| Place Name | Johnstown |
| Place Type | Census Designated Place |
| ZIP Code(s) | 82501 82516 |
| County | Fremont County |
| Area Code(s) | 307 |
| Timezone | Mountain Standard Time (MST) |
| Population (2022) | 356 |
| Population Growth Rate (2010-19) | -6.20% |
| Majority Ethnicity | White 51.66% |
| Metro/Micro Stats Area | Riverton, WY |
| US Congressional District(s) | Wyoming At-Large |
| State House Districts | 33,34 |
| State Senate Districts | 25,26 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 51.66% |
| African American | 0% |
| Hispanic | 48.34% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |