ZIP Code 57750 - Interior South Dakota
Overview
ZIP Code 57750 is located in Interior South Dakota. Portions of 57750 are also in Interior Township and Castle Butte Township and Interior (town). 57750 is primarily within Jackson County, with some portions in Pennington County. Regionally, 57750 is located in the Rapid City Area.
ZIP Code 57750 Quick Stats
| ZIP Code Name | Interior |
| Primary County | Jackson County |
| ZIP Code Type | Standard |
| Population (2022) | 197 |
| Area Code(s) | 605 |
| Current Time | MDT |
ZIP Code 57750 Map
57750 Demographics
The majority race/ethnicity residing in 57750 is Native American. The majority race/ethnicity attending public schools in 57750 is Native American. The current unemployment level in 57750 is 2.2%.
| Population | 197 |
| Population Growth Rate | -54.58% |
| Population Density | 2 People per Square Mile |
| Total Households | 129 |
| Average Adjusted Gross Income (2021) | $121,430 |
| Current Unemployment Rate (May 2026) | 2.2% |
| Sales Tax Rate (2025) | 8.4% |
| Majority Race/Ethnicity | Native American - 50% |
| Public School Majority Race/Ethnicity | Native American - 58.62% |
57750 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 57 | 50% |
| Black | 0 | 0% |
| Hispanic | 0 | 0% |
| Asian | 0 | 0% |
| Native American | 57 | 50% |
| Hawaiian/Pac. Islander | 0 | 0% |
57750 Public School Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 11 | 37.93% |
| Black | 0 | 0% |
| Hispanic | 1 | 3.45% |
| Asian | 0 | 0% |
| Native American | 17 | 58.62% |
| Hawaiian/Pac. Islander | 0 | 0% |
57750 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 26 | 14.05% |
| Bachelor Degree | 26 | 14.05% |
| High School Diploma | 58 | 31.35% |
| No High School Diploma | 9 | 4.86% |
| GED or Alternate | 7 | 3.78% |
| 1 or More Years of College | 35 | 18.92% |
| Associates Degree | 23 | 12.43% |
| Masters Degree | 0 | 0% |
| Professional Degree | 1 | 0.54% |
| Doctorate Degree | 0 | 0% |
57750 Geography
| Coordinates | 43.75531769, -101.90877533 |
| Adjacent ZIP Codes | |
| Cities/Towns in 57750 | |
| Region | Rapid City Area |
| Metropolitan/Micropolitan Stat Area | Rapid City, SD |
| Time Zone | Mountain Daylight Time |
| IANA Timezone | America/Denver |
| Area | 109 Square Miles |
57750 Schools
| School Districts in 57750 |
57750 Weather and Climate Data
| Plant Hardiness Zone | Zone 5a: -20F to -15F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | October 1 - 10 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | May 1 - 10 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | BSk - Cold Semi-Arid Climate | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 43h - White River Badlands | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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