Saint Onge, South Dakota

Saint Onge: unincorporated community in South Dakota

About

Saint Onge is a city located in the county of Lawrence in the U.S. state of South Dakota. Its population at the 2010 census was 339 and a population density of 97 people per km². After 10 years in 2020 city had an estimated population of 364 inhabitants.

Quick Facts about Saint Onge

Population 364 (2020)
Country United States of America
State South Dakota (United States)
County Lawrence County
Area 3.48 km2
Latitude & Longitude 44.5467,-103.7210
Time Zone America/Denver
Local time 00:21:19 (18th April 2026)
Postal code 57779
Density 105 Pop. per km² as of 2020
Population growth 6.87% (2010-2020)
Weather 24℉ Slight Chance Snow Showers then Mostly Cloudy 7-days weather

Geography

Saint Onge is located at 44°32'48"N 103°43'16"W (44.5466500, -103.7210300).

Saint Onge map

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Weather

24°F
Slight Chance Snow Showers then Mostly Cloudy
18 to 29 mph NW Friday Night

A slight chance of snow showers before midnight. Mostly cloudy, with a low around 24. New snow accumulation of less than half an inch possible.

7-Day Forecast

Demographics

The population of Saint Onge increased by 6.87% in 10 years.

Year Population % Change Method
2010 339 - census
2011 344 1.45% estimation process
2012 344 0% estimation process
2013 349 1.43% estimation process
2014 345 -1.16% estimation process
2015 345 0% estimation process
2016 351 1.71% estimation process
2017 356 1.4% estimation process
2018 358 0.56% estimation process
2019 361 0.83% estimation process
2020 364 0.82% estimation process
Saint Onge zip code is 57779. County name: Lawrence, County fips: 46081

Nearby Schools and Colleges

Schools and campuses linked to Saint Onge, SD. Select a name to open its map and contact details.

Code Name City ZIP
219046 Black Hills State University Spearfish (SD) 57799-9500

Closest post offices linked to Saint Onge.

Post Office Name City ZIP
Saint Ong Post Office Saint Onge (SD) 57779

Other cities in Lawrence County

Cities, towns, neighborhoods & other populated places in Lawrence County , SD.

City Name Population Title
Spearfish 11,900 City in Lawrence County, South Dakota, United States
Lead 2,947 City in South Dakota, United States of America
North Spearfish 2,285 Census-designated place in Lawrence County, South Dakota, United States
Deadwood 1,294 City in and county seat of Lawrence County, South Dakota, United States
Whitewood 999 City in Lawrence County, South Dakota, United States
Preston 184 Township in Brookings County, South Dakota
Central City 131 City in Lawrences County, South Dakota, United States
Englewood 19 Human settlement in United States of America