ZIP Code 57779 - Saint Onge South Dakota
Overview
ZIP Code 57779 is located in Saint Onge South Dakota. Portions of 57779 are also in St. Onge and Spearfish and St. Onge Township and North Lawrence and West Butte. 57779 is primarily within Lawrence County, with some portions in Butte County. Regionally, 57779 is located in the Rapid City Area.
ZIP Code 57779 Quick Stats
| ZIP Code Name | Saint Onge |
| Primary County | Lawrence County |
| ZIP Code Type | Standard |
| Population (2022) | 267 |
| Area Code(s) | 605 |
| Current Time | MDT |
ZIP Code 57779 Map
57779 Demographics
The majority race/ethnicity residing in 57779 is White. The current unemployment level in 57779 is 2.2%.
| Population | 267 |
| Population Growth Rate | 152.83% |
| Population Density | 6 People per Square Mile |
| Total Households | 147 |
| Average Adjusted Gross Income (2021) | $239,630 |
| Current Unemployment Rate (May 2026) | 2.2% |
| Sales Tax Rate (2025) | 6.2% |
| Majority Race/Ethnicity | White - 95.37% |
57779 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 268 | 95.37% |
| Black | 0 | 0% |
| Hispanic | 13 | 4.63% |
| Asian | 0 | 0% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
57779 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 0 | 0% |
| Bachelor Degree | 77 | 43.5% |
| High School Diploma | 74 | 41.81% |
| No High School Diploma | 0 | 0% |
| GED or Alternate | 0 | 0% |
| 1 or More Years of College | 26 | 14.69% |
| Associates Degree | 0 | 0% |
| Masters Degree | 0 | 0% |
| Professional Degree | 0 | 0% |
| Doctorate Degree | 0 | 0% |
57779 Geography
| Coordinates | 44.55467987, -103.75644684 |
| Adjacent ZIP Codes | |
| Cities/Towns in 57779 | |
| Region | Rapid City Area |
| Metropolitan/Micropolitan Stat Area | Spearfish, SD |
| Time Zone | Mountain Daylight Time |
| IANA Timezone | America/Denver |
| Area | 44 Square Miles |
57779 Schools
| School Districts in 57779 |
57779 Weather and Climate Data
| Plant Hardiness Zone | Zone 5a: -20F to -15F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | September 21 - 31 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | May 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | BSk - Cold Semi-Arid Climate | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 17a - Black Hills Plateau | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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