320 Area Code: St. Cloud & Central Minnesota Numbers

The 320 area code covers central and west-central Minnesota — anchored by St. Cloud, the "Granite City," and reaching out to Willmar, Alexandria, and Hutchinson. It is the band of Minnesota that sits just northwest of the Twin Cities, a region of lakes, farmland, and quarry towns. Created in 1996, 320 is one of Minnesota's younger area codes but covers a large, distinctly central-Minnesota footprint.

This guide covers where the 320 area code is, how it split from 612, the Granite City economy that defines it, its time zone and how calling and texting work, the "is it California?" mix-up, how to spot fake 320 contacts, and how to get a 320 number from anywhere.

Where is the 320 area code?

The 320 area code location is central and west-central Minnesota, wrapping around the northwest side of the Twin Cities metro without including it. The Minneapolis–St. Paul area uses 612, 651, 763, and 952; northern Minnesota uses 218; the south uses 507.

Cities and communities inside the 320 footprint include:

How 320 split from 612

For decades, most of Minnesota outside the far north and south fell under the 612 area code, the Twin Cities' original 1947 code. As the metro and its surrounding regions grew through the 1990s, 612 ran short of numbers.

In 1996, the 320 area code split off central and west-central Minnesota, taking St. Cloud, Willmar, and Alexandria out of 612. Up north, the 218 area code has covered Duluth and northern Minnesota since 1947, so 320 effectively fills the central band between the Twin Cities and the north. The region has stayed steady since, so 320 still uses a single code with no overlay.

The Granite City and central Minnesota

St. Cloud earned the nickname "Granite City" for the quarries that have shaped the region for over a century — central Minnesota granite has gone into monuments and buildings across the country. But the 320 economy is broader than stone:

• Quarrying and manufacturing — granite, plus a strong manufacturing base including 3M's Hutchinson operations and metal-fabrication firms.
• Agriculture and food processing — Willmar and Kandiyohi County are a major poultry and agribusiness center for the upper Midwest.
• Education and healthcare — St. Cloud State University and CentraCare's regional hospital network anchor the metro.
• Lakes tourism — Alexandria and the surrounding lakes country draw seasonal tourism and recreation business.

For manufacturers, agribusiness, healthcare, and service firms, a 320 number signals you are part of this central-Minnesota economy.

320 time zone, calling and texting

The 320 area code time zone is Central Time (CT) — CST (UTC−6) in winter and CDT (UTC−5) in summer, the same clock as Chicago and the rest of Minnesota. At noon in St. Cloud it is 1 PM in New York and 10 AM in Los Angeles.

Calls and text messages to a 320 number both use the same ten digits. Because 320 has no overlay, seven-digit local dialing still technically works, but ten digits is the reliable standard.

Is 320 a California area code?

Some people search whether 320 is in California — so to be clear: no, 320 is a Minnesota area code, not a California one. It serves St. Cloud and central Minnesota. California uses codes like 213, 310, and 415; there is no 320 in California. If a "320" caller claims to be in California, treat it as a sign of spoofing.

Putting a 320 number to work for your business

A 320 number puts a central-Minnesota address on your caller ID without a local lease. For manufacturers, agribusiness, healthcare groups, and service firms selling into the St. Cloud region, a local code reads as familiar and lifts answer rates over an unknown out-of-state or toll-free line.

You do not need a St. Cloud office to claim one. A cloud phone provider can assign you a 320 number that rings and texts on your existing devices and routes calls anywhere. With a provider like My Country Mobile, you can pick a 320 line, set up routing, an auto-attendant, and voicemail, and be live in minutes — solo operator or national brand.

Spotting fake 320 calls and texts

Scammers spoof 320 numbers — faking a central-Minnesota prefix on calls and texts, sometimes matching the first digits of your own number — so the contact looks local. A 320 on your screen does not prove the sender is really in Minnesota.

A few habits keep you safe:

• Let unknown 320 calls go to voicemail, and don't tap links in unexpected 320 texts.
• Never share one-time codes, card numbers, or login details with an inbound caller or texter.
• Be skeptical of "package delivery," "your account is locked," or prize-style messages that pressure you to act fast.
• Use carrier spam filtering. The FCC's STIR/SHAKEN call authentication framework is why many phones now label these as "Spam Risk."

Key takeaways

• 320 covers St. Cloud and central Minnesota — northwest of the Twin Cities, not the metro itself.
• It split from 612 in 1996 and still uses a single code with no overlay.
• St. Cloud is the Granite City, anchoring a quarrying, manufacturing, and agribusiness economy.
• It runs on Central Time; it is in Minnesota, not California.
• You can get a 320 number from the cloud without a Minnesota address.

Frequently asked questions