Paleolithic remains dating back from the 10th Century BC to tens of thousands of years ago were found in Seokjang-ri, Gongju. This indicates that human history in Chungcheongnam-do started from the Paleolithic Age.
Three Hans Period
It is estimated that about fifteen states, including Mokji state (Jiksan, Cheonan) among the 54 states of Mahan were distributed in the Chungcheongnam-do region.
Prehistoric Age~Three Hans Period
The capital of Baekje was moved from Hanseong (Seoul) to Wungjin (Gongju) in the first year of King Munju’s reign.
The capital of Baekje was moved from Wungjin (Gongju) to Sabi (Buyeo) in the 16th year of King Seong’s reign.
Baekje was collapsed by the Silla and Tang Allied Forces in the 20th year of King Uija’s reign and Wungjin Commandery was established.
Reorganized as Soburiju (Sabiju) in the 11th year of King Munmu’s reign.
Renamed Wungcheonju in the 6th year of King Sinmun’s reign.
Renamed as Wungju in the 16th year of King Gyeongdeok’s reign.
Later Three States Period Included in the region of the Later Baekje established by Gyeonhwon
Gongjumok was established by the 12-Mok System in the 3rd year of King Seongjong’s reign after Goryeo unified the Later Three States.
Yanggwangchungchenogju-do was established by combining three provinces, Gwannae-do, Chungwon-do and Hanam-do, among ten provinces.
Yanggwangju-do and Chungcheongju-do were divided.
Chungcheongju-do was merged into Yanggwang-do again.
Renamed Chungcheong-do in the 6th year of King Gongmin’s reign (It is estimated that Yanggwangchungcheongju-do was called both Yanggwang-do and Chungcheong-do for short at the end of the Goryeo period)
Yanggwang-do was divided into two provinces, Gyeonggi-do and Chungcheong-do.
Chungcheong-do was renamed Chunggong-do.
Chunggong-do was renamed Cheonghong-do (since then, Chungcheong-do was renamed as Gongcheong-do, Chungcheong-do, Gonghong-do, Cheonghong-do and Gongchung-do).
Gongchung-do was renamed Chungcheong-do again.
Aug. 4, 1896
Eight Guns were divided into 13 Guns (Chungnam was established).
Oct. 1, 1932
The provincial office was moved from Gongju to Daejeon.
Oct. 1, 1938
Nonsan-myeon of Nonsan-gun and Janghang-myeon of Seocheon-gun were promoted to Eup (1 Bu, 14 Guns, 6 Eups and 167 Myeons).
Nov. 1, 1940
Yesan-myeon of Yesan-gun was promoted to Eup (1 Bu, 14 Guns, 7 Eups, 165 Myeons)
Oct. 1, 1941
Onyang-myeon of Asan-gun and Hongseong-myeon of Hongseong-gun were promoted to Eup (1 Bu, 14 Guns, 9 Eups, 163 Myeons).
Jan. 1, 1960
Buyeo-myeon of Buyeo-gun was promoted to Eup (1 City, 14 Guns, 12 Eups, 16 Myeons)
Jan. 1, 1963
Geumsan-gun of Jeollabuk-do was incorporated into Chungnam.
Yeonmu-myeon of Nonsan-gun was promoted to Eup. Cheonan-eup was promoted to a city (2 Cities, 15 Guns, 15 Eups, 164 Myeons)
Jul. 1, 1973
Sapgyo-myeon of Yesan-gun, Hapdeok-myeon of Dangjin-gun, Taean-myeon of Seosan-gun and Seonghwan-myeon of Cheonwon-gun were promoted to Eup.
May 1, 1979
Seocheon-myeon of Seocheon-gun and Cheongyang-myeon of Cheongyang-gun were promoted to Eup (2 Cities, 2 Gus, 15 Guns, 23 Eups, 156 Myeons).
Dec. 1, 1980
Anmyeon-myeon of Seosan-gun was promoted to Eup (2 Cities, 2 Gus, 15 Guns, 24 Eups, 155 Myeons)
Feb. 15, 1983
The border lines of 15 Eups and Myeons were adjusted (2 Cities, 2 Gus, 15 Guns, 23 Eups, 154 Myeons)
Oct. 1, 1985
Seonggeo-myeon of Cheonan-gun was promoted to Eup (2 Cities, 2 Gus, 15 Guns, 24 Eups, 153 Myeons)
Jan. 1, 1986
Gongju, Daecheon and Onyang-eup were promoted to cities.
Jan. 1, 1989
Daejeon-si and Daedeok-gun were promoted to Daejeon directly controlled city. Seosan-eup was promoted to the city and separated from Seosan-gun.
Feb. 1, 1990
Gyeryong branch of Chungcheongnam-do was established.
Jan. 1, 1995
Eight cities and provinces, Gongju-si, Gongju-gun, Daecheon-si, Boryeong-gun, Onyang-si, Asan-gun, Seosan-si and Seosan-gun, were integrated into four cities (5 Cities, 11 Guns).
May 10, 1995
Cheonan-si and Cheonan-gun were integrated into Cheonan-si (5 Cities, 10 Guns)
Mar. 1, 1996
Nonsan-gun was promoted to Nonsan-si (6 Cities, 9 Guns, 22 Eups, 147 Mhyeons, 37 Dongs)
Sep. 19, 2003
Gyeryong Branch was promoted to Gyeryong-si (2 Myeons, 1 Dong)
Mar. 18, 2005
Special Act on Administrative City Construction was promulgated (around Nam-myeon, Geumnam-myeon and Dong-myeon in Yeongi-gun and Janggi-myeon and Banpo-myeon in Gongju-si).
Feb. 12, 2006
The site for movement of the provincial office was determined (around Sapgyo-eup, Yesan-gun and Hongbuk-myeon, Hongseong-gun).
Jan. 1, 2012
Dangjin-gun was promoted to Dangjin-si (2 Eups, 9 Myeons, 3 Dongs)
Jul. 1, 2012
Yeongi-gun and Janggi-myeon, Uidang-myeon and Banpo-myeon of Gongju-si were separated and promoted to Sejong Special Self-Governing City.
Jan. 2, 2013
The provincial office was moved from Daejeon to Naepo New City.
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