Residential delivery area · South Dakota
ZIP Code 57779: Saint Onge, SD
ZIP code 57779 uses the postal name Saint Onge, South Dakota and lies mostly in Lawrence County (96% of its land) with the rest in Butte County (Census 2020 ZIP-county file). About 350 people live there (Census Bureau, ACS 2020-2024). By Census place, 3% of its land lies in St. Onge (a census-designated place); 97% is outside any Census place.
- ACS2020-24
- Census2020
- ZBP2023
- IRS2022
- Town
- Saint Onge · its only residential ZIP
- County
- Lawrence County (96%); Butte County (4%)
- Census places
- St. Onge census-designated place
- Micro area
- Spearfish, SD
- House district
- SD at large 119th Congress
- State
- South Dakota
- Time zone
- Mountain
- Land area
- 41.1 sq mi · 8 people per sq mi
Where is ZIP code 57779?
57779 centers on 44.569°, -103.761° and covers 41.1 square miles of land plus 0.0 of water. It borders 3 ZIP codes: 57793, 57783, 57717.
The map draws ZIP code areas only. For the streets inside 57779, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 57779 compare with the rest of Lawrence County?
| Measure | 57779 | In Lawrence County | In SD |
|---|---|---|---|
| People (ACS 2020-2024) | 347 | 8th of 8 | 252nd of 375 |
| Median household income | – | not ranked | not ranked |
| Median home value | $286k | not ranked | not ranked |
57779's income and home value are not ranked: it has fewer than 1,000 residents (347). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 15% of U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 57779?
The 2020 Census counted 364 people in 57779; the ACS, which samples households over 2020-2024, estimates 347. Between the 2010 and 2020 censuses its population grew 9.3% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 347±188 (90% margin)
- 2020 Census count
- 364+9.3% since 2010 (333)
- Households
- 174
- Median age
- 53.3
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 57779?
Of the 347 people the ACS estimates in 57779, 4.3% are under 18 and 5.8% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (84.7%), then Other or two or more (15.3%).
- Under 184.3%
- 18 to 6489.9%
- 65 and older5.8%
- White, not Hispanic84.7%
- Other or two or more15.3%
- Hispanic or Latino0.0%
- Black, not Hispanic0.0%
- Asian, not Hispanic0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What are homes worth in 57779?
- Median home value (owners' estimate)
- $286,400
- Median gross rent
- –
- Homes owned by their occupants
- 100.0%
- Housing units
- 219
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001).
What businesses are in 57779?
12 business establishments had a location in this ZIP code in 2023, 3 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction4
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 57779?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 57793 | Whitewood | 2,173 | $87k | 9.4 mi |
| 57783 | Spearfish | 17,248 | $75k | 11.2 mi |
| 57717 | Belle Fourche | 8,983 | $78k | 26.1 mi |
| 57799 | Spearfish | 568 | – | 7.4 mi (near) |
| 57762 | Nisland | 512 | $68k | 14.5 mi (near) |
| 57732 | Deadwood | 1,714 | $44k | 16.9 mi (near) |
| 57741 | Fort Meade | 141 | – | 17.9 mi (near) |
| 82712 | Beulah, WY | 163 | – | 18.1 mi (near) |
| 57754 | Lead | 3,749 | $66k | 22.5 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.