In the United States the area code still carries meaning. People recognise their own code and the codes of big cities, and many are more likely to answer or call back a number that looks local. If you sell into the US, your choice of area code matters.
How US numbers are structured
US numbers follow the North American Numbering Plan (NANP), shared with Canada and several Caribbean countries. Every number has ten digits:
- a three-digit area code (NPA), for example 212
- a three-digit exchange (NXX)
- a four-digit line number
Written nationally it looks like (212) 555-0123. Internationally it is +1 212 555 0123. The country code +1 is shared by the whole NANP, so the area code alone identifies the region.
Overlays: why cities have several codes
When a region runs out of numbers, regulators add an overlay, a new area code covering the same geography. New York City, for example, is served by 212, 646 and 332 in Manhattan, and 718, 347 and 929 in the outer boroughs. Our New York numbers page lists the codes available.
The original codes, such as 212 in Manhattan or 213 and 310 in Los Angeles, are often seen as more prestigious. Newer overlays work exactly the same.
Choosing area codes for sales and support
Match your customers, not your office. If most of your pipeline is in Texas, numbers from 214 (Dallas), 713 (Houston) or 512 (Austin) will look familiar to prospects.
One number per region for outbound teams. Many sales teams use a local number for each target metro so calls look local. We look at the evidence in local presence dialling.
Mind the rules on outbound calling. US carriers use STIR/SHAKEN call authentication and analytics to flag suspected spam. Local numbers help answer rates only if they are used responsibly. See caller ID, STIR/SHAKEN and spam labels.
Toll-free as an alternative
For national support lines, a US toll-free number (800, 888, 877, 866, 855, 844 or 833) is often the better choice. Read US toll-free prefixes explained.
Frequently asked questions
Can I get a US number without a US company?
Usually yes for local numbers. Some uses, such as texting from local numbers, have extra registration rules.
Do different area codes cost different amounts?
Pricing is normally similar across standard local area codes. Each number shows its price before checkout.
Browse US cities and area codes