Residential delivery area · South Dakota
ZIP Code 57745: Hill City, SD
ZIP code 57745 uses the postal name Hill City, South Dakota and lies entirely in Pennington County (Census 2020 ZIP-county file). About 1,900 people live there (Census Bureau, ACS 2020-2024). Median household income is $88,194 (Census Bureau, ACS 2020-2024). By Census place, under 1% of its land lies in Hill City; more than 99% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2024
- ZBP2023
- IRS2022
- Town
- Hill City · its only residential ZIP
- County
- Pennington County
- Census places
- Hill City
- Metro area
- Rapid City, SD
- House district
- SD at large 119th Congress
- State
- South Dakota
- Time zone
- Mountain
- Land area
- 385.0 sq mi · 5 people per sq mi
Where is ZIP code 57745?
57745 centers on 44.013°, -103.786° and covers 385.0 square miles of land plus 0.6 of water. It borders 6 ZIP codes: 57754, 57702, 57751, 57730, 57732, 82701.
The map draws ZIP code areas only. For the streets inside 57745, 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 57745 compare with the rest of Pennington County?
| Measure | 57745 | In Pennington County | In SD |
|---|---|---|---|
| People (ACS 2020-2024) | 1,894 | 10th of 20 | 73rd of 375 |
| Median household income | $88k | 4th of 9 | 28th of 107 |
| Median home value | $344k | 4th of 11 | 14th of 109 |
Its median household income is higher than in 71% of U.S. residential ZIP codes, and it is denser than 11% 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 57745?
The 2020 Census counted 2,078 people in 57745; the ACS, which samples households over 2020-2024, estimates 1,894. Between the 2010 and 2020 censuses its population fell 1.5% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 1,894±402 (90% margin)
- 2020 Census count
- 2,078−1.5% since 2010 (2,109)
- Households
- 660
- Median age
- 40.9
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 57745?
Of the 1,894 people the ACS estimates in 57745, 30.4% are under 18 and 16.8% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (88.6%).
- Under 1830.4%
- 18 to 6452.8%
- 65 and older16.8%
- White, not Hispanic88.6%
- Other or two or more7.8%
- Hispanic or Latino3.0%
- Asian, not Hispanic0.6%
- 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 57745 earn?
Median household income is $88,194 (ACS 2020-2024), the 4th highest of the 9 ranked ZIP codes in Pennington County. It is not measurably different from 2015-2019 ($83,248 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $88,194±$21,402
- Income per person
- $40,454
- Below the poverty line
- 3.8%
- Unemployed (of the labor force)
- 0.0%
- Adults 25+ with a bachelor's degree
- 39.1%
- Adjusted gross income per tax return, 2022
- $98,2971,200 returns; wages 40% 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 57745?
- Median home value (owners' estimate)
- $343,900
- Median gross rent
- $1,196
- Homes owned by their occupants
- 81.8%
- Housing units
- 991
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 57745?
126 business establishments had a location in this ZIP code in 2023, 7 more than in 2018; the most are in accommodation and food services (ZIP Code Business Patterns).
- Accommodation and food services33
- Retail trade28
- Construction19
- Real estate and rental and leasing9
- Other services (except public administration)8
- Finance and insurance5
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 57745?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 57754 | Lead | 3,749 | $66k | 17.5 mi |
| 57702 | Rapid City | 35,595 | $92k | 18.4 mi |
| 57751 | Keystone | 893 | $98k | 20.4 mi |
| 57730 | Custer | 5,596 | $84k | 21.0 mi |
| 57732 | Deadwood | 1,714 | $44k | 22.3 mi |
| 82701 | Newcastle, WY | 5,459 | $91k | 40.1 mi |
| 57759 | Nemo | 398 | $76k | 18.7 mi (near) |
| 57718 | Black Hawk | 7,937 | $84k | 23.4 mi (near) |
| 57769 | Piedmont | 4,029 | $94k | 29.4 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.