Bing found the following results
Demonym - Wikipedia
List of demonyms for US states and territories - Wikipedia
List of adjectival and demonymic forms for countries and nations
Demonym - Simple English Wikipedia, the free encyclopedia
List of adjectivals and demonyms for cities - Wikipedia
List of adjectival and demonymic forms of place names - Wikipedia
Demonym | Definition, Suffixes, & Etymology | Britannica
Demonyms for the United States - Wikipedia
Demonym Definition and Examples in English - ThoughtCo
demonym - Wiktionary, the free dictionary