It appears a casting call for Jurassic World is well underway according to Acting-Auditions.org. Casting is taking place in Los Angeles for co-starring and supporting roles but there will be additional casting in the filming locations of Baton Rouge, LA and Hawaii. Interior shots will be filmed in sound stages at Raleigh Studios in Baton Rouge, while exterior filming will take place on the island of Kauai and other locations in Hawaii.
Information on how to apply for a role can be founds on the site above. It says that actors must be eligible to work in Louisiana and the United States.