The Alameda County Fair (Northern California) starts June 17, and runs through July 5. Which days are Military Appreciation days?? EVERYDAY! That's right...Active duty and VETERANS are FREE with military ID or proof of service! For more details, directly from the San Diego County Fair website, click the "website" link on our event listing. While on our site, leave a comments about this event, or a review of any of the over 100,000 local and national businesses listed there.