DES MOINES, Iowa — In 2021, Kossuth County was the largest oat-producing county in Iowa at 263,000 bushels, according to estimates released Dec. 9 by the USDA, National Agricultural Statistics Service. Clayton County was second, with 186,000 bushels. Dubuque was the third largest oat-producing county with 178,000 bushels.
The highest yielding county was Kossuth with a yield of 120.1 bushels per acre. Franklin had the second highest yield at 102.7. The lowest yielding county was Van Buren at 37.1 bushels per acre. Keokuk had the second lowest yield at 48.8.
Yields are derived from production divided by area harvested. Only published estimates were considered in rankings of counties.
— USDA National Agricultural Statistics Service