Though "Beautiful Girls" is set on the East Coast, it was filmed almost entirely in Minnesota. The reunion happens in Hopkins, and one of the gang's hangout spots is Bryant-Lake Bowl in Minneapolis.
Willie Conway’s house is located at 1337 2nd Street South in Stillwater, Minnesota, about 25 miles east of Minneapolis. Marty’s house is located right next-door at 1341 2nd Street South.
More detailed information on the locations seen in the movie can be found on these links:
http://www.iamnotastalker.com/2010/05/12/the-beautiful-girls-houses/
http://www.iamnotastalker.com/tag/beautiful-girls-filming-locations/
For a list a movies filmed in Minnesota, check out the following articles below:
www.citypages.com - The 12 best movies filmed in Minnesota
www.onlyinyourstate.com - Most People Don’t Know These 16 Movies Were Filmed In Minnesota
www.examiner.com - Filmed in Minnesota; a quick guide to local sites seen on the big screen