Residential delivery area · South Dakota
ZIP Code 57401: Aberdeen, SD
ZIP code 57401 uses the postal name Aberdeen, South Dakota and lies entirely in Brown County (Census 2020 ZIP-county file). About 32,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $68,835 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Aberdeen (6%) and Prairiewood Village (under 1%); 94% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Aberdeen · its only residential ZIP
- County
- Brown County
- Census places
- Aberdeen (6%); Prairiewood Village (under 1%) census-designated place
- Micro area
- Aberdeen, SD
- House district
- SD at large 119th Congress
- State
- South Dakota
- Time zone
- Central
- Land area
- 278.8 sq mi · 115 people per sq mi
- PO Box ZIPs
- 57402 also use the name Aberdeen
Where is ZIP code 57401?
57401 centers on 45.482°, -98.533° and covers 278.8 square miles of land plus 1.7 of water. It borders 8 ZIP codes: 57427, 57479, 57481, 57433, 57460, 57474, 57451, 57445.
The map draws ZIP code areas only. For the streets inside 57401, 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 57401 compare with the rest of Brown County?
| Measure | 57401 | In Brown County | In SD |
|---|---|---|---|
| People (ACS 2020-2024) | 31,939 | 1st of 20 | 6th of 375 |
| Median household income | $69k | 2nd of 2 | 75th of 107 |
| Median home value | $226k | 1st of 3 | 60th of 109 |
Its median household income is higher than in 45% of U.S. residential ZIP codes, and it is denser than 56% 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 57401?
The 2020 Census counted 32,275 people in 57401; the ACS, which samples households over 2020-2024, estimates 31,939. Between the 2010 and 2020 censuses its population grew 7.4% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 31,939
- 2020 Census count
- 32,275+7.4% since 2010 (30,061)
- Households
- 13,894
- Median age
- 37.2
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 57401?
Of the 31,939 people the ACS estimates in 57401, 22.8% are under 18 and 17.4% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (82.7%).
- Under 1822.8%
- 18 to 6459.9%
- 65 and older17.4%
- White, not Hispanic82.7%
- Other or two or more7.2%
- Hispanic or Latino5.2%
- Asian, not Hispanic3.3%
- Black, not Hispanic1.5%
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 57401 earn?
Median household income is $68,835 (ACS 2020-2024). It is not measurably different from 2015-2019 ($69,050 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $68,835
- Income per person
- $40,078
- Below the poverty line
- 13.1%
- Unemployed (of the labor force)
- 3.4%
- Adults 25+ with a bachelor's degree
- 35.6%
- Adjusted gross income per tax return, 2022
- $84,67515,230 returns; wages 60% 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 57401?
FHFA's house price index for 57401, built from repeat sales and appraisals of the same homes, rose 54% from 2015 to 2025 and rose 35% from 2020 to 2025, and moved +1.5% in 2025.
- Median home value (owners' estimate)
- $226,200
- Median gross rent
- $766
- Homes owned by their occupants
- 64.7%
- Housing units
- 15,182
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 57401?
1,050 business establishments had a location in this ZIP code in 2023, 8 more than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade142
- Construction126
- Health care and social assistance107
- Other services (except public administration)104
- Accommodation and food services99
- Finance and insurance82
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 57401?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 57427 | Bath | 384 | $84k | 10.4 mi |
| 57479 | Warner | 625 | $102k | 13.1 mi |
| 57481 | Westport | 271 | $68k | 14.4 mi |
| 57433 | Columbia | 318 | $50k | 14.9 mi |
| 57460 | Mansfield | 257 | $140k | 15.5 mi |
| 57474 | Stratford | 237 | $101k | 18.0 mi |
| 57451 | Ipswich | 2,485 | $86k | 19.8 mi |
| 57445 | Groton | 2,072 | $85k | 20.3 mi |
| 57426 | Barnard | 42 | $79k | 17.5 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 Aberdeen?
1 more ZIP code carries the postal name Aberdeen, 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 |
|---|---|
| 57402 | Brown 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.