| Place Name | Joachim Township |
| Place Type | Township |
| County | Jefferson County |
| Area Code(s) | 636 |
| Timezone | Central Daylight Time (CDT) |
| Population (2021) | 20,798 |
| Majority Ethnicity | White 96.61% |
| Metro/Micro Stats Area | St. Louis, MO-IL |
| US Congressional District(s) | Missouri 3rdMissouri 8th |
| State House Districts | 114 |
| State Senate Districts | 3,22 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 96.61% |
| African American | 1.6% |
| Hispanic | 0.09% |
| Asian | 0.27% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.43% |