If your phone number has one of these 10 area codes, never get rid of it

Most people rattle off their area code without a second thought. But in a handful of places, those digits hint at where someone lives, how long they've been there, and what circles they move in.

Area codes were built as routing tools, not status markers. As cities ran low on numbers, phone companies split regions and stacked newer codes on top of old ones. Newcomers got the new codes, while longtime residents and established firms kept the originals.

Stacker compiled 10 area codes that still command respect, drawing on telecom histories, numbering records, and news archives.

212: Manhattan's original

AT&T gave 212 to all five boroughs in 1947, then moved the outer boroughs to 718 by 1992, leaving a Manhattan-only code with a fixed supply. New lines now go to 917, 646, or 332. As telecom analyst Roger Entner told Marketplace, a 212 number "means you've been in New York for a long time."

310: LA's Westside

Carved out of 213 in late 1991, 310 stretches across LA's Westside, from Malibu to Beverly Hills. As one source told the Los Angeles Times in 2005, "When you have that 310 number, it says something about you." The Los Angeles Almanac goes further, tying a 310 number to Hollywood clout.

202: The capital's calling card

For more than seven decades, D.C. ran on exactly one area code, never divided, and 202 became shorthand for proximity to power. Demand finally forced a change in 2021, when 771 joined it as an overlay.

305: Magic City

In 1947, 305 handled every phone in Florida, and Miami has held onto it ever since. The digits evoke late nights, beaches, and Miami's role as a gateway to Latin America, and Pitbull even goes by "Mr. 305."

617: Boston proper

Once covering the eastern two-thirds of Massachusetts, 617 shrank through splits in 1988 and 1997 until 617 meant Boston and close neighbors like Cambridge and Brookline. That puts Harvard, MIT, and the Financial District under one code.

415: The city by the bay

A 1947 original, 415 was whittled down by splits to San Francisco and Marin, so 415 reads as pure San Francisco. With Salesforce, Uber, and Airbnb based in the city, it signals tech money (though Apple and Google actually sit in 408 and 650).

312: The Loop

Chicago's original code once took in almost the whole metro. Splits in 1989 and 1996 left 312 wrapped tightly around the city's downtown, making it one of the nation's smallest code territories and shorthand for the business district.

404: Inside the Perimeter

404 once covered all of Georgia. In 1995, the suburbs moved to 770 along a line close to Interstate 285, so a 404 number marks you as "inside the Perimeter," home to downtown, Midtown, and many corporate headquarters.

213: Downtown LA

One of California's three original codes, 213 once covered the whole south of the state. Splits cut it down to downtown and a few nearby neighborhoods, and with 323 now overlaying that turf, an old-school 213 number is a prized find.

646: Manhattan's runner-up

Manhattan's first overlay arrived in 1999 and never matched 212's prestige. "Seinfeld" mocked it a year early: In "The Maid," Elaine fumes over getting a 646 number, and a would-be date bolts when he sees it.

Why people pay for three digits

Part of the appeal is psychological. NYU psychology professor Jay Van Bavel told NBC News that people identify with a code like 212 because it represents a "high-status, distinctive geographic area."

That pull has built a real resale market. Carriers can't simply hand out fresh 212 numbers, so brokers like RingBoost collect them from people leaving town and businesses shutting down, then sell them for anywhere from $175 to nearly $30,000, Marketplace reported. On the West Coast, writer Joel Stein found that 310 numbers outnumber and outprice New York's 917s on one resale site, with many buyers living elsewhere and dreaming of LA.

Thanks to number portability, a legacy number can follow its owner through carrier switches and cross-country moves. Let it lapse, and it's gone for good.