| Place Name | Eureka |
| Place Type | City |
| ZIP Code(s) | 75109 |
| County | Navarro County |
| Area Code(s) | 430,903 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 402 |
| Population Growth Rate (2010-19) | 1.95% |
| Majority Ethnicity | White 83.81% |
| Metro/Micro Stats Area | Corsicana, TX |
| US Congressional District(s) | Texas 6th |
| State House Districts | 8 |
| State Senate Districts | 22 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 83.81% |
| African American | 4.29% |
| Hispanic | 0% |
| Asian | 0.48% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 11.43% |