subnational

adjective
sub·​na·​tion·​al | \ ˌsəb-ˈnash-nəl How to pronounce subnational (audio) , -ˈna-shə-nᵊl\
variants: or sub-national

Definition of subnational

: existing or occurring below a national level : relating to or being a group or region within a nation a subnational government members of a subnational culture Nations with differing political and economic systems are flourishing. Sub-national groups, with varied and contradictory agendas, are on the rise.— Fareed Zakaria

First Known Use of subnational

1840, in the meaning defined above

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