Sejong

Sejong is a city located in South Korea, holding the administrative designation of Sejong-si with the coordinates 36.59245 latitude and 127.29223 longitude. The municipality records a population of 394,630 residents and operates within the Asia/Seoul timezone.

The urban center bears the name of Sejong the Great, the fourth monarch of the Joseon state who ruled from 1418 to 1450 and is remembered for creating the native Korean alphabet, Hangul. Although the contemporary city is not the national capital, the historical figure it honors oversaw major developments in science, technology, medicine, agriculture, and the arts during his reign. Notable historical administrative and cultural achievements associated with the monarch's legacy include the reestablishment of the Hall of Worthies in 1420, the creation of the Ch'ilchŏngsan calendar, the publication of the 365-volume medical text Ŭibangyuch'wi, and the compilation of the agricultural text Nongsa chiksŏl.

Geographical and cartographic advancements also marked the historical era tied to the city's namesake, highlighted by the 1424 order for a national geography and the subsequent preparation of maps of Korea such as the Sinch'an p'alto chiriji. While the municipality today functions with transactions conducted in the KRW currency and supports languages including ko-KR and en, the historical records note that the fourth Joseon monarch advanced significant tax and land reforms, successfully launched the Ōei Invasion in 1419, and expanded northern borders against raiding Jurchens.

Official texts in North Korea evaluate these historical contributions positively while noting the heavier tax burdens and rigid class stratification of the period. Meanwhile, the city named in honor of the ruler continues to anchor a modern population of 394,630 people within South Korea, maintaining administrative records and geographic coordinates tied to the GeoNames record for Sejong and the historical documentation preserved regarding Sejong the Great.