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US Distribution of Active Stallions and Mares Bred
For the year: 2011
State by
Ranking
Mares
Bred
Stallions Avg.
Book
Kentucky15,94426859.5
Florida3,10015619.9
Louisiana3,05324512.5
California2,60221312.2
Pennsylvania1,3389613.9

New Mexico1,3181588.3
Texas1,2582135.9
Oklahoma1,2451767.1
New York1,2076418.9
Indiana1,1101169.6

West Virginia7916811.6
Maryland5533316.8
Washington463499.4
Arkansas4484510.0
Illinois406596.9

Arizona289417.0
Oregon223288.0
Iowa196267.5
Minnesota172286.1
Colorado150305.0

Idaho149344.4
New Jersey148226.7
Ohio125304.2
Michigan122403.1
North Dakota85146.1

Alabama84243.5
Nebraska82165.1
Kansas77184.3
South Dakota74126.2
Virginia74342.2

Montana69242.9
South Carolina68203.4
Utah64173.8
Georgia61193.2
Tennessee60173.5

Massachusetts3884.8
Missouri28102.8
North Carolina2683.3
Mississippi24102.4
Wisconsin1836.0

Connecticut10110.0
Nevada632.0
Wyoming212.0

Total37,3602,49715.0

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

Source: The Jockey Club