The 605 area code covers Sioux Falls, Rapid City, Aberdeen and more in South Dakota. Provision a local 605 number in minutes.
Area code 605 serves all of South Dakota, a vast state from the Missouri River to the Black Hills. Sioux Falls is the largest city and a significant banking center — several major credit card issuers are chartered here due to favorable state laws. The Black Hills, Mount Rushmore, and Badlands National Park make the western part of the state a major tourism destination.
Across South Dakota, the 605 area code serves roughly 890,000 residents in 4 communities — including Sioux Falls, Rapid City, Aberdeen, among others. Numbers in the 605 zone keep Centraltime, so a local line rings during your customers' business hours and shows a familiar SD caller ID on every outbound call.
605 was first introduced in 1947 under the North American Numbering Plan. It remains an active geographic code today.
Want a 605 number of your own? With Ajoxi you can claim one in minutes — no hardware, no contracts — and route calls, SMS, voicemail, and team messaging anywhere on a single UCaaS platform, with Tier-1 routing and clean caller-ID delivery on every line.
The 605 area code reaches 4 communities across South Dakota, from Sioux Falls to Brookings. A customer in any of them sees a familiar local number when you call, which is the single biggest driver of answer rates — and with Ajoxi you can claim a number in any of these cities, or several at once, and route every call to the same team.
Pair a local Sioux Falls presence with enterprise-grade UCaaS — calling, meetings, and messaging on one platform.
Get a 605 NumberA 605 number tells Sioux Falls customers you're local — instant trust and higher answer rates, no office required.
Every 605 line includes HD calling, video meetings, team chat, SMS/MMS, auto-attendant, call recording, and an AI assistant.
Already have a 605 number? Port it in for free. Your number stays yours — port out anytime, no lock-in.
The 605 area code covers Sioux Falls, Rapid City, Aberdeen, Brookings in South Dakota.
Phone numbers in the 605 area code operate on America/Chicago time.
Yes. The 605 area code was introduced in 1947 and remains an active geographic code today.
Yes. Ajoxi provisions virtual 605 numbers with instant activation, clean caller-ID delivery, Tier-1 routing, and no setup fees — so you can build a local presence in minutes.
Choose a 605 number in the Ajoxi dashboard and it activates immediately — no hardware, no contracts, and no setup fees. Prefer to keep a number you already use? Port any existing 605 number in for free, usually within a few business days and with no downtime during the switch.
Yes. Every 605 number supports SMS and MMS alongside HD calling, so your team can text customers, run campaigns, and reply to conversations from the same line — all in the browser on any device, with no separate app to install.
Provision a 605 number with instant activation, clean caller-ID, and Tier-1 routing — no setup fees, live in minutes.