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ZIP CODE TABULATION AREA

57521

South Dakota · 314 residents · 428 sq mi
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ZIP 57521 is a ZIP code of 314 people in Mellette County. The median age is 30.0, younger than the US median of 38.9. There are 1 people per square mile. The foreign-born share is 0%. 52% of homes are owner-occupied. 100% were living in the same home a year earlier.

Population
314
Median income
$57,813
US average: $82,259
Per capita income
$28,092
US average: $44,673
Bachelor's+
25.1%
US average: 35.6%
Land area
428 sq mi
Age, sex & households
Median age
30.0
Under 18
44.3%
Age 65+
17.2%
Male
56.7%
Female
43.3%
Avg household
4.83 people
Race & ethnicity · 2024
2024
White, non-Hispanic56.7%(178)
Black0%(0)
Hispanic / Latino0%(0)
Asian0%(0)
Other43.3%(136)
Diversity Score
61
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Within Mellette County
Income rank vs other ZIPs
LOWEST1ST OF 2HIGHEST
Adjacent ZIPs
57579$56,474
Frequently asked

How many people live in ZIP code 57521?

ZIP code 57521 has about 314 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 57521?

The typical household in ZIP code 57521 earns about $57,813 a year. Half of households make more than that, and half make less.

How educated are people in ZIP code 57521?

About 25.1% of adults age 25 and over in ZIP code 57521 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 57521?

About 19.5% of people in ZIP code 57521 live below the federal poverty line.

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Containing area
Mellette County
Other ZIP codes in Mellette County
ZIP 57579ZIP 57560ZIP 57585

DATA: US CENSUS BUREAU ACS 5-YEAR · ZCTA · UPDATED 2024