First three digits · South Dakota
ZIP Codes Starting with
32 ZIP codes start with 576, sorted at the Bismarck, ND (SCF 585) sectional center (USPS labeling list L005, effective October 1, 2026) in South Dakota: 32 residential ZIP codes across 8 counties (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 576 mean?
The first digit, 5, is one of ten national areas (Iowa, Minnesota, Montana, North Dakota, South Dakota and Wisconsin). The first three, 576, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 576 to the Bismarck, ND (SCF 585) facility. The last two digits pick the delivery area. By residents, the largest town names among the 576 ZIP codes are Eagle Butte, Mobridge, McLaughlin, Lemmon, Timber Lake and Faith.
The same facility sorts 5 prefixes, 193 ZIP codes in all: 576, 585, 586, 587, 588.
Where are the 576 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 576
| County | ||||||
|---|---|---|---|---|---|---|
| 57601 | Mobridge | Dewey County | 3,422 | 8 | $66k | $155k |
| 57620 | Bison | Perkins County | 564 | 2 | $91k | $106k |
| 57621 | Bullhead | Corson County | 294 | 96 | $33k | – |
| 57622 | Cherry Creek | Ziebach County | 234 | 3 | – | – |
| 57623 | Dupree | Ziebach County | 902 | 1 | $60k | $87k |
| 57625 | Eagle Butte | Dewey County | 3,775 | 3 | $43k | $68k |
| 57626 | Faith | Perkins County | 979 | 1 | $68k | $125k |
| 57630 | Glencross | Dewey County | 11 | 0 | – | – |
| 57631 | Glenham | Walworth County | 364 | 3 | $57k | $163k |
| 57632 | Herreid | Campbell County | 757 | 4 | $82k | $109k |
| 57633 | Isabel | Corson County | 445 | 1 | $79k | $70k |
| 57634 | Keldron | Corson County | 131 | 1 | $88k | $152k |
| 57636 | Lantry | Dewey County | 104 | 5 | $112k | $109k |
| 57638 | Lemmon | Perkins County | 1,852 | 2 | $59k | $101k |
| 57639 | Little Eagle | Corson County | 290 | 147 | $21k | – |
| 57640 | Lodgepole | Perkins County | 41 | 0 | $250k+ | $338k |
| 57641 | McIntosh | Corson County | 215 | 0 | $84k | $78k |
| 57642 | McLaughlin | Corson County | 1,969 | 3 | $59k | $70k |
| 57644 | Meadow | Perkins County | 388 | 1 | $68k | $229k |
| 57645 | Morristown | Corson County | 184 | 1 | $57k | $52k |
| 57646 | Mound City | Campbell County | 272 | 2 | $101k | $113k |
| 57648 | Pollock | Emmons County | 465 | 2 | $61k | $99k |
| 57649 | Prairie City | Perkins County | 273 | 1 | $85k | – |
| 57650 | Ralph | Harding County | 17 | 0 | – | – |
| 57651 | Reva | Harding County | 191 | 0 | $95k | $213k |
| 57652 | Ridgeview | Dewey County | 265 | 1 | $19k | – |
| 57656 | Timber Lake | Dewey County | 1,000 | 3 | $66k | $86k |
| 57657 | Trail City | Corson County | 247 | 1 | – | $57k |
| 57658 | Wakpala | Corson County | 319 | 5 | $23k | $85k |
| 57659 | Walker | Corson County | 16 | 1 | $103k | – |
| 57660 | Watauga | Corson County | 111 | 1 | $67k | $86k |
| 57661 | Whitehorse | Dewey County | 177 | 6 | $55k | – |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.