Pick 605 for Sioux Falls or Brookings.
Both sit on the same code as Rapid City, because South Dakota has only the one.
South Dakota has one area code: 605.
Area codes in South Dakota
Get a phone number with the right area code for South Dakota.
605 is the only area code in South Dakota, and it covers the whole state, from Sioux Falls and Rapid City to Aberdeen, Brookings and Watertown.
$0 todayLive in about a minute
South Dakota has one area code.
In the order they opened.
605
605 is the only area code in South Dakota.
605 opened in 1947 and still stands alone in South Dakota.
Pick 605, the one code South Dakota has.
Pick 605 for Rapid City, Aberdeen or Watertown.
No part of the state has been given a code of its own, so these towns all share 605.
People filed 65 FCC complaints about unwanted calls from South Dakota area code in 12 months.
From October 2025 to September 2026, 65 unwanted-call complaints filed with the FCC gave a caller ID number that started with the South Dakota code.
- 65unwanted-call complaints named a South Dakota code
Source: Federal Communications Commission, CGB - Consumer Complaints Data (dataset 3xyp-aqkj), issue "Unwanted Calls", read on November 4, 2026. Caller ID can be faked, so a code shows what appeared on the phone, not where the caller was.
This is how you get a South Dakota number.
- 1
Start your free week.
Every plan begins with 7 days free, and you pay $0 today.
- 2
Type the code you picked.
Open Create a number, type the three digits and give the number a name.
- 3
Hand the number out.
Calls ring the phone you already have, and texts land in your ExpressNumber inbox.
People ask these questions about South Dakota area codes.
More in the full FAQ.
Yes. Rapid City uses 605, like Sioux Falls, Aberdeen, Brookings and Watertown.
No. 605 is the only one.
South Dakota has one area code, 605, in service since 1947, by the numbering administrator's report of October 23, 2026.
South Dakota has one area code, 605, in service since 1947. 605 opened in 1947 and still stands alone in South Dakota.
A local call in South Dakota is dialed with ten digits. The area code is part of every number you give out.
From October 2025 to September 2026, people filed 65 FCC complaints about unwanted calls from numbers that start with a South Dakota code. The only one named was 605 (65). A complaint is one person's report. Caller ID can be faked, so a code shows what appeared on the phone, not where the caller was.
Yes. You type the area code you want when you create a number, and you do not need to live in South Dakota. Calls ring the phone you already have, and texts land in your ExpressNumber inbox.
No. Your numbers are receive-only: they take calls and texts, and they never make them. You answer calls on your own phone, and you cannot reply to a text from the inbox.
You get 7 days free and pay $0 today. After 7 days your plan starts: $9.99 a month for Basic or $29.99 a month for Pro. Cancel before then and you pay nothing.
States next to South Dakota
More area codes
Every fact on this page comes from public numbering records.
The codes, the places and the years are rows of the North American Numbering Plan Administrator's area code database (its report of October 23, 2026), and the complaints are the FCC's own.
Put a South Dakota code on a number you can burn.
Calls ring the phone you already have, and texts land in your ExpressNumber inbox.
Try it free for 7 days