Updated March, 2023
Historical Corn Yields by County
The average corn yields for counties and areas in Iowa are included in this file. Averages from 2013 through 2022 are included in the tables and graphs. These tables are presented in the accompanying "pdf" file that you can access by clicking here or on the icon above.
This information is helpful for seeing trends in yields over the past 10 years. Counties are sorted alphabetically by district. The information presented in this file is from the Iowa Office of National Agricultural Statistics Service.
In addition to the USDA NASS yield data available in this Information File, recent county yields from the USDA Risk Management Agency (RMA) for Supplemental Coverage Option (SCO) and Enhanced Coverage Option (ECO) are available in Decision Tool A1-44, SCO and ECO County Yield History for Iowa.
Ann M. Johanns, extension program specialist, 515-337-2766, firstname.lastname@example.org