Oak Brook is a village in DuPage County with a small portion in Cook County in Illinois. The population was 8,163 at the 2020 census.[1] It was made into a village in 1958.[2]
Municipalities and communities of DuPage County, Illinois, United States | ||
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Villages |
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Unincorporated communities |
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Footnotes | ‡This populated place also has portions in an adjacent county or counties |
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National |