Introduction
Area codes are three-digit prefixes that tell the phone network where to send a call. The 624 area code is the newer overlay serving Western New York, sharing the same footprint as the long-standing 716 code. Callers still dial the same ten digits either way.
Some prefixes are reserved for toll-free lines, government use, or future growth. The 624 area code overlays 716, helping carriers assign fresh numbers across Buffalo, Niagara Falls, and the surrounding counties without retiring a single existing line.
Key Takeaways
- The 624 area code is an all-service overlay on 716, active for new numbers since November 16, 2023.
- Area code 716 was one of the original 86 area codes created in 1947, and once covered all of Western New York, including Rochester.
- Callers across the 716/624 complex must dial all 10 digits for every call, including calls within the same city.
- 624 numbers serve Buffalo, Niagara Falls, Jamestown, and Tonawanda across four counties.
- The overlay adds fresh number capacity without forcing any existing 716 customer to change their number.
Before 624: How Western New York Got Its 716 Line
Long-distance dialing traces back to 1947, when the North American Numbering Plan (NANP) split the US, Canada, and parts of the Caribbean into numbered zones. Automatic switching replaced human operators, letting callers dial direct instead of waiting to be connected.
Western New York's own numbering history starts right at that origin point. Area code 716 was one of the original 86 area codes assigned in 1947, and for more than five decades it covered the entire western half of the state, including both Buffalo and Rochester. That changed in 2001, when regulators split the region: Rochester took the new area code 585, while Buffalo and Niagara Falls kept 716.
The 2023 Overlay: Why 624 Joined 716
By the early 2020s, growth across Buffalo, Niagara Falls, and the surrounding suburbs was consuming 716 numbers faster than pooling alone could offset. Regulators approved area code 624 as an all-service overlay, giving carriers a second set of prefixes to draw from without redrawing a single county line.
The overlay went into service on November 16, 2023. Existing 716 customers kept their numbers exactly as they were — the change affected only how new numbers get assigned and how everyone in the region now dials a local call.
Cracking the Code: How to Dial a 624 Number
Every 624 number follows the same ten-digit structure used across the NANP: a three-digit area code plus a seven-digit local number. Because 624 and 716 now overlay the same territory, ten-digit dialing is how the network tells the two codes apart.
Dialing patterns for a 624 number:
- Local call: Dial 624 (or 716) + the seven-digit number — 10-digit dialing is mandatory across the whole overlay complex.
- Domestic long-distance: Dial 1 + 624 + the seven-digit number.
- From Canada: Dial 1 + 624 + the seven-digit number (same NANP framework, and worth noting for a region right across the border from Ontario).
- From the UK: Dial 00 + 1 + 624 + the seven-digit number.
- From most other countries: Dial your international access code + 1 + 624 + the seven-digit number.
Correct dialing keeps calls routing cleanly across the network. Behind the scenes, wholesale voice termination carries those minutes to their destination — weak termination agreements are a common cause of dropped or misrouted long-distance calls.
Typos cause failed connections, wrong numbers, or surprise charges, so always double-check the full number before dialing. Businesses running auto-dialers or PBX systems should confirm 624 sits in their outbound dial plans alongside 716.
From Factories to Falls: Who Feels the 624 Rollout
New area codes track real demand. The average household now juggles three or four numbers across phones, tablets, and connected devices, and Western New York's own growth adds even more pressure on top of that national trend.
The region's economy has diversified well beyond its manufacturing roots into healthcare and cancer research anchored by Roswell Park Comprehensive Cancer Center, higher education led by the University at Buffalo, and a tourism industry built around Niagara Falls that draws millions of visitors a year.
Rolling out an overlay isn't simple for carriers either. Switches, billing systems, and 911 databases all need updating, and every step has to protect number portability for callers keeping their existing 716 line.
New codes open fresh inventory too. The 624 overlay unlocks number blocks and vanity numbers no longer available under 716, giving newer businesses options that would otherwise be gone. Wholesale VoIP providers can assign 624 DIDs to clients wanting a Buffalo-area presence without an office.
Winning Local Trust With a Buffalo-Area Number
624 numbers build local trust — customers answer more readily when they recognize the area code. A local number signals a company serves the region's healthcare, education, and tourism sectors, boosting answer rates in Buffalo, Niagara Falls, and Cheektowaga.
A similar overlay played out further south when the 771 area code launched over Washington, D.C., giving government and finance firms there the same kind of recognizable local prefix that Buffalo-area businesses now lean on to build trust with regional customers.
Cutting Costs and Blocking Spoofers With VoIP
VoIP simplifies life across Western New York — cloud phone systems assign 624 numbers to any user, anywhere, so remote teams and multi-site offices can share one local prefix. Calls route over the internet, with forwarding, voicemail-to-email, and auto-attendants built in.
Cost is the clearest advantage. Landlines bill per-minute, distance-based rates that add up fast for call centers and sales teams. VoIP flattens that structure — a call to a 624 number costs the same whether it starts in Niagara Falls or across the country.
Security matters just as much. As 624 becomes familiar, scammers may spoof it to look local — running fake utility, tax, or banking scams. Carriers counter this with STIR/SHAKEN, which digitally signs calls so recipients can verify the caller's identity. Report suspicious numbers to the FCC guide.
What Callers See When a 624 Number Rings
Caller ID shows the full ten-digit number before anyone answers, and a familiar area code still earns more pickups than an unfamiliar one. As 624 spreads alongside 716, businesses using it inherit that same regional recognition instantly.
Spam-detection apps flag numbers based on community reports, so legitimate 624 lines registered to verified businesses stay cleaner and easier to trust. That matters most for clinics, hospitality operators, and campus offices chasing high connect rates across the region.
Carriers watch call patterns on every prefix, and 624 is no exception. Numbers with unusually high volumes, short call durations, or spikes in spam reports risk throttling or an outright block, regardless of how legitimate the business behind them is.
Staying Compliant: TCPA Rules for the 716/624 Complex
Staying compliant protects deliverability. Keep call cadence reasonable, honor opt-out requests immediately, and follow TCPA guidance for any automated or marketing call placed to Western New York residents.
How to Get a 624 Number
Provisioning a 624 number through TKOS takes minutes rather than the days a traditional carrier setup often requires. The entire process runs through a self-service dashboard, so clinics, hospitality operators, and campus offices across Western New York can add a local presence without waiting on a technician or signing a long-term contract.
Because 624 numbers are cloud-based DIDs, they route to any device — a desk phone, a softphone app, or a mobile handset — the moment they're activated, regardless of where the team answering the call happens to be based.
TKOS customers expanding into other markets often also set up numbers in the 943 area code, giving a growing business a Metro Atlanta presence alongside its new Buffalo line — all managed from the same TKOS dashboard.
Conclusion
The 624 area code is a capacity fix wearing a phone number's clothes. It proves Western New York's healthcare, education, and tourism growth outpaced 716's old numbering supply. Rooted in the 1947 NANP framework and layered onto 716 in 2023, it keeps calls routing cleanly across the region.
Stay cautious no matter the prefix: never share account details, Social Security numbers, or passwords with an unexpected caller, even one with a local-looking 624 or 716 number. Let unfamiliar calls go to voicemail, verify before calling back, and report suspicious activity to carriers and the FCC.
