Ada County, Idaho
Ada County, ID: irrigated cash rent $208 an acre (2026); land and buildings $13,084 an acre in the 2022 census; median corn yield 212.2 bu/ac. County averages from public records, not an appraisal of any farm. FIPS 16001. Figures as of 2026-09-20.
Corn yields in Ada County averaged 212.2 bushels per acre over 2008-2025, with the worst year, 2009, reaching 175.8. Land values reached $13,084 per acre in 2022, up 37.6 percent from 2017. July nightly lows averaged 61.4 F over 2017-2026 against a 1991-2020 normal of 58.8 F, with a warming trend of 1.12 F per decade since 1976; no July since 1900 has averaged a nightly low at or above 70 F.
ID median $179 · 13th highest of 32
ID median $3,689 · 2nd highest of 42
ID median $5.70 · 8th lowest of 36
ID median 33% · 11th highest of 42
Cash rent
Dollars per acre, USDA NASS county survey. A break in a line is a year with no published survey; nothing is drawn across it.
Land value
Corn yield
Bushels per acre, USDA NASS county yields, all practices. The dashed line is the median of the published years.
Crop insurance record
Claims paid divided by total premium (the farmer share plus the federal subsidy), each closed crop year since 1989. Above the dashed line, the county's insurance book paid out more than it took in. 2026, still open, is left out.
Drought and weather
Weeks per year, U.S. Drought Monitor, with half the county or more in D2 (severe) drought or worse.
Land, water and programs
Acres enrolled in the Conservation Reserve Program, USDA FSA, by fiscal year.
Next door
| County | Dry rent | Irr. rent | Land value | Claims per $100 |
|---|---|---|---|---|
| Ada County | — | $208 | $13,084 | $3.22 |
| Boise County | — | — | $2,053 | — |
| Canyon County | — | $300 | $13,588 | $5.62 |
| Elmore County | $34 2025 | $405 | $3,233 | $5.77 |
| Gem County | — | $143 | $4,014 | $5.49 |
| Owyhee County | $21 2023 | $254 | $2,025 | $2.53 |
| Median next door | — | $277 | $3,233 | $5.56 |
Counties that share a stretch of boundary. An older rent carries its year and stays out of the median.
Cite this page
AGSIST Farmland Atlas. Ada County, Idaho. Figures as of 2026-09-20, from USDA NASS, USDA RMA, USDA FSA, the U.S. Drought Monitor and NOAA. https://agsist.com/farmland-atlas/idaho/ada-countyEvery figure is a county average from the sources named below. Ranks count counties with 10,000 acres or more in farms, in the same survey year for rent, within the state. Methods: how each figure is built. Downloads: all counties, CSV.
Sources, dates and arithmetic
"Figures as of" is the date this page's numbers last changed; it moves only when a figure on the page does. Source files and their retrieval dates are listed on the data page.
Rent: USDA NASS Cash Rents Survey, county. Land value: Census of Agriculture, operators' estimate of land and buildings. Yield: NASS county corn yields, trend fitted here over every published year since 2008. Loss ratio: claims (indemnity) divided by total premium, USDA RMA Summary of Business, 1989 on, open crop year left out. Drought: U.S. Drought Monitor, weeks with half the county or more in D2 or worse. July lows: NOAA nClimDiv county monthly minimum temperature. A dash means the record does not carry the figure or the source withheld it; the reason is printed beside it.