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US Distribution of Active Stallions and Mares Bred
For the year: 2009
State by
Ranking
Mares
Bred
Stallions Avg.
Book
Kentucky19,27134256.3
Florida4,25618722.8
Louisiana3,62328912.5
California3,21725712.5
Texas1,8552816.6

Pennsylvania1,78212813.9
New York1,6308718.7
Oklahoma1,5961818.8
New Mexico1,5021848.2
Indiana1,08110710.1

West Virginia863889.8
Maryland8034816.7
Illinois662887.5
Washington540609.0
Arkansas399449.1

Arizona356576.2
Michigan304496.2
Iowa263308.8
Oregon252396.5
Minnesota245317.9

Nebraska212307.1
New Jersey210258.4
Colorado190365.3
Idaho173354.9
Ohio161384.2

Kansas142245.9
Virginia133423.2
South Dakota119148.5
North Dakota93146.6
Utah91204.6

South Carolina86204.3
Montana80273.0
Georgia76184.2
Tennessee62125.2
Alabama58153.9

Missouri47153.1
Massachusetts41113.7
Mississippi39162.4
North Carolina3065.0
Nevada1452.8

Wisconsin1434.7
Wyoming861.3

Total46,5793,00915.5

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

Source: The Jockey Club