* Recurring characters: The Simpsons has a vast cast of recurring characters, with hundreds appearing across 35 seasons. It's impossible to give an exact number.
* Named characters: There are thousands of named characters in The Simpsons, from main characters to minor ones who appear only once or twice.
* Background characters: The show is known for its detailed backgrounds, which are populated by countless unnamed characters who appear briefly or act as part of the setting.
It's safe to say that The Simpsons has thousands of characters, both named and unnamed. The show is constantly introducing new characters, so the number is always growing.