Residential delivery area · South Dakota
ZIP Code 57369: Platte, SD
ZIP code 57369 uses the postal name Platte, South Dakota and lies mostly in Charles Mix County (74% of its land), reaching into Brule County and Douglas County (Census 2020 ZIP-county file). About 2,600 people live there (Census Bureau, ACS 2020-2024). Median household income is $78,100 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Bijou Hills (1%), Platte (under 1%), Cedar Grove Colony (under 1%) and Platte Colony (under 1%); 98% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Platte · its only residential ZIP
- County
- Charles Mix County (74%); Brule County (23%); Douglas County (2%)
- Census places
- Bijou Hills (1%) census-designated place; Platte (under 1%); Cedar Grove Colony (under 1%) census-designated place; Platte Colony (under 1%) census-designated place
- House district
- SD at large 119th Congress
- State
- South Dakota
- Time zone
- Central
- Land area
- 452.4 sq mi · 6 people per sq mi
Where is ZIP code 57369?
57369 centers on 43.421°, -98.953° and covers 452.4 square miles of land plus 25.6 of water. It borders 10 ZIP codes: 57344, 57342, 57523, 57317, 57383, 57533, 57355, 57328, 57370, 57325.
The map draws ZIP code areas only. For the streets inside 57369, 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 57369 compare with the rest of Charles Mix County?
| Measure | 57369 | In Charles Mix County | In SD |
|---|---|---|---|
| People (ACS 2020-2024) | 2,630 | 2nd of 10 | 53rd of 375 |
| Median household income | $78k | 1st of 3 | 48th of 107 |
| Median home value | $237k | 1st of 4 | 50th of 109 |
Its median household income is higher than in 59% of U.S. residential ZIP codes, and it is denser than 12% 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 57369?
The 2020 Census counted 2,685 people in 57369; the ACS, which samples households over 2020-2024, estimates 2,630. Between the 2010 and 2020 censuses its population grew 7.6% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 2,630±268 (90% margin)
- 2020 Census count
- 2,685+7.6% since 2010 (2,495)
- Households
- 960
- Median age
- 35.7
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 57369?
Of the 2,630 people the ACS estimates in 57369, 32.7% are under 18 and 17.5% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (96.8%).
- Under 1832.7%
- 18 to 6449.8%
- 65 and older17.5%
- White, not Hispanic96.8%
- Other or two or more1.7%
- Hispanic or Latino0.8%
- Asian, not Hispanic0.7%
- Black, 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 57369 earn?
Median household income is $78,100 (ACS 2020-2024), the highest of the 3 ranked ZIP codes in Charles Mix County. It is not measurably different from 2015-2019 ($67,484 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $78,100±$10,396
- Income per person
- $31,939
- Below the poverty line
- 18.7%
- Unemployed (of the labor force)
- 0.8%
- Adults 25+ with a bachelor's degree
- 28.7%
- Adjusted gross income per tax return, 2022
- $84,6171,100 returns; wages 47% 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 57369?
FHFA's house price index for 57369, built from repeat sales and appraisals of the same homes, rose 91% from 2015 to 2025 and rose 62% from 2020 to 2025.
- Median home value (owners' estimate)
- $237,400
- Median gross rent
- $870
- Homes owned by their occupants
- 79.1%
- Housing units
- 1,075
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 57369?
148 business establishments had a location in this ZIP code in 2023, 13 more than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade24
- Construction20
- Other services (except public administration)20
- Accommodation and food services14
- Finance and insurance12
- Wholesale trade10
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 57369?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 57344 | Harrison | 39 | – | 16.9 mi |
| 57342 | Geddes | 393 | $75k | 17.6 mi |
| 57523 | Burke | 1,041 | $69k | 18.6 mi |
| 57317 | Bonesteel | 573 | $51k | 19.2 mi |
| 57383 | White Lake | 899 | $63k | 23.8 mi |
| 57533 | Gregory | 1,674 | $59k | 24.0 mi |
| 57355 | Kimball | 1,120 | $63k | 25.1 mi |
| 57328 | Corsica | 1,290 | $87k | 25.8 mi |
| 57370 | Pukwana | 894 | $59k | 29.4 mi |
| 57325 | Chamberlain | 3,335 | $80k | 33.8 mi |
| 57364 | New Holland | 4 | – | 16.8 mi (near) |
| 57538 | Herrick | 236 | $47k | 23.1 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.