What ZIP codes does South Dakota use for mail and package delivery?

South Dakota (SD) operates within the 5-digit ZIP prefix range 570xx–577xx, covering numeric postal codes from 57001 – 57799. Mail routed to state capital Pierre and key regional centers such as Sioux Falls, Rapid City, Aberdeen adheres to these official USPS boundaries.

Which telephone area codes are valid for South Dakota?

South Dakota is served by a single statewide area code: 605. Because South Dakota operates under a single numbering plan area (NPA), every valid South Dakota phone number begins with 605 — there are no regional sub-assignments to account for in test data. Synthetic telephone numbers generated for South Dakota strictly use area code 605 with verified local exchanges to match authentic state dial plans.

How many counties are in South Dakota?

South Dakota is divided into 66 counties, including major administrative regions such as Minnehaha, Pennington, Lincoln, Brown. Generated street addresses reflect these authentic jurisdictional subdivisions and their corresponding postal distribution points.

What postal formatting conventions and addressing quirks are unique to South Dakota?

Single statewide 605 area code with West River vs. East River geographic separation across the Missouri River. National hub for traveler and full-time RVer mail-forwarding addresses (e.g., Box Elder and Sioux Falls residency services) generating high-volume PMB / CMRA box numbers. All addresses generated on this platform format secondary unit designators (Apt, Ste, Fl) and street suffixes according to USPS CASS standards.

Are the South Dakota addresses generated on this page real places?

No. All street numbers, recipient names, and telephone numbers generated for South Dakota are entirely synthetic and randomized for software testing, database seed scripts, and form validation. While they use authentic South Dakota ZIP codes (570xx–577xx), real city names (Sioux Falls, Rapid City), and verified area codes (605), they do not correspond to real individuals or private residences.

Random South Dakota Address Generator

South Dakota ZIP codes span the 570xx–577xx range (57001 – 57799) across 66 counties with 1 active telephone area code (605).

Generate a realistic, USPS Publication 28-compliant random South Dakota address with authentic postal routing, real ZIP codes, and local area codes. Featuring verified ZIP prefix coverage across 570xx–577xx, realistic street grids from Sioux Falls and Rapid City, official area codes (605), and accurate county assignments. Engineered specifically for QA automation, form validation, and software testing.

Official South Dakota Postal & Geographic Reference Specifications

Geographic & Postal Parameter	Official State Specification	Standardization Reference
Postal State Abbreviation	SD	USPS Publication 28 & ISO 3166-2:US
5-Digit ZIP Prefix Range	570xx–577xx	USPS Sectional Center Facilities (SCFs)
5-Digit ZIP Numeric Span	`57001 – 57799`	Lowest to highest active postal delivery codes
Administrative Jurisdictions	66 Total Counties	US Census Bureau regional boundaries
Active Area Codes (NANPA)	`605` (1 total)	North American Numbering Plan Administrator
Capital & Distribution Centers	Pierre (Capital), Sioux Falls, Rapid City, Aberdeen	Primary municipal carrier distribution hubs
Primary Time Zone	Central Time (America/Chicago, UTC-6 / UTC-5 DST)	Regional postal dispatch & timestamp alignment
Authoritative Validation Source	South Dakota Public Utilities Commission & NANPA	Official state regulatory authority

South Dakota Postal Geography & Key Cities

State Capital: Pierre | Postal Code: SD | Total Counties: 66 Counties | ZIP Prefix Range: 570xx–577xx

Verified Data Authority: South Dakota Public Utilities Commission & NANPA

Major municipal distribution centers:

Sioux Falls
Rapid City
Aberdeen
Brookings
Watertown

Key Counties & Administrative Jurisdictions

County boundaries dictate local sales tax jurisdictions and carrier route groupings across South Dakota:

Minnehaha County
Pennington County
Lincoln County
Brown County

Real South Dakota Area Codes (SD)

1 active numbering plan area (NPA) serving 66 jurisdictions across South Dakota.

Active North American Numbering Plan area codes: 605

Postal Delivery Standards & Format Nuances in South Dakota

Single statewide 605 area code with West River vs. East River geographic separation across the Missouri River.
National hub for traveler and full-time RVer mail-forwarding addresses (e.g., Box Elder and Sioux Falls residency services) generating high-volume PMB / CMRA box numbers.

Standard USPS Publication 28 Test Examples for South Dakota

Residential Delivery Point:
100 Main St, Apt 4B Sioux Falls, SD 57103-1204

Commercial / Multi-Unit Delivery Point:
South Dakota Logistics & Software Corp 500 Enterprise Way, Suite 300 Rapid City, SD 57701-4810

Frequently Asked Questions about South Dakota Addresses

What ZIP codes does South Dakota use for mail and package delivery?: South Dakota (SD) operates within the 5-digit ZIP prefix range 570xx–577xx, covering numeric postal codes from 57001 – 57799. Mail routed to state capital Pierre and key regional centers such as Sioux Falls, Rapid City, Aberdeen adheres to these official USPS boundaries.
Which telephone area codes are valid for South Dakota?: South Dakota is served by a single statewide area code: 605. Because South Dakota operates under a single numbering plan area (NPA), every valid South Dakota phone number begins with 605 — there are no regional sub-assignments to account for in test data. Synthetic telephone numbers generated for South Dakota strictly use area code 605 with verified local exchanges to match authentic state dial plans.
How many counties are in South Dakota?: South Dakota is divided into 66 counties, including major administrative regions such as Minnehaha, Pennington, Lincoln, Brown. Generated street addresses reflect these authentic jurisdictional subdivisions and their corresponding postal distribution points.
What postal formatting conventions and addressing quirks are unique to South Dakota?: Single statewide 605 area code with West River vs. East River geographic separation across the Missouri River. National hub for traveler and full-time RVer mail-forwarding addresses (e.g., Box Elder and Sioux Falls residency services) generating high-volume PMB / CMRA box numbers. All addresses generated on this platform format secondary unit designators (Apt, Ste, Fl) and street suffixes according to USPS CASS standards.
Are the South Dakota addresses generated on this page real places?: No. All street numbers, recipient names, and telephone numbers generated for South Dakota are entirely synthetic and randomized for software testing, database seed scripts, and form validation. While they use authentic South Dakota ZIP codes (570xx–577xx), real city names (Sioux Falls, Rapid City), and verified area codes (605), they do not correspond to real individuals or private residences.

Nearby & Bordering States

Explore test address generators for states sharing a geographic border with SD:

South Dakota ZIP Prefixes and Sectional Center Facilities

Mail addressed to South Dakota is sorted through the processing facilities below before local delivery. The first three digits of a ZIP code identify which one, so the prefix alone places an address within the state.

ZIP prefix	Sectional Center Facility	County
571xx	Sioux Falls	Minnehaha County
577xx	Rapid City	Pennington County

These 2 prefixes cover the 570xx–577xx range. Look up any ZIP prefix to see its facility and generate valid ZIP codes inside it.