| Richland | |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | USA South Dakota#USA |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location within the state of South Dakota |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | South Dakota |
| Subdivision Type2: | County |
| Subdivision Name2: | Union |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 14.62 |
| Area Land Km2: | 14.62 |
| Area Water Km2: | 0.00 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 97 |
| Population Density Km2: | 6.63 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 1161 |
| Coordinates: | 42.7556°N -96.6419°W |
| Postal Code Type: | ZIP codes |
| Blank Name: | FIPS code |
| Blank Info: | 46-54750 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2628849 |
| Area Total Sq Mi: | 5.65 |
| Area Land Sq Mi: | 5.65 |
| Area Water Sq Mi: | 0.00 |
| Population Density Sq Mi: | 17.18 |
Richland is a small unincorporated community and census-designated place (CDP) in Union County, South Dakota, United States. The population was 97 at the 2020 census.[3]
In 1861, the community was founded by and named after Milton M. Rich of Chicago. Mr. Rich was reported to have dreamed of building a community below the bluffs. However, it was also reported that Mr. Rich disagreed with railroad officials on how to divide the site of the town. The dispute was never resolved; and as a result, the railroad was deflected to Sioux City, Iowa after reaching Le Mars, Iowa.