| Place Name | Fairfield |
| Place Type | Town |
| ZIP Code(s) | 99012 |
| County | Spokane County |
| Area Code(s) | 509 |
| Timezone | Pacific Daylight Time (PDT) |
| Population (2022) | 510 |
| Population Growth Rate (2010-19) | -3.76% |
| Majority Ethnicity | White 94.11% |
| Metro/Micro Stats Area | Spokane-Spokane Valley, WA |
| US Congressional District(s) | Washington 5th |
| State House Districts | 9 |
| State Senate Districts | 9 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 94.11% |
| African American | 0% |
| Hispanic | 2.21% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 3.68% |