| Place Name | Johnston |
| Place Type | Town |
| ZIP Code(s) | 02919 |
| County | Providence County |
| Area Code(s) | 401 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2021) | 29,550 |
| Majority Ethnicity | White 81.71% |
| Metro/Micro Stats Area | Providence-Warwick, RI-MA |
| US Congressional District(s) | Rhode Island 2nd |
| State House Districts | 13,42,43,44 |
| State Senate Districts | 25 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 81.71% |
| African American | 4.55% |
| Hispanic | 0.01% |
| Asian | 1.06% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 12.68% |