business phone · 7 min read
How Many Area Codes Are in the US? [2026 Guide]
The US has 335 area codes: 317 geographic and 18 non-geographic. This guide covers area codes by state, territory, history, and how to get one for your business.
The United States has 335 active area codes as of 2026 — 317 geographic and 18 non-geographic.
NANPA (North American Numbering Plan Administration) administers these codes across all 50 states, Washington DC, Puerto Rico, and other US territories. When the system launched in 1947, North America started with just 86 area codes. Eight decades of population growth, the mobile revolution, and cloud phone adoption have multiplied that number nearly fourfold.
This guide covers the current count, a state-by-state breakdown, the full territory list, toll-free codes, and the history behind how the US got here.
How many area codes does the US have right now?
The 335 total breaks into four categories:
| Category | Count | Examples |
|---|---|---|
| Geographic (US states + DC) | 317 | 212 (NY), 415 (SF), 312 (Chicago) |
| US territory geographic | 5 territories | 787/939 (PR), 340 (USVI), 671 (Guam) |
| Toll-free | 7 | 800, 888, 877, 866, 855, 844, 833 |
| Special / premium | Several | 900 (premium rate), 500 series (personal) |
The 317 geographic codes are assigned to specific regions and appear on locally issued phone numbers. The 18 non-geographic codes have no fixed geography — a toll-free 800 number can be answered from anywhere.
NANPA assigns codes when an existing area approaches exhaustion (typically when 80–90% of available numbers are in use).
Area codes by state — the top 5 states
Five states account for nearly a third of all US geographic area codes:
| State | Area Codes | Example Codes |
|---|---|---|
| California | ~36 | 213, 310, 415, 619, 916 |
| Texas | ~27 | 214, 713, 512, 210, 817 |
| New York | ~19 | 212, 718, 716, 585, 315 |
| Florida | ~18 | 305, 407, 813, 954, 239 |
| Illinois | ~14 | 312, 773, 847, 630, 217 |
California leads because of sheer scale: the Los Angeles metro alone uses eight area codes (213, 310, 323, 424, 661, 747, 818, and the pending 738 overlay). San Francisco, San Jose, and Sacramento each carry multiple codes of their own.
At the other end, North Dakota and South Dakota each have a single area code (701 and 605 respectively), reflecting lower population density and slower number demand.
History — from 86 area codes to 335
The North American Numbering Plan launched in October 1947, engineered by AT&T’s Bell Labs to enable direct long-distance dialing without operator assistance. The original system divided North America into 86 Numbering Plan Areas (NPAs), each assigned a three-digit code.
The first customer-dialed direct long-distance call using an area code was placed November 10, 1951 — from Englewood, New Jersey to Alameda, California.
Timeline of key expansions:
| Era | What happened |
|---|---|
| 1947 | 86 NPAs at NANP launch |
| 1951–1980s | Gradual splits as regions grew; California went from 1 code (415) to several |
| 1984 | AT&T divestiture; Bell Operating Companies retain regional codes |
| 1990s | Cell phone explosion forces rapid splits — New York adds 917, LA adds 310 |
| 1995–onward | Overlay era begins — new codes share existing geography, 10-digit dialing becomes mandatory in those areas |
| 2000s–2020s | Continued overlay additions; cloud VoIP further accelerates number demand |
| 2026 | 335 active US area codes |
The shift from geographic splits to overlays in the mid-1990s was significant. Splits assigned the new code to part of the region while existing customers kept the old one. Overlays assigned the new code to the entire region alongside the old one — more disruptive (everyone must dial 10 digits) but it preserved existing numbers.
Why does the US keep adding new area codes?
Each 10-digit US number follows the format: NXX-NXX-XXXX (area code + exchange + line). With exchange digits running 200–999 and line digits 0000–9999, each area code theoretically holds about 8 million numbers — but reserved blocks, porting buffers, and carrier allocations reduce usable capacity significantly.
Three forces drive exhaustion:
-
Cell phone proliferation. A household that needed one landline in 1985 may use five or six numbers today (personal mobile, business mobile, VoIP lines).
-
Cloud VoIP and virtual numbers. Businesses provision numbers in target markets regardless of physical location, increasing demand in high-value area codes like 212, 310, and 415.
-
10DLC and SMS registration. Businesses running text campaigns now dedicate phone numbers to messaging, consuming blocks of numbers outside traditional voice demand.
NANPA publishes NPA exhaust forecasts. When a code is projected to exhaust within 36 months, the relief planning process begins — typically resulting in an overlay code and a mandatory 10-digit dialing transition.
How many area codes does each US territory have?
US territories participate in NANP alongside the 50 states. Each has at least one dedicated area code:
| Territory | Area Code(s) | Notes |
|---|---|---|
| Puerto Rico | 787, 939 | 787 split from 809 in 1996; 939 overlay added 2001 |
| US Virgin Islands | 340 | Split from 809 in 1998 |
| Guam | 671 | Original NANP assignment |
| Northern Mariana Islands | 670 | Separate from Guam since 1997 |
| American Samoa | 684 | Original NANP assignment |
Puerto Rico is the most number-intensive US territory, requiring two codes to handle its population and business demand.
Non-geographic area codes — toll-free and special
Non-geographic codes have no fixed location. Callers in any US state can dial them at no charge (toll-free) or at a premium rate (900).
