State Corn Yield Per Acre: Causes of Variations

An analysis of state average corn yield history data provided by the USDA NASS indicates there are two causes of corn yield (in bushel per acre) variations at the regional level in the United States.  These variations impact US state corn production.  Each is important for creating an accurate corn yield forecast.  The causes of year-to-year crop and soybean yield variations at the state and national level are:

  1. The Technology Trend – many types of technology are improving yields for both soybeans and corn. The result is an increase in how much corn crop per acre can be produced on a piece of farmland.   The charts below show corn and soybean yields from 1986 to 2017 as reported by the USDA. The general upward slope of the line is the technology trend.
  2. Weather conditions during the corn growing season – after removing the effect of the technology trend, the impact of weather on the corn crop can be estimated.  The variations around the upward trend in the data the charts below are caused by weather conditions during the US growing season.  CropProphet uses the evolving weather conditions during each crop season to forecast the end of season yield and production.
  3. State to state differences in weather conditions and soil type and nutrients levels.  The graphic below shows the 2019 corn yield by state. There is a wide range of variations in the state average corn yield.
2019 Top Corn Yield per acre States

Follow this link if you are interested in state soybean yield per acre rankings or US crop production statistics.

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State Average Corn Yield Per Acre – 2019 Top 11:

Corn Yield Per Acre by State: Top 11 of 2019

The top 11 cornyields by state of 2019 were:

Yield Rankings: 2019
Rank State Yield (bu/ac)
1 Oregon 237
1 Washington 237
3 Arizona 231
4 Idaho 205
5 Iowa 198
6 Nebraska 182
7 Illinois 181
8 Tennessee 177
9 Arkansas 175
10 Minnesota 174
10 Mississippi 174

State Corn Yield – 2019

Corn Production by State - 2019 Rankings

 

However, because Oregon, Washington, Arizona, and Idaho do not have anywhere near as many planted corn acres (and therefore harvested corn) they produce significantly less corn than Midwestern states.  

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Corn Yield Per Acre by State: Top 11 of 2018

The top 11 cornyields by state of 2018 were:

Yield Rankings: 2018
Rank State Yield (bu/ac)
1 Arizona 220
1 Washington 220
3 Idaho 213
4 Illinois 210
5 Iowa 196
6 Oregon 195
7 Nebraska 192
8 Indiana 189
9 New Mexico 187
9 Ohio 187
11 Mississippi 185

State Corn Yield – 2018

Corn Production by State - 2018 Rankings

Corn Yield Per Acre by State: Top 11 of 2017

The top 11 cornyields by state of 2017 were:

Yield Rankings: 2017
Rank State Yield (bu/ac)
1 Washington 225
2 Oregon 212
3 Idaho 203
4 Iowa 202
5 Illinois 201
6 Arizona 195
7 Minnesota 194
8 Delaware 189
8 Mississippi 189
10 Louisiana 184
11 Arkansas 183

State Corn Yield – 2017

Corn Production by State - 2017 Rankings

Corn Yield Per Acre by State: Top 11 of 2016

The top 11 cornyields by state of 2016 were:

Yield Rankings: 2016
Rank State Yield (bu/ac)
1 Washington 235
2 Oregon 230
3 Arizona 215
4 Iowa 203
5 Illinois 197
6 Minnesota 193
7 Idaho 188
8 California 185
9 Nebraska 178
9 Wisconsin 178
11 Utah 175

State Corn Yield – 2016

Corn Production by State - 2016 Rankings

Corn Yield Per Acre by State: Top 11 of 2015

The top 11 cornyields by state of 2015 were:

Yield Rankings: 2015
Rank State Yield (bu/ac)
1 Washington 215
2 Arizona 210
3 Idaho 207
4 Delaware 192
4 Iowa 192
6 Minnesota 188
6 Oregon 188
8 Nebraska 185
9 Arkansas 181
10 New Mexico 180
11 Illinois 175
11 Mississippi 175

