Crawley currently provides one Member of Parliament.
The Crawley constituency came into being in 1983, Crawley having previously been part of the Horsham, Horsham and Crawley, and Horsham and Worthing constituencies at various times. The constituency boundary now follows the district (i.e. the Crawley Borough Council) boundary, with the addition of Gatwick Airport.
Wikipedia contains full details of constituency boundary changes and election results in Crawley.