ZIP code 57745
Where is ZIP code 57745?
Hill City, South Dakota
Pennington County · Standard ZIP code
ZIP code 57745 belongs to Hill City, South Dakota in Pennington County. 57745 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Mountain Time zone and uses area codes 307 and 605. About 1,894 people live in the 57745 area, where the median household income is $88,194. The closest ZIP codes are 57751 (Keystone, 9.6 mi east), 57702 (Rapid City, 11.8 mi northeast) and 57709 (Rapid City, 16.1 mi northeast).
| ZIP code | 57745 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Hill City |
| Also accepted | Rochford |
| State | South Dakota (SD) |
| County | Pennington County |
| Time zone | Mountain Time · now |
| Area codes | 307, 605 |
| Coordinates | 43.9377, -103.5782 map |
| 3-digit prefix | 577 |
Population and income in 57745
| Population | 1,894 · higher than 81% of South Dakota ZIP codes |
|---|---|
| People per square mile | 5 · higher than 50% of South Dakota ZIP codes |
| Median age | 40.9 years · lower than 54% of South Dakota ZIP codes |
| Men / women | 55% / 45% |
| Median household income | $88,194 · higher than 76% of South Dakota ZIP codes |
| Income per person | $40,454 |
| Below the poverty line | 3.8% |
| Bachelor’s degree or higher | 39% of adults 25+ |
| Median home value | $343,900 · higher than 93% of South Dakota ZIP codes |
| Median rent | $1,196 a month |
| Housing units | 991 |
| Households | 660 (2.78 people on average) |
| Owners / renters | 82% / 18% |
| Land area | 385.04 sq mi (plus 0.56 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 57745. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 57745
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 57751 | Keystone, SD | 9.6 mi E | Standard |
| 57702 | Rapid City, SD | 11.8 mi NE | Standard |
| 57709 | Rapid City, SD | 16.1 mi NE | PO Box only |
| 57759 | Nemo, SD | 18.9 mi N | Standard |
| 57718 | Black Hawk, SD | 19.3 mi NE | Standard |
| 57744 | Hermosa, SD | 20.3 mi SE | Standard |
| 57730 | Custer, SD | 20.8 mi S | Standard |
| 57703 | Rapid City, SD | 21.4 mi E | Standard |
| 57769 | Piedmont, SD | 22.6 mi NE | Standard |
| 57773 | Pringle, SD | 22.8 mi S | PO Box only |
| 57701 | Rapid City, SD | 23.3 mi NE | Standard |
| 57738 | Fairburn, SD | 26.3 mi SE | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 57745 or measure the distance to another ZIP code.
How to address mail to 57745
123 MAIN ST
HILL CITY SD 57745
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts ROCHFORD as the city name for 57745. Avoid Deerfield and Mystic: USPS doesn’t recognize them as the city for this ZIP code. Adding the 4-digit ZIP+4 code (57745-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 57745?
- 57745 is a Hill City, South Dakota ZIP code. Rochford is also accepted as the city name.
- What county is 57745 in?
- ZIP code 57745 is in Pennington County, South Dakota.
- What time zone is ZIP code 57745 in?
- 57745 is in the Mountain Time zone (America/Denver).
- What area code is 57745?
- Phone numbers in ZIP code 57745 use area codes 307 and 605.
- What is the population of ZIP code 57745?
- About 1,894 people live in ZIP code 57745, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 57745?
- The median household income in 57745 is $88,194 a year, higher than 76% of South Dakota ZIP codes.
- What ZIP codes are near 57745?
- The nearest ZIP codes to 57745 are 57751 (Keystone, 9.6 miles), 57702 (Rapid City, 11.8 miles), 57709 (Rapid City, 16.1 miles) and 57759 (Nemo, 18.9 miles).