Plain

County ZIP codes · South Dakota · FIPS 46057

Hamlin County, SD ZIP Codes

Hamlin County, South Dakota has 10 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 5 of the residential ones lie mainly in Hamlin County and 5 mainly in a neighboring county; 9 cross the county line. Median household income ranges from $73,988 in 57221 (Bryant) to $96,364 in 57248 (Lake Norden) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Hamlin County?

57221 · Bryant: $74k57223 · Castlewood: $92k57226 · Clear Lake: $83k57234 · Estelline: $82k57238 · Goodwin: $66k57241 · Hayti: $86k57242 · Hazel: $114k57243 · Henry: $49k57248 · Lake Norden: $96k57271 · Vienna: $86k5722657243572235723457221572415724857238572425727157221 · Bryant: $74k57223 · Castlewood: $92k57226 · Clear Lake: $83k57234 · Estelline: $82k57238 · Goodwin: $66k57241 · Hayti: $86k57242 · Hazel: $114k57243 · Henry: $49k57248 · Lake Norden: $96k57271 · Vienna: $86k5722657243572235723457221572415724857238572425727157221 · Bryant: $74k57223 · Castlewood: $92k57226 · Clear Lake: $83k57234 · Estelline: $82k57238 · Goodwin: $66k57241 · Hayti: $86k57242 · Hazel: $114k57243 · Henry: $49k57248 · Lake Norden: $96k57271 · Vienna: $86k57226572435722357234572215724157248572385724257271
The residential ZIP codes of Hamlin County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024).<$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $82,358 and $92,424.

They carry 10 postal town names.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 10 residential ZIP codes in Hamlin County

5 ZIP codes lie mainly in Hamlin County; 5 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Hamlin County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
57223 Castlewood 1,429 11 $92k $237k 98%
57248 Lake Norden 1,295 19 $96k $293k 81%
57221 Bryant 1,158 10 $74k $227k 73%
57241 Hayti 936 9 $86k $123k 100%
57242 Hazel 320 4 $114k $177k 80%

Partly in Hamlin County

Residential ZIP codes mainly in another county that reach at least 1% into Hamlin County, by their share here
In this county
57234 Estelline 1,339 13 $82k $173k 43%
57271 Vienna 246 4 $86k $308k 17%
57238 Goodwin 315 4 $66k $226k 5%
57226 Clear Lake 1,953 10 $83k $206k 4%
57243 Henry 549 5 $49k $118k 2%

Download the 10 ZIP codes as CSV

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 Hamlin County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Hamlin County and in the neighboring counties
ZIPIn HamlinElsewhere
572264%Deuel County96%
5722398%Deuel County2%
5723443%Deuel County50%; Brookings County6%
5724881%Kingsbury County19%
5722173%Clark County27%
572432%Codington County87%; Clark County11%
5724280%Codington County20%
572385%Deuel County63%; Codington County32%
5727117%Clark County83%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

Which first three digits do Hamlin County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Hamlin County starts with 572.

Three-digit prefixes of Hamlin County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Hamlin County's
PrefixSectional centerHereAll codes
572Dakota Central, SD (SCF 572)1056

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.