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 2019 CWD year would be April 1st, 2019 through March 31st, 2020.

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 Game Farm deer and elk, please contact the Wisconsin Department of Agriculture, Trade, and Consumer Protection (phone 608-224-4872, fax 608-224-4871).


County # Sampled # Analyzed Positive for CWD
Calumet 14 14 0
Rock 138 138 15
Langlade 136 136 0
Ashland 37 37 0
Marinette 289 289 0
Green Lake 126 126 0
Door 19 19 0
Chippewa 215 215 0
Grant 672 672 61
Sheboygan 170 170 1
Sauk 1006 1006 262
Lincoln 282 282 0
Price 275 275 0
Marathon 418 418 1
Saint Croix 143 143 0
Forest 56 56 0
Waushara 110 110 0
Rusk 146 146 0
Milwaukee 81 81 0
Racine 43 43 0
Eau Claire 385 385 3
Dane 1157 1157 154
Dunn 454 454 1
Juneau 375 375 12
Waukesha 331 331 9
Wood 128 128 0
Kewaunee 21 21 0
Columbia 629 629 66
Lafayette 215 215 28
Pepin 77 77 0
Kenosha 24 24 0
Shawano 281 281 0
Burnett 241 241 0
Ozaukee 65 65 0
Waupaca 198 198 0
Walworth 133 133 10
Brown 36 36 0
Pierce 56 56 0
Winnebago 24 24 0
Crawford 446 446 3
Richland 1458 1458 246
Barron 179 179 0
Clark 222 222 0
Marquette 370 370 2
Green 149 149 24
Adams 362 361 6
Iron 68 68 0
Oconto 157 157 0
Washington 193 193 0
Outagamie 45 45 0
Unknown 20 20 1
Iowa 1491 1491 419
Fond du Lac 39 39 0
Vernon 800 800 8
Jefferson 161 161 3
Sawyer 183 183 0
Vilas 175 175 0
Washburn 214 214 0
Florence 153 153 0
La Crosse 175 175 0
Bayfield 190 190 0
Dodge 168 168 0
Taylor 104 104 0
Manitowoc 46 46 0
Jackson 183 183 0
Buffalo 422 422 0
Trempealeau 270 270 0
Portage 429 429 1
Oneida 470 470 2
Monroe 438 438 0
Polk 222 222 0
Douglas 152 152 0
Menominee 8 8 0
Totals: