(unit : km)
| Three Han States Periods | Chungbuk once belonged to the land of Mahan | |
|---|---|---|
| Three Kingdoms Periods | The Baekje Kingdom occupied the central part of Korea which includes Cheongju and Boeun, the Silla Kingdom occupied the southern part of Korea which includes Yeongdong, Okcheon, and Boeun, and the Goguryeo Kingdom occupied the northeastern part of Korea which includes Jecheon, Danyang, Chungju, Goesan, and Jincheon. During the 4th century, the Baekje Kingdom occupied the entire area of Chungcheongbuk-do province | |
| Goryeo Dynasty Period | 995 | During the 14th year of King Seongjong’s reign, the Korean Peninsula was sectioned into 10 provinces. The main province was called Jungwon-do and controlled 13 gun and 42 hyeon |
| 1106 | During the 1st year of King Yejong’s reign, Hanam-do (Chungcheongnam-do) was integrated and called Chungcheong-do. | |
| 1171 | During the 1st year of King Myeongjong’s reign, Chungcheong-do was divided again. The majority of this main province became Yanggwang-do, and two new provinces, Chungjumok and Cheongjumok were established. | |
| 1356 | During the 5th year of King Gongmin’s reign, it was renamed as Chungcheong-do Province. | |
| Joseon Dynasty Period | 1395 | During the 4th year of King Taejo’s reign, gun and hyeon belonging to Yanggwang-ju were included in Gyeonggi-do. Gun and hyeon belonging to Chungju, Cheongju, Gongju, and Hongju were combined and established as Chungcheong-do. The governing office was located in Chungju |
| 1413 | During the 13th year of King Taejong’s reign, Yeohong (Yeoju-gun), Anseong, Eumjuk, Yangseong (part of Anseong-gun), and Yangji (part of Yongin-gun) were integrated into Gyeonggi-do, while each gun and hyeon of Okcheon, Cheongsan, Hwanggan, Yeongdong, and Boeun which belonged to Gyeongsang-do were included in Chungcheong-do province | |
| 1895. 5.26 | During the 32nd year of King Gojong’s reign, the province system was abolished, and the Korean Peninsula was organized into 23 administrative areas. The main province was integrated into Chungjubu | |
| 1896. 8. 4 | After abolishing the bu system of 13 provinces was established. The name ‘Chungcheongbuk-do’ was created for the first time, and the provincial office was established in Chungju | |
| 1908. 6. 5 | The provincial office was moved to Cheongju (Nammun-ro 2-ga, currently Jungang Park), and it governed 18 gun and 199 myeon. | |
| 1914. 3. 1 | Administrative areas were reorganized into 10 gun and 114 myeon. | |
| 1929 | Upon the reorganization of myeon, administrative areas were reduced to 10 gun and 101 myeon. | |
| 1931. 4. 1 | Upon the revision of the local system, Cheongju and Chungju-myeon were elevated to eup and reorganized into 10 gun, 2 eup, and 104 myeon | |
| 1937. 6. | The provincial office building was moved from Nammun-ro to the current location (Munhwa-dong). | |
| 1940.11. 1 | With the elevation of Yeongdong-myeon and Jecheon-myeon to eup, ‘Chungcheongbuk-do’ was reorganized into 10 gun, 4 eup and 102 myeon | |
| National Liberation Day of Korea | 1946. 6. 1 | After Cheongju-eup was elevated to bu, the province was reorganized into 1 bu, 10 gun, and 102 myeon. |
| 1947. 1.31 | After Sokri-myeon was divided into Nasokri-myeon and Oesokri-myeon, the province was reorganized into 1 bu, 10 gun and 103 myeon. | |
| 1949. 8.13 | After Okcheon and Jeungpyeong-myeon were elevated to eup, the province was reorganized into 1 bu, 10 guns 5 eup, and 101 myeon. | |
| 1949. 8.15 | After Cheongju-bu was changed to Cheongju-si, the province was reorganized into one city, 10 gun, 5 eup, and 101 myeon | |
| 1956. 7. 8 | After Chungju-eup was elevated to a city and Eumseong-myeon to eup, respectively, the province was reorganized into 2 cities, 10 gun, 5 eup and 100 myeon. | |
| 1963. 1. 1 | After Cheongwon-gun Saju-myeon was integrated into Cheongju-si; Goesan-gun Sangmo-myeon into Jungwon-gun; Samsong-ri of Nongam-myeon, Mungyeong-gun, Gyeongbuk into Cheongcheon-myeon, Goesan-gun, the province was reorganized into 2 cities, 10 gun, 5 eup, 99 myeon, and 1 local office | |
| 1973. 7. 1 | Upon the reorganization of administrative areas, Boeun-myeon, Jincheon-myeon, and Geumwang-myeon were elevated to eup and the province was reorganized into 2 cities, 10 gun, 8 eup and 96 myeon | |
| 1979. 5. 1 | With the elevation of Goesan-myeon and Danyang-myeon to eup, the province was reorganized into 2 cities, 10 gun, 10 eup, 94 myeon and three local offices | |
| 1980. 4. 1 | After Jecheon-eup was elevated to a city and Jecheon-gun was renamed to Jewon-gun, the province was reorganized into 2 cities, 10 gun, 9 eup, 94 myeon and 3 local offices | |
