Alcester, SD ZIP Codes, Area Codes and Address Format

City guides  |  July 18, 2026  |  2 min read

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

State

South Dakota (SD)

County

Union County

Standard ZIP codes

1

Time zone

Central

Alcester ZIP codes

These are the standard delivery ZIP codes for Alcester. The city has 1 ZIP codes in total when PO Box and unique codes are included.

• 57001

Area codes in Alcester

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

Sample Alcester 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 Alcester

• End the address with ALCESTER, 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. Alcester has 1 codes, so the city name alone is not enough.

More South Dakota cities

Agar, Alexandria, Sioux Falls, Rapid City, Allen, or see all South Dakota cities.