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
Richland 1257 1257 382
Vernon 712 712 47
Racine 34 34 2
Waushara 223 223 1
Jackson 225 225 2
Barron 136 136 0
Lincoln 164 164 0
Dunn 274 274 1
Green Lake 322 322 3
Chippewa 115 115 0
Door 48 48 0
Calumet 26 26 0
Milwaukee 21 21 0
Ashland 18 18 0
Columbia 534 534 112
Vilas 234 234 0
Marathon 431 431 1
Buffalo 420 420 4
Ozaukee 56 56 0
Dodge 137 137 4
Clark 166 166 0
Portage 401 401 2
Sawyer 94 94 0
St. Croix 78 78 0
Iron 25 25 0
Iowa 885 885 243
Sauk 858 858 247
Unknown 31 31 3
Oconto 157 157 0
Marinette 180 180 0
Washington 117 117 1
Lafayette 173 173 44
Trempealeau 288 288 4
Shawano 336 336 2
Sheboygan 170 170 0
Forest 39 39 0
Bayfield 80 80 0
Taylor 83 83 0
Monroe 676 676 7
Waukesha 348 348 8
Wood 184 184 0
Juneau 322 322 35
Walworth 120 120 18
Rock 153 153 31
Outagamie 80 80 0
Brown 83 83 0
Oneida 421 421 0
Price 47 47 0
Green 191 191 37
Kenosha 24 24 0
Kewaunee 12 12 0
Eau Claire 263 263 9
Adams 343 343 23
Jefferson 175 175 10
Manitowoc 63 63 0
Marquette 578 578 6
La Crosse 159 159 0
Rusk 88 88 0
Polk 252 252 1
Fond du Lac 141 141 0
Dane 941 941 171
Waupaca 356 356 0
Grant 489 489 89
Winnebago 76 76 0
Crawford 498 498 37
Pepin 52 52 0
Washburn 180 180 0
Langlade 169 169 0
Douglas 60 60 0
Florence 43 43 0
Pierce 57 57 0
Burnett 152 152 0
Totals: