As of April 2013, there are 11 conservation areas in the borough of Crawley in West Sussex, England. Crawley has ancient origins as a market town, but following centuries of gradual growth it was transformed in the postwar era when it was selected as a New Town. The population is now over 100,000. Several areas retain their long-established character and buildings of historic interest, and some postwar parts of the town have been designated as conservation areas because of their architectural and social importance.