Argo City

History
When Krypton exploded,Zor-el built a fail-safe for Argo city. Fearing it won't work Zor-el and Alura Zor-el sent their daughter Kara away. The Fail-Safe ended up working saving Argo from krypton's destruction making it the last remaining city of Krypton.

Supergirl's return to Argo
Supergirl and Mon-el followed the radiation signature and the Black rock they needed to defeat Reign and it lead them to Argo. Kara reunited with her mother before convincing Selena and Jul-us to give her the Black rock.

Known Habitants

 * Alura Zor-el
 * ​​​​​​Selena
 * Jul-us

Former Habitants

 * Kara Zor-el

Deceased Habitants

 * Zor-el