Milk production in Iowa during August 2019 totaled 435 million pounds, down 1 percent from the previous August according to the latest USDA, National Agricultural Statistics Service – Milk Production report. The average number of milk cows during August, at 216,000 head, was the same as last month but down 4,000 from last year. Monthly production per cow averaged 2,015 pounds, up 20 pounds from last August.