Brookfield Zoo Chicago Zoological Society Centers of Excellence Follow Us Brookfield Zoo Directions by bus Directions by train Directions by car Chicago Zoological Society The Chicago Zoological Society is a private nonprofit organization that operates Brookfield Zoo on land owned by the Forest Preserves of Cook County. AZA Accredited. Sign Up for Z-Mail Sign up for the latest from Chicago Zoological Society's Brookfield Zoo and receive regular updates and special offers! © 2020 Chicago Zoological Society. All Rights Reserved. Terms of Use Privacy Policy Contact Information Chicago Zoological Society, 3300 Golf Rd, Brookfield, IL 60513