County ZIP codes · South Dakota · FIPS 46025
Clark County, SD ZIP Codes
Clark County, South Dakota has 13 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 6 of the residential ones lie mainly in Clark County and 7 mainly in a neighboring county; 9 cross the county line. Median household income ranges from $66,875 in 57225 (Clark) to $73,988 in 57221 (Bryant) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Clark County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
They carry 13 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 13 residential ZIP codes in Clark County
6 ZIP codes lie mainly in Clark County; 7 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 57225 | Clark | 1,833 | 6 | $67k | $155k | 100% |
| 57278 | Willow Lake | 1,011 | 6 | $70k | $220k | 100% |
| 57258 | Raymond | 510 | 4 | $58k | – | 93% |
| 57271 | Vienna | 246 | 4 | $86k | $308k | 83% |
| 57217 | Bradley | 142 | 2 | $64k | $95k | 100% |
| 57236 | Garden City | 91 | 2 | $84k | $63k | 100% |
Partly in Clark County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 57272 | Wallace | 201 | 5 | $84k | $89k | 39% |
| 57322 | Carpenter | 378 | 2 | $72k | $248k | 36% |
| 57221 | Bryant | 1,158 | 10 | $74k | $227k | 27% |
| 57434 | Conde | 506 | 2 | $73k | – | 18% |
| 57243 | Henry | 549 | 5 | $49k | $118k | 11% |
| 57274 | Webster | 2,621 | 7 | $68k | $173k | 7% |
| 57353 | Iroquois | 812 | 3 | $76k | $139k | 3% |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
9 ZIP codes of Clark County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Clark | Elsewhere |
|---|---|---|
| 57274 | 7% | Day County93% |
| 57221 | 27% | Hamlin County73% |
| 57353 | 3% | Kingsbury County56%; Beadle County41% |
| 57243 | 11% | Codington County87%; Hamlin County2% |
| 57258 | 93% | Spink County7% |
| 57434 | 18% | Spink County56%; Brown County17%; Day County9% |
| 57322 | 36% | Beadle County44%; Spink County20% |
| 57271 | 83% | Hamlin County17% |
| 57272 | 39% | Codington County61% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
Which first three digits do Clark County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Clark County's ZIP codes use 3 prefixes: 572, 573 and 574.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 572 | Dakota Central, SD (SCF 572) | 10 | 56 |
| 573 | Dakota Central, SD (SCF 572) | 2 | 62 |
| 574 | Dakota Central, SD (SCF 572) | 1 | 50 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.