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US Distribution of Active Stallions and Mares Bred
For the year: 2019
State by
Ranking
Mares
Bred
Stallions Avg.
Book
Kentucky17,26023473.8
California2,16515713.8
Florida2,07812117.2
Louisiana1,10110310.7
New York1,0825121.2

Pennsylvania8684917.7
Maryland8043324.4
New Mexico677917.4
Oklahoma658778.5
Indiana441558.0

Texas433934.7
West Virginia4113810.8
Arkansas374438.7
Ohio373556.8
Washington165325.2

Arizona137216.5
Illinois127255.1
Oregon112157.5
Colorado106254.2
Iowa79155.3

North Dakota63134.8
Nebraska62144.4
Michigan55124.6
Minnesota49124.1
Wyoming44104.4

New Jersey38113.5
Alabama37142.6
Virginia31142.2
South Carolina2864.7
Tennessee2273.1

Idaho21102.1
Kansas2072.9
Missouri1762.8
Montana1772.4
South Dakota1653.2

Utah1572.1
Mississippi1033.3
Massachusetts531.7
North Carolina522.5
Wisconsin531.7

Georgia111.0

Total30,0121,50020.0

States ranked by number of mares bred. Mares bred to two stallions in the same breeding season are counted twice.

Source: The Jockey Club