Alexandria, SD ZIP Codes, Area Codes and Address Format

City guides  |  August 15, 2026  |  2 min read

Alexandria is one of the busiest mail areas in South Dakota, with 1 standard ZIP codes in Hanson County. Here is everything you need to format a Alexandria address correctly.

State

South Dakota (SD)

County

Hanson County

Standard ZIP codes

1

Time zone

Central

Alexandria ZIP codes

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

• 57311

Area codes in Alexandria

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

Sample Alexandria 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 Alexandria

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

More South Dakota cities

Ashton, Armour, Rapid City, Aberdeen, Sioux Falls, or see all South Dakota cities.