| Place Name | Callender |
| Place Type | Census Designated Place |
| ZIP Code(s) | 93420 |
| County | San Luis Obispo County |
| Area Code(s) | 805,820 |
| Timezone | Pacific Daylight Time (PDT) |
| Population (2022) | 1,633 |
| Population Growth Rate (2010-19) | 1.58% |
| Majority Ethnicity | White 71.67% |
| Metro/Micro Stats Area | San Luis Obispo-Paso Robles, CA |
| US Congressional District(s) | California 24th |
| State Assembly Districts | 35 |
| State Senate Districts | 17 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 71.67% |
| African American | 3.4% |
| Hispanic | 3.72% |
| Asian | 4.38% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 16.82% |