentially Hillsborough plus its Pasco and Oldsmar edges. Even that reduced footprint filled up, which is what forced the 656 overlay two decades later.
Is a 656 number as local as an 813 number?
Yes — 656 numbers are assigned in the same Tampa-area rate centers as 813 and are local in every billing and coverage sense. The only difference is age: 813 inventory dates back decades, while 656 pools opened in 2022, so newer businesses, new mobile lines, and recently provisioned numbers are where 656 shows up first. Treating 656 as foreign is the single most common Tampa caller-ID mistake right now.
Reading an unexpected 813 or 656 call
Context first: Tampa’s routine traffic looks like any large metro’s — hospital systems, school districts, insurers, logistics and port-adjacent businesses, plus the seasonal churn of a fast-growing region.
Then the rule that outranks any geography: the displayed code proves nothing about the caller. Numbers port and travel with their owners, VoIP originates from anywhere, and caller ID spoofing can put 813 digits — or your own prefix, via neighbor spoofing — on a call that never touched Florida. An area code is not a trust signal. If a call claims to be your bank, utility, or clinic, hang up and call back on the number you look up yourself; that habit beats every spoofing variant at once.
813 numbers for Tampa businesses
Local presence works in Tampa the way it works everywhere: Hillsborough customers answer Hillsborough numbers, and local presence dialing measurably outperforms out-of-area caller ID. Businesses serving the market can hold local DID numbers in 813 or 656 rate centers regardless of street address — and the locals’ attachment to the digits is real enough that Tampa celebrates “813 Day” every August 13.
A note for multi-market operations: Florida’s big metros each carry their own code identity — Jacksonville on the 904 area code, Miami on 786, Fort Lauderdale on 954, St. Petersburg and Clearwater on 727 — so provisioning per-market numbers rather than one statewide caller ID is usually worth the small effort.
Frequently asked questions
Is 656 a Tampa area code?
Yes. 656 has overlaid the 813 region — Hillsborough County, Oldsmar, and central and southeastern Pasco County — since February 22, 2022. A 656 number is as local to Tampa as an 813 number; it simply comes from the newer pool, assigned as new Tampa lines and DIDs exhaust 813 prefixes.
Why does Oldsmar use 813 instead of 727?
When most of Pinellas County split off to 727 on July 1, 1998, Oldsmar stayed behind in 813 because its telephone trunks were wired into the Tampa network and rewiring them was considered too costly. It remains an 813 island on the Pinellas side of the county line.
When did Tampa switch to ten-digit dialing?
Permissive ten-digit dialing began April 17, 2021, and became mandatory on January 22, 2022, one month before 656 entered service. Every local call in the 813/656 region now requires the full ten digits.
What area codes did 813 split into?
Two: 941 took thirteen counties across southwest Florida, from Manatee down through Collier, on May 28, 1995, and 727 took most of Pinellas County plus western Pasco on July 1, 1998. Since then 813’s relief has come from the 656 overlay rather than further splits, so no Tampa number will be forced to change.
Should I trust a call just because it shows 813?
No — the code only tells you where a number was assigned, not who is dialing. Ported numbers, VoIP, and caller ID spoofing all break the geography. Verify any caller requesting money or information by calling back on a published number.
SIPNEX is an FCC-licensed carrier providing local DID numbers in the 813 and 656 rate centers and every US market, toll-free numbers as a registered RespOrg, and high-volume SIP trunking — every call signed at A-level under our own STIR/SHAKEN certificate. Talk to an operator or call (833) 665-2220.
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