Answer: boomtown

AnswerCrossword Clue
BOOMTOWN

Community that grew quickly

BOOMTOWN

Rapidly growing burg

BOOMTOWN

Prosperous place.

BOOMTOWN
Sudden city
BOOMTOWN
San Francisco, once
BOOMTOWNFast-growing community
BOOMTOWNFast grower, population-wise
BOOMTOWNProsperous place
BOOMTOWNCity with rapid population growth
BOOMTOWNClark Gable movie
BOOMTOWNSuddenly prosperous community