Active toll-free prefixes:
| Code | Status |
|---|---|
| 800 | Original toll-free (1967); heavily exhausted |
| 888 | Added 1996 |
| 877 | Added 1998 |
| 866 | Added 2000 |
| 855 | Added 2010 |
| 844 | Added 2013 |
| 833 | Added 2017 |
The next toll-free prefix (822) is reserved for future activation when 833 approaches exhaustion.
Other non-geographic codes:
- 900 — Premium-rate services; caller pays above-standard rate
- 500 series (500, 521–533) — Personal Communications Services; numbers follow the subscriber across carriers
How to find which area code serves a specific city
The quickest reference is DialPhone’s area code hub, which covers 313 active US area codes with per-page data including population served, time zone, port-in availability, scam call patterns, and local business context.
For any code we cover, you can provision a business number with that area code instantly — no physical presence in the region required. Browse by state:
- California area codes — 36 codes, the most of any state
- Texas area codes — 27 codes
- New York area codes — 19 codes
Individual code pages for high-demand markets: 212 · 213 · 305
For official assignments, NANPA maintains the authoritative registry at nationalnanpa.com. The FCC also publishes area code reference data at fcc.gov/general/area-code-information.
US area code FAQ
US area code FAQ
How many area codes are in the US?
The United States has 335 area codes total. That figure breaks down into 317 geographic area codes — assigned to specific regions across all 50 states, Washington DC, and US territories — and 18 non-geographic codes used for toll-free, personal communications, and premium services.
NANPA (North American Numbering Plan Administration) maintains the official registry and assigns new codes when existing ones approach exhaustion.
How many area codes does California have?
California has approximately 36 area codes — more than any other US state. The high count reflects the state's massive population, sprawling metro regions, and decades of rapid cell phone adoption.
Key California codes include 213 and 323 (Downtown LA), 310 and 424 (Westside LA), 415 (San Francisco), 408 and 669 (San Jose), 619 and 858 (San Diego), and 916 (Sacramento). Many are overlays — multiple codes sharing the same geographic footprint.
Which US state has the most area codes?
California leads with roughly 36 area codes, followed by Texas (27), New York (19), Florida (18), and Illinois (14). These states combine large populations, dense urban cores, and high business phone demand — all factors that drive area code exhaustion and force NANPA to assign new codes.
How many area codes does New York City have?
New York City is served by four area codes: 212 (Manhattan, the original 1947 code), 718 and 347 (the outer boroughs — Brooklyn, Queens, the Bronx, Staten Island), and 646 (a Manhattan overlay added in 1999 as 212 numbers ran low).
Manhattan also has overlay 917, originally assigned for pagers and cell phones in 1992, which now covers the entire New York City area.
What is the newest US area code?
New area codes are introduced regularly by NANPA as older codes near exhaustion. Recent additions include 820 (Northern California, added as a 916 relief code), 548 (Ontario, Canada), and several pending codes listed in NANPA's planning documents.
You can view approved and pending future codes at nationalnanpa.com under the NPA relief planning section.
What are non-geographic area codes?
Non-geographic area codes are not tied to a physical location. The 18 US non-geographic codes include the seven active toll-free prefixes (800, 888, 877, 866, 855, 844, 833), personal communications services codes (500 series), and the 900 premium-rate prefix.
Toll-free numbers can be called from anywhere in the US at no charge to the caller — the business receiving the call pays the usage fee.
How many area codes does Puerto Rico have?
Puerto Rico has two area codes: 787 (the original, assigned in 1996 when Puerto Rico split from area code 809) and 939 (an overlay added in 2001 as 787 numbers became scarce).
Both codes cover the entire island. Puerto Rico participates in the North American Numbering Plan (NANP) alongside the 50 US states, DC, and other territories.
Why does the US keep adding new area codes?
Number exhaustion drives new area code additions. Each 10-digit US number uses a 3-digit area code + 3-digit exchange + 4-digit line number, allowing roughly 8 million numbers per area code (exchanges 200–999, skipping reserved blocks).
Since the 1990s, cell phone proliferation doubled demand overnight — a household that once needed one number suddenly needed four or five. NANPA responds by splitting geographic regions into smaller areas or adding overlay codes that share the same footprint with mandatory 10-digit dialing.
Get a US business phone number
You can get a phone number in any of the 313 area codes DialPhone covers — including prestige codes like 212, 310, and 415 — in under two minutes.
No physical office required. Numbers provision instantly with STIR/SHAKEN A-attestation so your caller ID displays cleanly rather than as “Spam Risk.”
- Start free trial — get your number today
- See DialPhone Business Phone plans and pricing
- Learn about DialPhone’s business phone system
Already have a number you want to keep? Our number porting guide walks through the full process — most US local numbers port in 2–5 business days.
About the author
Growth Operations Lead at DialPhone
Darshan leads Growth Operations at DialPhone, where he owns three interconnected programs: the comparison content operation, the open VoIP Pricing Dataset, and the test-call methodology used to verify every pricing claim published on the site.
His research process starts with hands-on product trials and live vendor quotes — not marketing pages. Pricing figures are cross-checked against actual invoices and re-verified on a rolling quarterly cycle, with the underlying dataset kept public for independent re-verification. That dataset now covers 40+ VoIP and virtual-number providers across the US and Canada market.
Darshan also leads DialPhone's AI receptionist evaluation program, running structured test-call scenarios across English, Spanish, and French to assess transcription accuracy, intent routing, and escalation behavior. Methodology notes and raw scoring are archived in the research section.
For factual corrections or dataset discrepancies, Darshan can be reached at the DialPhone editorial address. Verified corrections are published as errata with a changelog date — no silent edits.