Mikunigaoka Station is a junction between the West Japan Railway Company (JR West) Hanwa Line and the Nankai Electric Railway Koya Line. While It is served by JR rapid trains, only Nankai semi-express train and local trains serve this stop. It is an example of the competition arising where different companies serve the same station. Mi means 3 in Japanese, while kuni means "nation", "ga" is an archaic genetive particle and oka means "hill". Mikunigoaka is part of Sakai-ku, Sakai, Osaka.