This table shows available CWD test results for the selected year from all counties where deer tissue samples have been collected. Results are sorted alphabetically by county name. Results for an individual year are for the CWD year, which runs from April 1st through March 31st. For example, the results for the 2025 CWD year would be April 1st, 2025 through March 31st, 2026.

See data for all years

See the data for CWD Year: 

If a county name does not appear on the list, then zero deer were sampled from this location in the selected CWD year.

Please take note of the following when interpreting data for any county where Positive test results have been obtained. CWD occurrence in any County is likely to be restricted to one or more local (isolated) areas. Reports of CWD occurrence may not imply overall prevalence in a county. Detailed information on county statistics is provided when a specific County name is selected.

Note that the DNR data reported here only includes wild deer. For information on test results for farm-raised deer and elk, please contact the DATCP Home Farm-Raised Deer Program (wi.gov) (phone 608-224-4872).


County # Sampled # Analyzed Positive for CWD
Richland 33 29 7
Vernon 28 23 2
Waushara 13 11 0
Jackson 7 5 0
Barron 12 11 0
Lincoln 6 5 0
Dunn 31 31 1
Door 1 1 0
Green Lake 4 3 0
Ashland 2 2 0
Calumet 2 1 0
Chippewa 3 3 0
Milwaukee 4 4 0
Ozaukee 2 1 0
Columbia 18 16 2
Vilas 20 18 0
Buffalo 11 10 0
Clark 3 3 0
Marathon 23 23 0
Dodge 5 4 0
Iowa 14 12 0
Sawyer 3 3 0
Portage 22 21 0
Sauk 36 33 11
St. Croix 3 3 0
Unknown 0 0 0
Sheboygan 10 9 2
Washington 5 4 0
Trempealeau 11 10 0
Oconto 5 5 1
Lafayette 2 1 0
Marinette 11 10 0
Forest 0 0 0
Shawano 25 23 0
Bayfield 1 1 0
Taylor 3 2 0
Monroe 24 22 1
Wood 24 21 0
Walworth 4 3 0
Juneau 26 24 4
Rock 7 7 3
Outagamie 9 8 0
Oneida 18 12 1
Brown 12 12 0
Waukesha 11 6 1
Green 6 5 2
Kewaunee 3 3 0
Price 1 1 0
Kenosha 0 0 0
Eau Claire 10 8 0
Jefferson 3 1 0
Manitowoc 10 7 0
Marquette 13 11 1
Adams 11 11 1
La Crosse 9 9 0
Polk 22 18 0
Fond du Lac 8 5 0
Waupaca 18 14 0
Pierce 1 1 0
Washburn 13 13 0
Dane 20 19 1
Burnett 7 7 0
Crawford 10 8 0
Douglas 1 1 0
Grant 1 0 0
Totals: