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County ZIP codes · South Dakota · FIPS 46007

Bennett County, SD ZIP Codes

Bennett County, South Dakota has 7 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 3 of the residential ones lie mainly in Bennett County and 4 mainly in a neighboring county; 5 cross the county line.

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Bennett County?

57551 · Martin: $70k57560 · Norris: –57574 · Tuthill: <$2,50057577 · Wanblee: $21k57714 · Allen: –57716 · Batesland: –57752 · Kyle: $83k5755157752575775756057714577165757457551 · Martin: $70k57560 · Norris: –57574 · Tuthill: <$2,50057577 · Wanblee: $21k57714 · Allen: –57716 · Batesland: –57752 · Kyle: $83k5755157752575775756057714577165757457551 · Martin: $70k57560 · Norris: –57574 · Tuthill: <$2,50057577 · Wanblee: $21k57714 · Allen: –57716 · Batesland: –57752 · Kyle: $83k57551577525757757560577145771657574
The residential ZIP codes of Bennett 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).

All 7 residential ZIP codes in Bennett County

3 ZIP codes lie mainly in Bennett County; 4 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Bennett County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
57551 Martin 2,084 3 $70k $162k 100%
57714 Allen 1,144 7 – $112k 93%
57574 Tuthill 73 0 <$2,500 $262k 100%

Partly in Bennett County

Residential ZIP codes mainly in another county that reach at least 1% into Bennett County, by their share here
In this county
57560 Norris 391 2 – – 25%
57716 Batesland 201 1 – – 8%
57577 Wanblee 940 4 $21k – 4%
57752 Kyle 1,553 4 $83k – 3%

Download the 7 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?

5 ZIP codes of Bennett County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Bennett County and in the neighboring counties
ZIPIn BennettElsewhere
577523%Oglala Lakota County83%; Jackson County14%
5771493%Jackson County7%
575774%Jackson County96%
5756025%Mellette County56%; Jackson County19%
577168%Oglala Lakota County92%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Bennett County's ZIP codes use 2 prefixes: 575 and 577.

Three-digit prefixes of Bennett 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 Bennett County's
PrefixSectional centerHereAll codes
575Dakota Central, SD (SCF 572)443
577Rapid City, SD (SCF 577)358

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