Quick List Info
Dates Open - March 15 to September 13, 1970. Open 183 days.
Attendance - Total # of Visitors, Actual 64,218,770. Total # of Sold Admission Tickets, re: 63,607,568.
International Participants - 77 countries plus 1 territory.
Total Cost - Construction Y52,219,664,871, Operational Y36,891,240,784, Total Expenses Y89,110,905,655 ($249m at 358Y per $). According to the New York Times, the total spent on expo related projects plus expo was $3 billion spent with $420 million spent on preparation of site and construction of pavilions.
Site Acreage - Total acreage, including parking, 815 acres. Inside gates, approximately 449 acres.
Sanction and Type - Sanctioned by the Bureau of International Exhibitions on May 11, 1966 as a Universal Expo, General Category 1. At the time of the expo, the B.I.E. sanctioned fairs as General Category 1, 2, and Special. Would be considered a Universal style, Registered event today like those on the 0 year of the decade.
Ticket Cost - Adult Admission 800Y $2.23, Children 4-15 Half Price, Children 15-22 Three Quarter Price.
Photo top center: View of the fairgrounds at Expo '70, 1970. Courtesy Wikipedia Commons. Column Top: Expo '70 Official Poster, 1970, Original source likely Expo Authority. Courtesy Pinterest. Column Below: Osaka Expo Map, 1970, Expo Authority. Courtesy Pinterest.

Other Histories of World's Fairs to Check Out