Residential delivery area · South Dakota
ZIP Code 57325: Chamberlain, SD
ZIP code 57325 uses the postal name Chamberlain, South Dakota and lies mostly in Brule County (64% of its land) with the rest in Buffalo County (Census 2020 ZIP-county file). About 3,300 people live there (Census Bureau, ACS 2020-2024). Median household income is $80,139 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Chamberlain (2%) and Ola (1%); 97% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Chamberlain · its only residential ZIP
- County
- Brule County (64%); Buffalo County (36%)
- Census places
- Chamberlain (2%); Ola (1%) census-designated place
- House district
- SD at large 119th Congress
- State
- South Dakota
- Time zone
- Central
- Land area
- 286.4 sq mi · 12 people per sq mi
- PO Box ZIPs
- 57326 also use the name Chamberlain
Where is ZIP code 57325?
57325 centers on 43.835°, -99.312° and covers 286.4 square miles of land plus 26.7 of water. It borders 9 ZIP codes: 57365, 57370, 57569, 57341, 57339, 57369, 57533, 57371, 57345.
The map draws ZIP code areas only. For the streets inside 57325, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 57325 compare with the rest of Brule County?
| Measure | 57325 | In Brule County | In SD |
|---|---|---|---|
| People (ACS 2020-2024) | 3,335 | 1st of 6 | 46th of 375 |
| Median household income | $80k | 1st of 2 | 44th of 107 |
| Median home value | $230k | 2nd of 2 | 56th of 109 |
Its median household income is higher than in 62% of U.S. residential ZIP codes, and it is denser than 18% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 57325?
The 2020 Census counted 3,279 people in 57325; the ACS, which samples households over 2020-2024, estimates 3,335. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 3,335
- 2020 Census count
- 3,279
- Households
- 1,186
- Median age
- 39.5
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 57325?
Of the 3,335 people the ACS estimates in 57325, 24.8% are under 18 and 20.9% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (74.8%), then Other or two or more (21.6%).
- Under 1824.8%
- 18 to 6454.3%
- 65 and older20.9%
- White, not Hispanic74.8%
- Other or two or more21.6%
- Hispanic or Latino3.4%
- Black, not Hispanic0.3%
- Asian, not Hispanic0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 57325 earn?
Median household income is $80,139 (ACS 2020-2024).
- Median household income
- $80,139±$12,803
- Income per person
- $37,979
- Below the poverty line
- 9.3%
- Unemployed (of the labor force)
- 3.2%
- Adults 25+ with a bachelor's degree
- 33.8%
- Adjusted gross income per tax return, 2022
- $73,7171,550 returns; wages 58% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 57325?
FHFA's house price index for 57325, built from repeat sales and appraisals of the same homes, rose 60% from 2015 to 2025 and rose 34% from 2020 to 2025, and moved −15.7% in 2025.
- Median home value (owners' estimate)
- $230,300
- Median gross rent
- $818
- Homes owned by their occupants
- 74.9%
- Housing units
- 1,369
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 57325?
163 business establishments had a location in this ZIP code in 2023, 7 fewer than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade31
- Health care and social assistance20
- Construction18
- Accommodation and food services18
- Other services (except public administration)18
- Finance and insurance14
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 57325?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 57365 | Oacoma | 599 | $76k | 5.5 mi |
| 57370 | Pukwana | 894 | $59k | 7.3 mi |
| 57569 | Reliance | 497 | $75k | 12.2 mi |
| 57341 | Gann Valley | 79 | – | 20.4 mi |
| 57339 | Fort Thompson | 1,390 | $46k | 21.5 mi |
| 57369 | Platte | 2,630 | $78k | 33.8 mi |
| 57533 | Gregory | 1,674 | $59k | 33.9 mi |
| 57371 | Ree Heights | 238 | $74k | 41.9 mi |
| 57345 | Highmore | 941 | $76k | 51.8 mi |
| 57355 | Kimball | 1,120 | $63k | 19.3 mi (near) |
| 57534 | Hamill | 130 | $33k | 25.4 mi (near) |
| 57544 | Kennebec | 421 | $79k | 26.7 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.
Which other ZIP codes use the name Chamberlain?
1 more ZIP code carries the postal name Chamberlain, SD without a residential delivery area: PO boxes at the post office, or a single organization with its own ZIP code. The Census Bureau publishes no figures for it.
| ZIP | County |
|---|---|
| 57326 | Brule County |
Source: GeoNames postal codes (CC BY 4.0), downloaded 2026-10-09; a ZIP code with no Census ZCTA has no residential delivery area.