| Smithwick, South Dakota | |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | South Dakota#USA |
| Pushpin Label: | Smithwick |
| 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: | Fall River |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 5.01 |
| Area Land Km2: | 5.01 |
| Area Water Km2: | 0.00 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 39 |
| Population Density Km2: | 7.79 |
| Timezone: | Mountain Time |
| Utc Offset: | -7 |
| Timezone Dst: | MDT |
| Utc Offset Dst: | -6 |
| Elevation Ft: | 3248 |
| Coordinates: | 43.2975°N -103.2164°W |
| Postal Code Type: | ZIP codes |
| Postal Code: | 57782 |
| Blank Name: | FIPS code |
| Blank Info: | 46-59620 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2807107 |
| Area Total Sq Mi: | 1.93 |
| Area Land Sq Mi: | 1.93 |
| Area Water Sq Mi: | 0.00 |
| Population Density Sq Mi: | 20.18 |
Smithwick is an unincorporated community and census-designated place (CDP) in Fall River County, South Dakota, United States. The population was 39 at the 2020 census.[3] Smithwick has been assigned the ZIP code of 57782.[4]
A post office called Smithwicks was established in 1887, and in 1901 the name was changed to Smithwick.[5] Smithwick was named for a railroad engineer.[6]