State Corn Yield – 2015

Corn Production by State - 2015 Rankings

Corn Yield Per Acre by State: Top 11 of 2014

The top 11 cornyields by state of 2014 were:

Yield Rankings: 2014
Rank State Yield (bu/ac)
1 Washington 215
2 Arizona 210
3 Delaware 200
3 Idaho 200
3 Illinois 200
6 New Mexico 195
7 Oregon 190
8 Indiana 188
9 Arkansas 187
10 Missouri 186
11 Mississippi 185

State Corn Yield – 2014

Corn Production by State - 2014 Rankings

Corn Yield Per Acre by State: Top 11 of 2013

The top 11 cornyields by state of 2013 were:

Yield Rankings: 2013
Rank State Yield (bu/ac)
1 Washington 215
2 California 191
3 New Mexico 190
4 Oregon 188
5 Arkansas 186
6 Idaho 181
7 Illinois 178
8 Arizona 177
8 Indiana 177
10 Mississippi 176
11 Georgia 175

State Corn Yield – 2013

Corn Production by State - 2013 Rankings

Corn Yield Per Acre by State: Top 11 of 2012

The top 11 cornyields by state of 2012 were:

Yield Rankings: 2012
Rank State Yield (bu/ac)
1 Washington 215
2 Oregon 205
3 Arizona 195
3 Idaho 195
5 California 180
5 Georgia 180
7 Arkansas 178
8 Louisiana 173
9 New Mexico 170
10 Utah 167
11 Minnesota 165
11 Mississippi 165

State Corn Yield – 2012

Corn Production by State - 2012 Rankings

Corn Yield Per Acre by State: Top 11 of 2011

The top 11 cornyields by state of 2011 were:

Yield Rankings: 2011
Rank State Yield (bu/ac)
1 Washington 225
2 Oregon 215
3 Idaho 189
4 California 181
5 New Mexico 180
6 Arizona 178
7 Iowa 172
8 Utah 164
9 Nebraska 160
10 Georgia 159
11 Illinois 157

State Corn Yield – 2011

Corn Production by State - 2011 Rankings

Corn Yield Per Acre by State: Top 11 of 2010

The top 11 cornyields by state of 2010 were:

Yield Rankings: 2010
Rank State Yield (bu/ac)
1 Arizona 210
2 Washington 205
3 Oregon 200
4 California 192
5 Idaho 190
6 New Mexico 180
7 Utah 178
8 Minnesota 177
9 Nebraska 166
10 Iowa 165
11 Wisconsin 162

State Corn Yield – 2010

Corn Production by State - 2010 Rankings

Corn Yield Per Acre by State: Top 11 of 2009

The top 11 cornyields by state of 2009 were:

Yield Rankings: 2009
Rank State Yield (bu/ac)
1 Oregon 215
1 Washington 215
3 New Mexico 190
4 Idaho 185
5 Iowa 181
6 California 180
7 Nebraska 179
8 Arizona 175
9 Illinois 174
9 Minnesota 174
11 Indiana 171
11 Ohio 171

State Corn Yield – 2009

Corn Production by State - 2009 Rankings

Corn Yield Per Acre by State: Top 11 of 2008

The top 11 cornyields by state of 2008 were:

Yield Rankings: 2008
Rank State Yield (bu/ac)
1 Washington 205
2 California 195
2 Oregon 195
4 New Mexico 185
5 Illinois 179
6 Iowa 171
7 Idaho 170
8 Arizona 165
9 Nebraska 163
10 Minnesota 162
11 Indiana 160

State Corn Yield – 2008

Corn Production by State - 2008 Rankings

Corn Yield Per Acre by State: Top 11 of 2007

The top 11 cornyields by state of 2007 were:

Yield Rankings: 2007
Rank State Yield (bu/ac)
1 Washington 210
2 Oregon 200
3 Arizona 185
4 California 182
5 New Mexico 180
6 Illinois 175
7 Iowa 171
8 Idaho 170
9 Arkansas 169
10 Louisiana 163
11 Nebraska 160

