According to APHIS, the answer for 2007 is California, followed by Wisconsin, then New York.
No one knows, but if you know, you would be right. Tennessee is the state that leads the nation in cattle both in beef and dairy.
California.
Victoria leads the nation in the production of dairy products in Australia. It has a strong dairy industry with large dairy farms and processing facilities.
Dairy cattle, beef cattle, poultry, swine,
Wisconsin.
Texas
Kansas and Oklahoma are the top states for housing and feeding finisher cattle.
Louisiana
Maine
Wyoming
Texas has the most farms and the highest acreage in the United States. Texas leads the nation livestock production. Cattle is the state's most valuable agricultural product, and the state leads nationally in production of sheep and goat products. Texas leads the nation in production of cotton. The state grows significant amounts of cereal crops and produce. Texas has a large commercial fishing industry. With mineral resources, Texas leads in creating cement, crushed stone, lime, salt, sand and gravel. :)
Texas
There are approximately 2,100 dairy farms in the state of Michigan. Dairy is the largest agricultural product in the state. It ranks eighth in the nation in terms of milk production.