Area Code Lookup

Search the U.S. area-code catalog

Enter a 3-digit area code, a U.S. phone number, a supported city, or a state.

397 IN-SERVICE CODES
DATA 07/30/2026

State and territory directory

South Dakota Area Codes

1 in-service code is assigned to South Dakota in the NANPA report dated 07/30/2026.

1 codes shown

Area-code list

605Central / Mountain Time

Major city references

No curated city hub is currently listed; every official in-service code remains available below.

How to use this directory

Select a code to see its time-zone label, in-service date, overlay complex, service type, and current NANPA planning flags. An overlay code can cover the same region as another code, while a split code covers a different region after boundaries change.

Source

Official NPA status data: North American Numbering Plan Administrator (NANPA), file date 07/30/2026.

Last updated: July 23, 2026

Area Code Lookup is a free informational utility. It does not require an account, place advertising cookies, or sell personal information.

Information the tool uses

Lookup text is sent to this site only to return a result. The application does not ask for GPS access, contacts, a phone number owner, or a street address. Recent lookups are stored only in your browser using local storage and can be removed by clearing site data.

Server and network logs

Cloudflare may process ordinary request information needed to deliver and protect the site, such as IP address, request path, browser information, timestamps, and security signals. We do not use that information to identify the owner of a telephone number.

Data accuracy

Area-code status, state or territory, overlay relationships, service type, and in-service dates are derived from the NANPA NPA database. An area code can cover many communities, and a city label is a practical lookup aid rather than proof that a specific number or caller is physically located there.

Acceptable use

You may use the site for lawful informational purposes. Do not interfere with the service, attempt to bypass safeguards, or use automated traffic in a way that degrades access for others.

No warranty

The service is provided “as is.” Numbering plans change, and no result should be treated as emergency, legal, financial, identity, or fraud-verification advice.

Contact

Questions about these terms or privacy practices can be sent to hello@areacodelookup.us.