| Place Name | Tranquillity |
| Place Type | Census Designated Place |
| ZIP Code(s) | 93668 |
| County | Fresno County |
| Area Code(s) | 559 |
| Timezone | Pacific Daylight Time (PDT) |
| Population (2022) | 990 |
| Population Growth Rate (2010-19) | 0.75% |
| Majority Ethnicity | Hispanic 0% |
| Metro/Micro Stats Area | Fresno, CA |
| US Congressional District(s) | California 21st |
| State Assembly Districts | 31 |
| State Senate Districts | 12 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 27.25% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 72.75% |