Residential delivery area · South Dakota
ZIP Code 57521: Belvidere, SD
ZIP code 57521 uses the postal name Belvidere, South Dakota and lies mostly in Mellette County (50% of its land) with the rest in Jackson County (Census 2020 ZIP-county file). About 310 people live there (Census Bureau, ACS 2020-2024). Median household income is $57,813 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Corn Creek (under 1%) and Belvidere (under 1%); more than 99% is outside any Census place.
- ACS2020-24
- Census2020
- Town
- Belvidere · its only residential ZIP
- County
- Mellette County (50%); Jackson County (50%)
- Census places
- Corn Creek (under 1%) census-designated place; Belvidere (under 1%)
- House district
- SD at large 119th Congress
- State
- South Dakota
- Time zone
- Mountain
- Land area
- 428.0 sq mi · under 1 person per sq mi
Where is ZIP code 57521?
57521 centers on 43.792°, -101.183° and covers 428.0 square miles of land plus 2.3 of water. It borders 7 ZIP codes: 57562, 57543, 57547, 57560, 57579, 57552, 57567.
The map draws ZIP code areas only. For the streets inside 57521, 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 57521 compare with the rest of Mellette County?
| Measure | 57521 | In Mellette County | In SD |
|---|---|---|---|
| People (ACS 2020-2024) | 314 | 5th of 6 | 261st of 375 |
| Median household income | $58k | not ranked | not ranked |
| Median home value | – | not ranked | not ranked |
57521's income and home value are not ranked: it has fewer than 1,000 residents (314). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 4% of 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 57521?
The 2020 Census counted 240 people in 57521; the ACS, which samples households over 2020-2024, estimates 314. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 314±172 (90% margin)
- 2020 Census count
- 240
- Households
- 65
- Median age
- 30.0
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 57521?
Of the 314 people the ACS estimates in 57521, 44.3% are under 18 and 17.2% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (56.7%), then Other or two or more (43.3%).
- Under 1844.3%
- 18 to 6438.5%
- 65 and older17.2%
- White, not Hispanic56.7%
- Other or two or more43.3%
- Hispanic or Latino0.0%
- Black, not Hispanic0.0%
- 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 57521 earn?
Median household income is $57,813 (ACS 2020-2024).
- Median household income
- $57,813±$22,665
- Income per person
- $28,092
- Below the poverty line
- 19.5%
- Unemployed (of the labor force)
- 0.0%
- Adults 25+ with a bachelor's degree
- 25.1%
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 57521?
- Median home value (owners' estimate)
- –
- Median gross rent
- –
- Homes owned by their occupants
- 52.3%
- Housing units
- 105
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001).
Which ZIP codes are next to 57521?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 57562 | Okaton | 89 | – | 13.3 mi |
| 57543 | Kadoka | 721 | $36k | 17.2 mi |
| 57547 | Long Valley | 383 | $79k | 24.1 mi |
| 57560 | Norris | 391 | – | 24.6 mi |
| 57579 | White River | 1,277 | $57k | 24.7 mi |
| 57552 | Midland | 642 | $64k | 32.5 mi |
| 57567 | Philip | 1,056 | $59k | 35.2 mi |
| 57559 | Murdo | 735 | $67k | 24.9 mi (near) |
| 57577 | Wanblee | 940 | $21k | 30.0 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.