Business phone numbers in South Dakota
31,000+ local numbers available now, from Rapid City, North Sioux City, De Smet and across the state. Pick one, and it's ringing in minutes.
- 31,000+
- numbers available
- 1
- area code with stock
- 34
- local calling areas
- Free
- porting, any volume
Find your South Dakota number
These are real numbers available right now. Pick a town to narrow it down, or search for a pattern or vanity word.
Showing live inventory
Every number here stays on the open market until someone claims it — we can't hold one for you. We acquire it for your account right after you sign up, subject to availability, and let you know when it's ready.
Your first number comes out of your $25 — $3.50 for the first month, leaving $21.50 to spend on calls. Nothing to pay, no card.
Doing business by phone in South Dakota
All of South Dakota is area code 605. Sioux Falls is a regional center for banking, credit cards and healthcare, and Rapid City is the gateway to the Black Hills and Mount Rushmore. Farm and ranch country fills the long distances between them.
- Capital
- Pierre
- Largest metros
- Sioux Falls, Rapid City, Aberdeen, Brookings
- Time zone
- Central (west river is Mountain)
- Area codes with stock
- 605
- Inventory checked
- November 4, 2026
South Dakota is one area code: 605
Every South Dakota number shares 605, so the town you pick is what makes it local.
South Dakota towns with the most numbers
Tap a town to see its numbers. Every other town in South Dakota is in the full search.
Sell phone service to South Dakota businesses under your own name
SimuWave is the carrier behind it. You brand it, price it and own the customer, and we handle the numbers, the network, E911 and the paperwork. Same published rates in every state.
South Dakota phone numbers: common questions
What area codes can I get in South Dakota?
Right now we have numbers in area code: 605. Stock changes daily, so search for the exact town you want.
Can I get a number in a specific South Dakota town?
Yes. Numbers are tied to a local calling area, so pick the town your customers are in and the number reads as local to them. Rapid City, North Sioux City, De Smet have the deepest stock right now. Search above, or open the full search with every town in South Dakota.
Can I keep my existing South Dakota business number?
Yes. Porting is free, in any volume. Keep the number your customers already know and point it at SimuWave. It can ring desk phones and cell phones at the same time.
How fast can a South Dakota number be working?
A new number is live in minutes: choose it, attach a call flow, and it rings. Ports take longer because the current carrier has to release the number, and the number keeps working on the old service until the port completes.
What time zone should I set for South Dakota business hours?
South Dakota spans more than one time zone: Central (west river is Mountain). Call flows can route by business hours, so set the hours for each region you serve.
States next to South Dakota
Photo: Badlands National Park, by Martin Kraft (Wikimedia Commons), CC BY-SA 3.0. Resized.