Maple syrup in Iowa, county by county
- Maple farms, 2022
- 87
- +64% since 2017
- Taps, 2022
- 23,903
- +73% since 2017
- Gallons of syrup
- 8,096
- 0.34 gal per tap
- Counties with a page
- 6
- of 26 with maple farms
Reading the map
Where Iowa's sugaring happens
Chickasaw County alone holds 2,620 taps (11% of the state). Counties shaded lightest have the fewest taps; grey counties reported fewer than five maple farms and have no atlas page. Click any county for its season calendar.
USDA publishes no season dates for Iowa, so the county dates below are the unadjusted weather signal. In neighboring states with records, producers reported seasons running one to three weeks later than this rule, so treat these as early-side estimates.
Every county
Iowa maple production and season dates by county
| County | Farms | Taps | Gallons | Taps vs 2017 | Sap usually runs |
|---|---|---|---|---|---|
| Chickasaw | 4 | 2,620 | 540 | — | fewer than 5 farms · no page |
| Winneshiek | 6 | 2,314 | 888 | — | Mar 4 – Apr 3 |
| Fayette | 4 | 2,000 | 510 | — | fewer than 5 farms · no page |
| Johnson | 9 | 370 | 47 | — | Feb 20 – Mar 26 |
| Floyd | 5 | 242 | 27 | — | Mar 4 – Apr 2 |
| Linn | 3 | 228 | 27 | — | fewer than 5 farms · no page |
| Buchanan | 3 | 85 | 14 | — | fewer than 5 farms · no page |
| Bremer | 3 | 70 | 9 | — | fewer than 5 farms · no page |
| Hardin | 5 | 50 | 11 | — | Feb 27 – Mar 31 |
| Story | 4 | 33 | 10 | — | fewer than 5 farms · no page |
| Marshall | 4 | 32 | 4 | — | fewer than 5 farms · no page |
| Howard | 3 | 24 | 5 | — | fewer than 5 farms · no page |
| Allamakee | 0 | 0 | 0 | — | fewer than 5 farms · no page |
| Benton | 0 | 0 | 0 | — | fewer than 5 farms · no page |
| Boone | 0 | 0 | 0 | -100% | fewer than 5 farms · no page |
| Cedar | 0 | 0 | 0 | — | fewer than 5 farms · no page |
| Clarke | 0 | 0 | 0 | — | fewer than 5 farms · no page |
| Dallas | 0 | 0 | 0 | — | fewer than 5 farms · no page |
| Delaware | 0 | 0 | 0 | — | fewer than 5 farms · no page |
| Des Moines | 0 | 0 | 0 | — | fewer than 5 farms · no page |
| Jefferson | 0 | 0 | 0 | — | fewer than 5 farms · no page |
| Jones | 0 | 0 | 0 | — | fewer than 5 farms · no page |
| Mahaska | 0 | 0 | 0 | — | fewer than 5 farms · no page |
| Marion | 0 | 0 | 0 | — | fewer than 5 farms · no page |
| Mitchell | 0 | 0 | 0 | — | fewer than 5 farms · no page |
| Montgomery | 0 | 0 | 0 | — | fewer than 5 farms · no page |
| Poweshiek | 0 | 0 | 0 | — | fewer than 5 farms · no page |
| Scott | 0 | 0 | 0 | — | fewer than 5 farms · no page |
| Shelby | 0 | 0 | 0 | — | fewer than 5 farms · no page |
| Van Buren | 0 | 0 | 0 | — | fewer than 5 farms · no page |
| Wayne | 0 | 0 | 0 | — | fewer than 5 farms · no page |
| Woodbury | 0 | 0 | 0 | — | fewer than 5 farms · no page |
| Clayton | 8 | withheld | withheld | — | Mar 3 – Apr 3 |
| Dubuque | 8 | withheld | withheld | — | Feb 26 – Mar 29 |
| Clay | 2 | withheld | withheld | — | fewer than 5 farms · no page |
| Kossuth | 2 | withheld | withheld | — | fewer than 5 farms · no page |
| Tama | 2 | withheld | withheld | — | fewer than 5 farms · no page |
| Union | 2 | withheld | withheld | — | fewer than 5 farms · no page |
| Worth | 2 | withheld | withheld | — | fewer than 5 farms · no page |
| Wright | 2 | withheld | withheld | — | fewer than 5 farms · no page |
| Jackson | 1 | withheld | withheld | — | fewer than 5 farms · no page |
| Keokuk | 1 | withheld | withheld | — | fewer than 5 farms · no page |
| Lyon | 1 | withheld | withheld | — | fewer than 5 farms · no page |
| Monona | 1 | withheld | withheld | — | fewer than 5 farms · no page |
| Polk | 1 | withheld | withheld | — | fewer than 5 farms · no page |
| Washington | 1 | withheld | withheld | — | fewer than 5 farms · no page |
| Iowa total | 87 | 23,903 | 8,096 | +73% |
“Withheld” = USDA suppressed the figure to avoid disclosing individual operations. County totals need not sum to the state total for that reason.
About this page
Production figures are copied, unchanged, from Table 37 of the 2022 Census of Agriculture county volume for Iowa. Season dates come from our county maple atlas: 36 seasons of daily temperatures at each county seat scored with the freeze-thaw rule behind our live forecast, calibrated against 117 state-seasons of USDA-reported dates. How the atlas is built, and the downloadable dataset →
Sources · 3
- 1.2022 Census of Agriculture, County Level Data — Iowa, Table 37: Maple Syrup, 2022 and 2017 · USDA National Agricultural Statistics Service
- 2.USDA NASS maple syrup reports — approximate average season opened and closed dates, 2011–2022 · USDA National Agricultural Statistics Service (mirrored by the University of Vermont)
- 3.PRISM daily temperature grids (AN81d, 4 km), accessed 2026-10-05 · PRISM Group, Oregon State University, https://prism.oregonstate.edu
FAQ
Iowa maple questions
- Which county in Iowa makes the most maple syrup?
- Chickasaw County, with 2,620 taps and 540 gallons of syrup across 4 farms in the 2022 Census of Agriculture, about 11% of the state's taps. USDA withheld totals for 14 counties to protect individual farms, so the ranking covers published counties.
- How many maple producers are there in Iowa?
- The 2022 Census of Agriculture counted 87 farms producing maple syrup in Iowa (53 in 2017), with 23,903 taps and 8,096 gallons of syrup. The Census counts farms, so backyard sugarmakers who don't sell are not included.
- Where does the sap run first in Iowa?
- By our weather record, Johnson County (Iowa City) typically starts around February 20, while Winneshiek County (Decorah) starts around March 4, a spread of about 12 days across the state.
Other states
The county atlas elsewhere
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Know when Iowa's sap will run
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