아산군청은 1922년의 장항선 철도 개통 시기에 맞춰 새로운 발전이 급속히 진행되고 있는 온양읍 온천리로 이전되었다.
Asan-gun Office was relocated to Onyang-eup Oncheon-ri, which was undergoing rapid new development in accordance with the opening of the Janghang Line Railway in 1922.