Iowa Farmland

Data Tools

This page highlights interactive tools and maps that connect to U.S. land markets, farm structure, and ownership trends. Use them to dig deeper into how farmland is owned, used, and consolidated over time.

Uncategorized resources

  • Land Value Graphs

    Land Value Graphs

    This decision tool provides a historical representation of land values across all 99 counties in Iowa annually since 1950. In particular, we offer comparative visualizations for nominal land values and inflation-adjusted land values to 2015 levels, annual percentage change in county land values, as well as aggregate dollar-amount changes in land values for a selected time period.

  • Land Value Interactive Maps

    Land Value Interactive Maps

    This decision tool provides an interactive and intuitive way to compare land values across all 99 counties in Iowa annually since 1950. In particular, we offer visualizations for nominal land values and inflation-adjusted land values to 2015 levels, annual percentage change in county land values, as well as aggregate dollar-amount changes in land values for a selected time period.

  • Consolidation in U.S. Agricultural Production

    Ag Consolidation Tool

    Explore how U.S. crop production is shifting from small to large farms. The Share Weighted Size Index (SWSI) uses Census of Agriculture data to measure farm concentration across states and crops from 1959 to 2022. Interactive maps and charts let you compare trends over time and across crops.

    The Share Weighted Size Index (SWSI) is an interactive tool for tracking farm consolidation across the United States. Using Census of Agriculture data, it measures how crop production is distributed among small, medium, and large farms in each state.

    With the SWSI tool, users can:
    •  Explore state-level trends for crops such as corn, soybeans, wheat, cotton, fruits, and vegetables
    •  Visualize farm structure changes from 1959 to 2022
    •  Compare consolidation patterns across crops, states, and census years
    •  See long-term shifts in production from smaller farms to larger operations

  • Foreign Interest in U.S. Agricultural Land

    Foreign Interest Tool

    Explore patterns of foreign ownership of U.S. farmland with this interactive mapping tool, built from data reported under the Agricultural Foreign Investment Disclosure Act (AFIDA). The tool provides a county-level view of foreign-held farmland, cropland, pastureland, and forestland, broken down by country of ownership.

    Users can:
    •  Visualize land ownership trends across the United States at the county level.
    •  View data by land type (cropland, pasture, forest, other agricultural uses).
    •  Compare ownership across different countries and regions.
    •  Identify counties with the highest levels of foreign-held acreage.