ZIP Code 57256 - Ortley South Dakota
Overview
ZIP Code 57256 is located in Ortley South Dakota. Portions of 57256 are also in Ortley Township and Blooming Valley Township and Lura Township and Dexter Township and Egeland Township and Ortley (town). 57256 is primarily within Roberts County, with some portions in Grant County and Codington County. Regionally, 57256 is located in the Sioux Falls Area.
ZIP Code 57256 Quick Stats
| ZIP Code Name | Ortley |
| Primary County | Roberts County |
| ZIP Code Type | Standard |
| Population (2022) | 223 |
| Area Code(s) | 605 |
| Current Time | CDT |
ZIP Code 57256 Map
57256 Demographics
57256 can be classified socioeconomically as Lower Middle Class class compared to other ZIP Codes in South Dakota. The majority race/ethnicity residing in 57256 is White. The current unemployment level in 57256 is 2.2%.
| Population | 223 |
| Population Growth Rate | 67.62% |
| Population Density | 3 People per Square Mile |
| Total Households | 53 |
| Percentage High Income Households | 3.8% |
| Median Household Income (2021) | $53,750 |
| Current Unemployment Rate (May 2026) | 2.2% |
| Sales Tax Rate (2025) | 4.2% |
| Majority Race/Ethnicity | White - 100% |
57256 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 174 | 100% |
| Black | 0 | 0% |
| Hispanic | 0 | 0% |
| Asian | 0 | 0% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
57256 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 7 | 10% |
| Bachelor Degree | 15 | 21.43% |
| High School Diploma | 19 | 27.14% |
| No High School Diploma | 0 | 0% |
| GED or Alternate | 1 | 1.43% |
| 1 or More Years of College | 8 | 11.43% |
| Associates Degree | 20 | 28.57% |
| Masters Degree | 0 | 0% |
| Professional Degree | 0 | 0% |
| Doctorate Degree | 0 | 0% |
57256 Geography
| Coordinates | 45.27074051, -97.18185425 |
| Adjacent ZIP Codes | |
| Cities/Towns in 57256 | |
| Region | Sioux Falls Area |
| Metropolitan/Micropolitan Stat Area | Watertown, SD |
| Time Zone | Central Daylight Time |
| IANA Timezone | America/Chicago |
| Area | 79 Square Miles |
57256 Schools
| School Districts in 57256 | |
| Elementary Schools in 57256 | |
| Middle Schools in 57256 | |
| High Schools in 57256 |
57256 Weather and Climate Data
| Plant Hardiness Zone | Zone 4a: -30F to -25F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | September 21 - 31 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | May 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Dfb - Humid Continental Mild Summer, Wet All Year | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 46m - Big Sioux Basin | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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