| 1980.12. 1 | After Maepo-myeon was elevated to eup, the province was reorganized into 3 cities, 10 gun, 10 eup, 93 myeon and three local offices. | |
| 1983. 2.15 | After Cheongwon-gun Gangseo-myeon was integrated into Cheongju-si, the province was reorganized into 3 cities, 10 gun, 10 eup, 92 myeon and 6 local offices | |
| 1989. 5. 1 | After setting up Dongbu and Seobu local offices in Cheongju-si, the province was reorganized into 3 cities, 10 gun, 2 local offices, 10 eup, 92 myeon, 56 dong and 6 myeon local offices | |
| 1990.12.31 | After setting up the Jeungpyeong local office in Chungcheongbuk-do province, the province was reorganized into 3 cities, 10 gun, 1 provincial local office, 10 eup, 92 myeon, 56 dong and 6 myeon offices. | |
| 1991. 1. 1 | Jewon-gun was renamed to Jecheon-gun | |
| 1992. 1. 1 | After the Danyang-eup Gudanyang office was elevated to Danseong-myeon, the province was reorganized into 3 cities, 10 gun, 1 provincial office, 10 eup, 93 myeon, 56 dong and 5 myeon offices | |
| 1995. 1. 1 | After Jungwon-gun was integrated into Chungju-si and Jecheon-gun was integrated into Jecheon-si, and after Sangdang-gu and Heungdeok-gu were established in Cheongju-si, the province was reorganized into 3 cities, 8 gun, 2 gu, 1 provincial office, 10 eup, 93 myeon, 60 dong, 5 myeon offices and 3 branch offices. | |
| 1995. 3. 2 | After Judeok-myeon of Chungju-si and Bongyang-myeon of Jecheon-si were elevated to eup, the province was reorganized into 3 cities, 8 gun, 2 gu, 1 provincial office, 12 eup, 91 myeon, 60 dong, 5 myeon offices and 3 branch offices. | |
| 1996. 1. 5 | After Sugok-dong, Heungdeok-gu, Cheongju-si was divided into Sugok 1 & 2 dong, the province was reorganized into 3 cities, 8 gun, 2 gu, 1 provincial office, 12 eup, 91 myeon, 61 dong, 5 myeon offices and 3 branch offices | |
| 1998. 2. 1 | After Yeongdong Buk 2 Buk 3 Su-dong, Sangdang-gu, Cheongju-si was integrated to Jungang-dong; and Seokgyeo-dong was integrated to Seongan-dong, the province was reorganized into 3 cities, 8 gun, 2 gu, 1 provincial office, 12 eup, 91 myeon, 58 dong, 5 myeon offices, and 3 branch offices. | |
| 1998. 9.23 | After abolishing Byeolbang and Gakgi offices in Danyang-gun, the province was reorganized into 3 cities, 8 gun, 2 gu, 1 provincial office, 12 eup, 91 myeon, 56 dong, 3 myeon offices, and three branch offices | |
| 1998. 9.25 | After Jungang-dong and Namcheon-dong Jecheon-si were integrated into Namcheon-dong’ Donghyun-dong, Duhak-dong into Donghyun-dong; Hwasan 1 & 2 dongs into Hwasan-dong; and Yeongcheon 1 & 2 dongs into Yeongcheon-dong, the province was reorganized into 3 cities, 8 gun, 2 gu, 1 provincial office, 12 eup, 91 myeon, 52 dong, and 3 myeon offices | |
| 1998.10. 1 | After Seongnae-dong and Chungin-dong were integrated into Seongnae-dong, Chungindong; Gyohyeon 1-dong and Anrim-dong into Gyohyeon-dong, and Anrim-dong;, Danwol-dong and Dalcheon-dong into Dalcheon-dong in Chungju-si, the province was reorganized into 3 cities, 8 gun, 2 gu, 1 provincial office, 121 eup, 91 myeon, 49 dong, and three myeon offices | |
| 1998.10.17 | After Deokpyeong and Song-myeon offices and Cheongan-myeon Buheung office in Goesan-gun were abolished, the province was reorganized into 3 cities, 8 gun, 2 gu, 1 provincial office, 12 eup, 91 myeon and 49 dong. | |
| 2000. 1. 1 | After Bukil-myeon, Cheongwon-gun was elevated to Naesu-eup; and Manseong-myeon in Jincheon-gun was changed to Gwanghyewon-meyon, the province was reorganized into 3 cities, 8 gun, 2 gu, 1 provincial office, 131 eup, 90 myeon and 49 dong | |
| 2003. 8.30 | After Jeungpyeong office was elevated to Jeungpyeong-gun, the province was reorganized into 3 cities, 9 gun, 2 gu, 13 eup, 90 myeon, and 50 dong | |
| 2005. 4. 1 | Sangmo-myeon in Chungju-si was changed to Suanbo-myeon | |
| 2007. 1. 1 | After Ochang-myeon, Cheongwon-gun was elevated to Ochang-eup, the province was reorganized into 3 cities, 9 gun, 2 gu, 14 eup, 89 myeon, and 50 dong | |
| 2007.10. 1 | Naesokri-myeon, Boeun-gun was changed to Sokrisan-myeon; Oesokri-myeon to Jangan-myeon; and Heobuk-myeon to Hoein-myeon | |
| 2008. 1. 1 | After Sanmibunjang-dong Cheongju-si was divided into Sannam-dong and Bunpyeong-dong, the province was reorganized into 3 cities, 9 gun, 2 gu, 14 eup, 89 myeon, and 51 dong | |
| 2012. 1. 1 | Yiru-myeon Chungju-si was changed to Daesowon-myeon, and Gangoe-myeon Cheongwon-gun to Osong-myeon | |
| 2014. 7. 1 | Cheongwon-gun, Cheongju-si was integrated into Cheongju-si (4 gu, 3 eup, and 10 myeon) | |