KRYPTONOPOLIS
Hey, I didn't name it! Yes, there really is a Kryptonopolis on Krypton and it's where Kal-El was born. Think of it as a more advanced iteration of say Minneapolis or Metropolis, but with cooler architecture. Located on the major continent of Lurvan, Kryptonopolis became the capital city of Krypton by default, following the abduction and unfortunate bottling of Krypton's former capital, Kandor, by the planet-collecting fiend, Brainiac. Superman's parents, Jor-El and Lara Lor-Van lived in the fashionable sectors of downtown Kryptonopolis. Its first appearance in comics came in the pages of Superman #155 in February of 1963.

source : https://www.syfy.com/syfywire/a-travelers-guide-to-the-cities-of-krypton