All youth under the age of eighteen (18) are required to be accompanied by a parent/guardian (adult - age 25+) to be admitted into the Contra Costa County Fair. Any person entering may be asked to show a valid California Driver License or Identification Card or other Government issued ID. Each adult can only chaperone four (4) youth at a time. Groups larger than 4 youths require an additional chaperone for every four (4) youths. The chaperone (parent/adult) are required to remain on the facility with the youth during their time at the Fair. The youth must provide a telephone number of the attending parent/adult to a Fair Security representative upon request. Any and all misbehaving youth will be held and released to their chaperone (parent/adult). Any youth under the age of eighteen (18) not accompanied by an adult will not be admitted.