 According to the latest Hogs and Pigs report from USDA, as of June 1, there were 74.5 million hogs and pigs on U.S. farms. That's up 1% from June of last year and up slightly from March 1 of this year. Now, according to the report, 74.5 million hogs and pigs, 68.5 million were market hogs, while 6.01 million were kept for breeding.