| Place Name | Johnstown |
| Place Type | Town |
| ZIP Code(s) | 80534 |
| County | Weld County Larimer County |
| Area Code(s) | 970 |
| Timezone | Mountain Daylight Time (MDT) |
| Population (2022) | 9,748 |
| Population Growth Rate (2010-19) | 75.01% |
| Majority Ethnicity | White 78.81% |
| Metro/Micro Stats Area | Greeley, CO |
| US Congressional District(s) | Colorado 4thColorado 2nd |
| State House Districts | 48,49 |
| State Senate Districts | 23 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 78.81% |
| African American | 0.7% |
| Hispanic | 0.52% |
| Asian | 4.79% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 15.18% |