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