Area code 763
Area code 763 is the telephone numbering plan code for the northwestern suburbs of Minneapolis-St. Paul, Minnesota, including cities such as Plymouth, Maple Grove, and Brooklyn Park. It was created in 2000 along with area code 952 (southwest suburbs) when they were carved out of area code 612, which now only contains the city of Minneapolis and a few inner-ring locales.
The area code splits in the Twin Cities are unusual - they split along municipal, rather than central office, boundaries. A sizeable number of exchanges are thus divided between two area codes, and a few are divided among three. 
The four Twin Cities area codes (612, 651, 763 and 952) comprise one of the largest local calling areas in the United States; with a few exceptions, no long-distance charges are applied from one part of the Twin Cities to another. Portions of area codes 320 and 507 are local calls from the Twin Cities as well.