State Corn Yield – 2007

Corn Production by State - 2007 Rankings

Corn Yield Per Acre by State: Top 11 of 2006

The top 11 cornyields by state of 2006 were:

Yield Rankings: 2006
Rank State Yield (bu/ac)
1 Washington 210
2 New Mexico 185
3 Oregon 180
4 Arizona 170
4 Idaho 170
6 Iowa 166
7 California 165
8 Illinois 163
9 Minnesota 161
10 Ohio 159
11 Indiana 157
11 Utah 157

State Corn Yield – 2006

Corn Production by State - 2006 Rankings

Corn Yield Per Acre by State: Top 11 of 2005

The top 11 cornyields by state of 2005 were:

Yield Rankings: 2005
Rank State Yield (bu/ac)
1 Washington 205
2 Arizona 195
3 New Mexico 175
4 Minnesota 174
5 Iowa 173
6 California 172
7 Idaho 170
8 Utah 163
9 Oregon 160
10 Indiana 154
10 Nebraska 154

State Corn Yield – 2005

Corn Production by State - 2005 Rankings

Corn Yield Per Acre by State: Top 11 of 2004

The top 11 cornyields by state of 2004 were:

Yield Rankings: 2004
Rank State Yield (bu/ac)
1 Washington 200
2 Iowa 181
3 Arizona 180
3 Illinois 180
3 New Mexico 180
6 California 175
6 Idaho 175
8 Oregon 170
9 Indiana 168
10 Nebraska 166
11 Missouri 162

State Corn Yield – 2004

Corn Production by State - 2004 Rankings

Corn Yield Per Acre by State: Top 11 of 2003

The top 11 cornyields by state of 2003 were:

Yield Rankings: 2003
Rank State Yield (bu/ac)
1 Washington 195
2 Arizona 190
3 New Mexico 180
4 Oregon 170
5 Illinois 164
6 California 160
7 Iowa 157
8 Ohio 156
9 Utah 155
10 Indiana 146
10 Minnesota 146
10 Nebraska 146

State Corn Yield – 2003

Corn Production by State - 2003 Rankings

Corn Yield Per Acre by State: Top 11 of 2002

The top 11 cornyields by state of 2002 were:

Yield Rankings: 2002
Rank State Yield (bu/ac)
1 Washington 190
2 Arizona 185
3 New Mexico 175
4 California 170
5 Iowa 163
6 Oregon 160
7 Minnesota 157
8 Idaho 155
9 Colorado 150
10 Utah 142
11 Montana 140

State Corn Yield – 2002

Corn Production by State - 2002 Rankings

Corn Yield Per Acre by State: Top 11 of 2001

The top 11 cornyields by state of 2001 were:

Yield Rankings: 2001
Rank State Yield (bu/ac)
1 Arizona 208
2 Washington 190
3 New Mexico 180
4 California 170
5 Indiana 156
6 Illinois 152
7 Idaho 150
8 Louisiana 148
8 Montana 148
10 Nebraska 147
11 Delaware 146
11 Iowa 146

State Corn Yield – 2001

Corn Production by State - 2001 Rankings

Corn Yield Per Acre by State: Top 11 of 2000

The top 11 cornyields by state of 2000 were:

Yield Rankings: 2000
Rank State Yield (bu/ac)
1 Arizona 196
2 Washington 185
3 Oregon 180
4 California 170
5 Delaware 162
6 Idaho 160
6 New Mexico 160
8 Maryland 155
9 Illinois 151
10 Ohio 147
11 Indiana 146
11 Virginia 146

State Corn Yield – 2000

Corn Production by State - 2000 Rankings

CropProphet is an “ag weather” based corn and soybean yield/production forecasting system. It forecasts the end of season USDA corn and soybean yield and production. For example, starting in May and finishing in November, CropProphet forecasts US national average corn yield each year.

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