California and Texas share 17 city names—a mix of historical coincidences, Spanish colonial legacy, and 19th-century naming trends.
| City Name | CA County | TX County | Notes |
|---|---|---|---|
| Austin | — (state capital) | Travis (state capital) | Both named for Stephen F. Austin |
| Beaumont | Riverside | Jefferson | French "beautiful mountain" |
| Castroville | Monterey | Medina | Henri Castro, empresario |
| Fairfield | Solano | Freestone | Common English place name |
| Grand Prairie | — | Dallas/Tarrant | CA: unincorporated area |
| Laguna Hills | Orange | — | TX: no incorporated city |
| Lancaster | Los Angeles | Dallas | English origin (Lancashire) |
| Longview | — | Gregg | CA: unincorporated (Tehama) |
| Mission | — | Hidalgo | CA: Mission Viejo, San Juan, etc. |
| Orange | Orange | Orange | Both county seats |
| Pasadena | Los Angeles | Harris | Chippewa "valley" |
| Round Rock | — | Williamson | CA: unincorporated area |
| San Angelo | — | Tom Green | CA: San Angelo (uninc., SLO) |
| Santa Fe Springs | Los Angeles | — | TX: Santa Fe (Galveston) |
| Sherman | — | Grayson | CA: Sherman Oaks (LA neighborhood) |
| Tehachapi | Kern | — | TX: no city (Tehachapi Mtns only) |
| Tulare | Tulare | — | TX: no city (Tulare County only) |
Paris, London, Rome, Athens, Vienna, Moscow, Berlin – both states have them too (often unincorporated).