| Place Name | St. John |
| Place Type | City |
| ZIP Code(s) | 67576 |
| County | Stafford County |
| Area Code(s) | 620 |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 1,351 |
| Population Growth Rate (2010-19) | -5.17% |
| Majority Ethnicity | White 79.6% |
| US Congressional District(s) | Kansas 4th |
| State House Districts | 113 |
| State Senate Districts | 33 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 79.6% |
| African American | 0% |
| Hispanic | 2.51% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 17.9% |