The total area of Seoul is 52 square kilometers ， or 6 percent of the entire The Hangang (River) bisects the city into two parts: northern part ( Gangbuk ) and southern one (Gangnam) The Gangbuk area totals 97 square kilometers (2 % ) while Gangnam is 55 square kilometers (8 % ) Seoul has a population of 10，297，004 as of the end of This accounts for about a quarter of the total national As for the proportion of male to female excluding foreigners， women (5，173，266) slightly outnumber men (5，123，738) By district， Nowon-gu has the biggest population of 624， In contrast， Jung-gu has the smallest population of only 134， Since Seoul became the capital of the nation in 1394， the population of Seoul has grown 110 Seoul belongs to the Temperate Zone featuring four distinctive seasons of spring， summer， autumn and The yearly average temperature of Seoul is 2 degrees C Temperatures in Seoul show large seasonal variation， reaching as high as 4 degrees Celsius in the summer and dropping as low as minus 2 degrees Celsius in the Influenced by the North Pacific high-pressure system， Seoul has hot and humid summers with average temperatures above 20 degrees Celsius from June through S
