In Spain:
* Catalonia: The region of Catalonia borders France and has a strong Catalan language presence. While Spanish is the official language, many people in Catalonia, particularly in the areas closer to the French border, speak both Catalan and French.
* Northern Basque Country: The Basque language is spoken in both Spain and France. While the Basque language is distinct from both French and Spanish, many people in this region speak both Basque and Spanish, and some also speak French due to proximity to the French border.
In France:
* The French Basque Country: The Basque Country extends into southwestern France. As mentioned above, many people in this region speak Basque, and many also speak both Spanish and French.
* Occitania: Occitania is a region in southern France with its own distinct Occitan language. While Occitan is not directly related to Spanish, there's a history of cultural and linguistic exchange between Occitania and Spain, and some people in the region may speak both Occitan and Spanish, alongside French.
Important to Note:
* Bilingualism is not universal: While there are pockets where bilingualism is common, it's not the norm for entire towns in either Spain or France.
* Language varies: The level of fluency in French and Spanish can vary greatly, with some people being more fluent in one language than the other.
Overall, while there isn't a town with both French and Spanish as official languages, you'll find areas in both Spain and France where a significant portion of the population speaks both languages, often alongside other languages like Basque, Catalan, or Occitan.