Around 2003 the community only had 400 people. Growth in Fulshear exploded in the 2000s due to its proximity to Houston. Around 2008 the community had around 700 residents. In October 2013 the population went over 5,000. By that time, traffic was commonplace while historically it had not been.
Fulshear has an extraterritorial jurisdiction of 37.11 square miles (96.1km2). Of the general law cities in Texas, Fulshear has one of the largest ETJs.