| Eureka, KS (Township) |
| Eureka, KS (Township) |
| Eureka , NE (Township) |
| Eureka, KS (City) |
| Eureka, KS (Township) |
| Eureka, KS (Township) |
| Eureka, KS (Township) |
| Eureka, CA (City) |
| Eureka, SD (City) |
| Eureka, SD (Township) |
| Eureka, SD (Township) |
| Eureka, NC (Town) |
| Eureka, IL (City) |
| Eureka, MN (Township) |
| Eureka County, NV (County) |
