This next graph shows the top 10 U.S. states based on the number of hogs and pigs in 2018. Iowa came in first place, where the inventory stood at around 22.6 million hogs and pigs, as of March 2018 estimate. The total number of hogs and pigs in the U.S. is estimated to be about 72.9 million and up 3% from 2017.

Top 10 States in Hogs and Pigs in 2018