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US Distribution of Active Stallions and Mares Bred
For the year: 2016
State by
Ranking
Mares
Bred
Stallions Avg.
Book
Kentucky17,92424972.0
Florida2,87213721.0
California2,68018614.4
Louisiana1,53513611.3
New York1,5296125.1

Maryland9303725.1
New Mexico8901078.3
Oklahoma8651068.2
Texas6271284.9
Pennsylvania5545510.1

Indiana542707.7
West Virginia5004710.6
Ohio450558.2
Arkansas4274010.7
Washington366438.5

Illinois253406.3
Oregon170208.5
Colorado154295.3
Minnesota139216.6
Iowa121206.1

Michigan114284.1
Nebraska114186.3
Arizona105195.5
North Dakota100137.7
Idaho95214.5

Virginia52143.7
South Dakota4959.8
Alabama47114.3
South Carolina4595.0
New Jersey35103.5

Utah3384.1
Montana30142.1
Tennessee26112.4
Missouri2382.9
Wyoming2154.2

Kansas2054.0
Massachusetts2054.0
Wisconsin1133.7
North Carolina933.0
Georgia641.5

Mississippi522.5
Delaware111.0
Nevada111.0

Total34,4901,80519.1

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

Source: The Jockey Club