Rapid City, SD ZIP Codes, Area Codes and Address Format

City guides  |  May 2, 2026  |  2 min read

Looking up ZIP codes or writing an address in Rapid City, South Dakota? Below is a practical reference built from postal data for the city.

State

South Dakota (SD)

County

Pennington County

Standard ZIP codes

3

Time zone

Mountain

Rapid City ZIP codes

These are the standard delivery ZIP codes for Rapid City. The city has 4 ZIP codes in total when PO Box and unique codes are included.

• 57701
• 57702
• 57703

Area codes in Rapid City

Rapid City phone numbers use 605. A single area code keeps local numbers easy to recognize.

Sample Rapid City addresses

The street lines are invented; the city, state and ZIP codes are real. Use them for form testing, mockups and training materials, never for real orders.

How to write an address in Rapid City

• End the address with RAPID CITY, SD and the five-digit ZIP code.
• Put apartment or suite numbers at the end of the street line.
• Use USPS abbreviations such as ST, AVE and BLVD.
• Match the ZIP code to the street. Rapid City has 3 codes, so the city name alone is not enough.

More South Dakota cities

Ashton, Artesian, Agar, Allen, Pierre, or see all South Dakota cities.