USDA Quick Stats › Iowa yield by year

Iowa corn, soybean & wheat yield by year

USDA NASS state yield estimates for Iowa, annual (end-of-season) figures only: corn (2010–2025, n = 16), soybeans (2010–2025, n = 16), winter wheat (2010–2018, n = 9). Every figure below is a USDA NASS number for the year shown; nothing is estimated or filled in by AGSIST. Source files updated Oct 6, 2026.

Corn · 2025 USDA NASS
210 bu/ac
  • Highest (2010–2025): 211 in 2024
  • Lowest (2010–2025): 137 in 2012
  • 5-year average (2021–2025): 205.2 bu/ac, n = 5 of 5 years
  • 10-year average (2016–2025): 200.2 bu/ac, n = 10 of 10 years
  • Trend (2010–2025): +3.38 bu/ac per year, n = 16 years (least-squares line, not projected)
Soybeans · 2025 USDA NASS
63.5 bu/ac
  • Highest (2010–2025): 63.5 in 2025
  • Lowest (2010–2025): 45 in 2012
  • 5-year average (2021–2025): 60.6 bu/ac, n = 5 of 5 years
  • 10-year average (2016–2025): 58.5 bu/ac, n = 10 of 10 years
  • Trend (2010–2025): +0.90 bu/ac per year, n = 16 years (least-squares line, not projected)
Winter wheat · 2018 USDA NASS
58 bu/ac
  • Highest (2010–2018): 68 in 2017
  • Lowest (2010–2018): 45 in 2011
  • 5-year average (2014–2018): 58.0 bu/ac, n = 5 of 5 years
  • 10-year average (2009–2018): — the NASS pull on this page starts in 2010, so no full 10-year window ends in 2018
  • Trend (2010–2018): +2.38 bu/ac per year, n = 9 years (least-squares line, not projected)
Current season, kept out of the table above. USDA NASS figures from AGSIST’s state crop file (data/state-stats.json), with that file’s own label:A forecast changes month to month and is not comparable with the annual estimates in the table.

Iowa yield by year

Newest first. Bushels per acre; planted acres in millions. Source: USDA NASS Quick Stats, state level. — means NASS published no figure for that year; “pending” means NASS has not yet released that crop year’s annual estimate (corn and soybeans come out in January).

YearCorn
bu/ac		Corn
planted, M ac		Soybeans
bu/ac		Soybeans
planted, M ac		Winter wheat
bu/ac
202521013.5563.59.45—
202421112.96010.05—
202320113.1589.95—
202220012.958.510.1—
202120412.96310.1—
202017713.6549.45—
201919813.4559.2—
201819613.2569.9558
201720213.3571068
201620313.9609.563
201519213.556.59.8552
201417813.7519.8549
201316413.645.59.352
201213714.2459.3550
201117214.151.59.3545
201016513.4519.846

Top Iowa counties by 2025 corn yield

USDA NASS county corn-for-grain yield, 2025, all practices. NASS published a 2025 figure for 79 of the 99 counties in the Atlas; counties without a published figure are not ranked. The last column compares with the Iowa state yield of 210 bu/ac.

#County2025 bu/acvs state
1Howard County233.8+23.8
2Ida County232.4+22.4
3Osceola County230.1+20.1
4Emmet County227.1+17.1
5Cherokee County225.4+15.4
6Crawford County224.9+14.9
7Audubon County224.7+14.7
8Scott County224.5+14.5
9Sac County224.3+14.3
10Delaware County224.1+14.1
How these numbers are made. Yields and planted acres are USDA NASS Quick Stats state estimates, pulled with the reference period pinned to the full year, so in-season monthly forecasts never enter the table. Highest and lowest are over the published years shown, not all-time records. Averages are plain means of the published years in the stated window, printed with how many years they rest on (withheld below 3 of 5 or 6 of 10). The trend is an ordinary least-squares line through every published year (at least 8); it describes the past window and is not a forecast. County figures are NASS county corn yields, all practices, as carried by the AGSIST Farmland Atlas. Wheat here is winter wheat only (NASS “WHEAT, WINTER”); spring wheat and durum are not included. AGSIST’s NASS pull carries no state winter wheat planted-acres series, so no wheat acres column is shown.

Related: corn & soybean yields for every state (USDA Quick Stats) · Iowa Farmland Atlas: every county · Iowa cash rent by county · Iowa cash basis today.

Yield by year in other states

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