USDA / NASS planted-acreage and livestock-inventory reports. Data is cached for ~7 days so we automatically pick up the next Acreage, Prospective Plantings, or Cattle/Hogs report. Looking to estimate yields? Take the USDA Yield Challenge →
NASS Prospective Plantings (Mar 31) + Acreage (Jun 30) — planted acres by state for corn, soybeans, and wheat.
NASS planted acres (Prospective Plantings + Acreage). Pick a year to see state-level planted acres for corn, soybeans, and wheat, each with the year-over-year change.
Pick a year and click Fetch Report.
Look up USDA NASS crop production figures by state and year, including planted and harvested acres, yield, and production for corn, soybeans and wheat.