More formal and structured mail services later emerged with the construction of the city’s first postal outlets, and the entire history of mail service in Cheonan (and in South Korea in general since 1883) is now on display in the country’s largest postal museum in Yang-ji-mal in eastern Cheonan.
Layanan surat yang lebih formal dan terstruktur kemudian muncul dengan pembangunan outlet pos pertama di kota, dan seluruh sejarah layanan pos di Cheonan (dan di Korea Selatan pada umumnya sejak 1883) kini dipamerkan di terbesar museum pos negara di Yang-ji-mal di Cheonan timur.