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 2023 CWD year would be April 1st, 2023 through March 31st, 2024.

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
Barron 136 136 0
Richland 1256 1256 381
Waushara 222 222 1
Vernon 711 711 47
Lincoln 164 164 0
Jackson 225 225 2
Racine 34 34 2
Dunn 273 273 1
Green Lake 322 322 3
Chippewa 115 115 0
Ashland 18 18 0
Calumet 26 26 0
Door 48 48 0
Milwaukee 21 21 0
Marathon 431 431 1
Columbia 533 533 112
Buffalo 420 420 4
Clark 166 166 0
Dodge 137 137 4
Vilas 234 234 0
Ozaukee 56 56 0
Sauk 853 853 247
Sawyer 94 94 0
Portage 400 400 2
Iron 24 24 0
Iowa 885 885 243
St. Croix 78 78 0
Unknown 31 31 3
Oconto 157 157 0
Marinette 180 180 0
Lafayette 173 173 44
Bayfield 80 80 0
Washington 117 117 1
Shawano 335 335 2
Trempealeau 288 288 4
Taylor 83 83 0
Sheboygan 170 170 0
Forest 39 39 0
Waukesha 348 348 8
Green 191 191 37
Monroe 676 676 7
Juneau 322 322 35
Oneida 421 421 0
Rock 153 153 31
Wood 184 184 0
Brown 83 83 0
Price 47 47 0
Walworth 120 120 18
Outagamie 80 80 0
Kenosha 24 24 0
Kewaunee 12 12 0
Marquette 578 578 6
Eau Claire 263 263 9
Adams 342 342 23
Polk 252 252 1
Manitowoc 63 63 0
La Crosse 159 159 0
Rusk 88 88 0
Fond du Lac 141 141 0
Jefferson 175 175 10
Pepin 52 52 0
Waupaca 356 356 0
Crawford 498 498 37
Langlade 169 169 0
Dane 940 940 171
Washburn 180 180 0
Burnett 152 152 0
Douglas 60 60 0
Grant 489 489 89
Winnebago 76 76 0
Pierce 57 57 0
Florence 43 43 0
Totals: