<-- (Oak_bowery) Previous || Next (Oak_center) -->
 
Oak Brook

1. Hinsdale, Illinois, United States Postal Service Zip Code is 60521 (Oak Brook) [SourcePSZ]
2. Oak Brook, Illinois, United States [Populated Place] is in DuPage County; location is 41°49'58"N 87°55'44"W [SourceGSP]
3. Oak Brook, Illinois, United States [Village]; population was 9,178 in 1990; housing units was 3,112 in 1990; location is 41°50'N 87°57'W; land area is 8.16 square miles (5,221 acres); water area is 0.10 square miles (62 acres); FIPS code is 54534 [SourceCBP]