D&C 125

As the Prophet Joseph Smith inquired of the Lord concerning a settlement in Iowa, the Lord responded - 

"...I say unto you, if those who call themselves by my name and are essaying to be my saints, if they will do my will and keep my commandments concerning them, let them gather themselves together unto the places which I shall appoint unto them by my servant Joseph, and build up cities unto my name, that they may be prepared for that which is in store for a time to come."  (Doctrine and Covenants 125:2)

Basically, follow the prophet!