Residential delivery area · South Dakota
ZIP Code 57717: Belle Fourche, SD
ZIP code 57717 uses the postal name Belle Fourche, South Dakota and lies mostly in Butte County (65% of its land), reaching into Crook County, Carter County and Harding County (Census 2020 ZIP-county file). About 9,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $77,689 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Belle Fourche (under 1%) and Fruitdale (0%); more than 99% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Belle Fourche · its only residential ZIP
- County
- Butte County (65%); Crook County (15%); Carter County (10%); Harding County (9%)
- Census places
- Belle Fourche (under 1%); Fruitdale (0%)
- House districts
- SD at large (75%), WY at large (15%), MT-2 (10%) 119th Congress, by share of land
- State
- South Dakota
- Time zone
- Mountain
- Land area
- 1,364.4 sq mi · 7 people per sq mi
Where is ZIP code 57717?
57717 centers on 44.934°, -103.896° and covers 1,364.4 square miles of land plus 13.0 of water. It borders 12 ZIP codes: 57762, 57779, 82710, 57760, 57776, 82712, 57793, 57783, 59319, 59311 and more.
The map draws ZIP code areas only. For the streets inside 57717, 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 57717 compare with the rest of Butte County?
| Measure | 57717 | In Butte County | In SD |
|---|---|---|---|
| People (ACS 2020-2024) | 8,983 | 2nd of 8 | 24th of 375 |
| Median household income | $78k | 2nd of 3 | 49th of 107 |
| Median home value | $249k | 3rd of 3 | 43rd of 109 |
Its median household income is higher than in 59% of U.S. residential ZIP codes, and it is denser than 13% 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 57717?
The 2020 Census counted 8,242 people in 57717; the ACS, which samples households over 2020-2024, estimates 8,983. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 8,983
- 2020 Census count
- 8,242
- Households
- 3,647
- Median age
- 39.2
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 57717?
Of the 8,983 people the ACS estimates in 57717, 24.9% are under 18 and 19.0% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (89.6%).
- Under 1824.9%
- 18 to 6456.1%
- 65 and older19.0%
- White, not Hispanic89.6%
- Other or two or more5.6%
- Hispanic or Latino4.7%
- 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 57717 earn?
Median household income is $77,689 (ACS 2020-2024), the 2nd highest of the 3 ranked ZIP codes in Butte County.
- Median household income
- $77,689±$11,485
- Income per person
- $39,455
- Below the poverty line
- 8.7%
- Unemployed (of the labor force)
- 1.7%
- Adults 25+ with a bachelor's degree
- 19.5%
- Adjusted gross income per tax return, 2022
- $67,9604,050 returns; wages 61% 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 57717?
FHFA's house price index for 57717, built from repeat sales and appraisals of the same homes, rose 96% from 2015 to 2025 and rose 55% from 2020 to 2025, and moved −4.6% in 2025.
- Median home value (owners' estimate)
- $249,200
- Median gross rent
- $973
- Homes owned by their occupants
- 73.2%
- Housing units
- 3,970
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 57717?
330 business establishments had a location in this ZIP code in 2023, 48 more than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade59
- Construction51
- Other services (except public administration)41
- Health care and social assistance31
- Accommodation and food services31
- Professional, scientific, and technical services21
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 57717?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 57762 | Nisland | 512 | $68k | 18.4 mi |
| 57779 | Saint Onge | 347 | – | 26.1 mi |
| 82710 | Aladdin, WY | 246 | $54k | 26.1 mi |
| 57760 | Newell | 966 | $65k | 27.6 mi |
| 57776 | Redig | 0 | – | 28.2 mi |
| 82712 | Beulah, WY | 163 | – | 30.3 mi |
| 57793 | Whitewood | 2,173 | $87k | 32.2 mi |
| 57783 | Spearfish | 17,248 | $75k | 33.0 mi |
| 59319 | Capitol, MT | 40 | – | 35.5 mi |
| 59311 | Alzada, MT | 143 | $88k | 35.6 mi |
| 82720 | Hulett, WY | 995 | $80k | 39.1 mi |
| 57720 | Buffalo | 518 | $79k | 44.3 mi |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.