Where CWD Occurs

Purpose

Chronic Wasting Disease has spread to more than half of the states in the continental United States since it was first identified in wild deer in 1981. CDC and state public health authorities track where cases have occurred. With awareness of where cases are reported, people who live or hunt in those areas can take steps to protect themselves from infected animals.
A mule deer stands in a field in front of some trees.

CWD among free-ranging animals by county

As of April 2025, Chronic Wasting Disease has been reported in 36 states in the United States. Cases have occurred in all four regions of the country (West, Midwest, South, Northeast). Animals affected include free-ranging deer, elk, reindeer and moose.

In addition, CWD has been reported in reindeer and/or moose in four Canadian provinces, Norway, Finland and Sweden. A small number of cases have also been imported into South Korea. The disease has also been found in farmed deer and elk.

CWD was identified in captive deer in Colorado in the late 1960s and wild deer in 1981. It spread more widely in Colorado and southern Wyoming in the 1990s. CWD has been found in many other areas since 2000. CDC expects the disease to continue to spread in the continental United States.

It is possible that CWD may also occur in other states but cases haven't been detected yet. Once CWD is established in an area, the CWD proteins (prions) stay in the soil and water for years.

Counties (by state)

  1. Lauderdale

  1. Boone
  2. Benton
  3. Carroll
  4. Conway
  5. Craighead
  6. Crawford
  7. Franklin
  8. Independence
  9. Johnson
  10. Logan
  11. Madison
  12. Marion
  13. Newton
  14. Pope
  15. Randolph
  16. Searcy
  17. Sebastian
  18. Scott
  19. Stone
  20. Union
  21. Van Buren
  22. Washington

  1. Inyo
  2. Madera

  1. Adams
  2. Boulder
  3. Delta
  4. Douglas
  5. Eagle
  6. El Paso
  7. Garfield
  8. Grand
  9. Jackson
  10. Jefferson
  11. Kit Carson
  12. Larimer
  13. Logan
  14. Mesa
  15. Moffat
  16. Montrose
  17. Morgan
  18. Park
  19. Phillips
  20. Pueblo
  21. Rio Blanco
  22. Routt
  23. Sedgwick
  24. Summit
  25. Washington
  26. Weld
  27. Yuma

  1. Holmes

  1. Lanier

  1. Adams
  2. Boundary
  3. Idaho

  1. Boone
  2. Bureau
  3. Carroll
  4. Cook
  5. De Kalb
  6. Du Page
  7. Ford
  8. Grundy
  9. Jo Daviess
  10. Kane
  11. Kankakee
  12. Kendall
  13. Lake
  14. La Salle
  15. Lee
  16. Livingston
  17. McHenry
  18. Ogle
  19. Stephenson
  20. Will
  21. Winnebago

  1. La Grange
  2. Posey

  1. Allamakee
  2. Appanoose
  3. Clayton
  4. Davis
  5. Decatur
  6. Des Moines
  7. Dubuque
  8. Fayette
  9. Fremont
  10. Greene
  11. Grundy
  12. Guthrie
  13. Howard
  14. Jackson
  15. Jasper
  16. Jones
  17. Lucas
  18. Marshall
  19. Monroe
  20. Muscatine
  21. Shelby
  22. Tama
  23. Wayne
  24. Winneshiek
  25. Woodbury

  1. Barton
  2. Bourbon
  3. Butler
  4. Cheyenne
  5. Clark
  6. Clay
  7. Cowley
  8. Decatur
  9. Edwards
  10. Ellis
  11. Ellsworth
  12. Finney
  13. Ford
  14. Franklin
  15. Gove
  16. Graham
  17. Gray
  18. Hamilton
  19. Haskell
  20. Hodgeman
  21. Jackson
  22. Jewell
  23. Kearny
  24. Kingman
  25. Kiowa
  26. Lane
  27. Lincoln
  28. Logan
  29. McPherson
  30. Marshall
  31. Meade
  32. Mitchell
  33. Ness
  34. Norton
  35. Osborne
  36. Pawnee
  37. Phillips
  38. Pratt
  39. Rawlins
  40. Reno
  41. Republic
  42. Rice
  43. Riley
  44. Rooks
  45. Rush
  46. Russell
  47. Saline
  48. Scott
  49. Sedgwick
  50. Seward
  51. Shawnee
  52. Sheridan
  53. Sherman
  54. Smith
  55. Stafford
  56. Stevens
  57. Sumner
  58. Thomas
  59. Trego
  60. Wabaunsee
  61. Wallace
  62. Washington
  63. Wichita
  64. Woodson

  1. Ballard

  1. Catahoula
  2. Tensas

  1. Allegany
  2. Baltimore
  3. Carroll
  4. Frederick
  5. Montgomery
  6. Washington

  1. Clinton
  2. Dickinson
  3. Eaton
  4. Gratiot
  5. Hillsdale
  6. Ingham
  7. Ionia
  8. Isabella
  9. Jackson
  10. Kent
  11. Midland
  12. Montcalm
  13. Ogemaw

  1. Beltrami
  2. Crow Wing
  3. Dakota
  4. Fillmore
  5. Houston
  6. Hubbard
  7. Itasca
  8. Olmsted
  9. Polk
  10. Scott
  11. Traverse
  12. Wabasha
  13. Winona

  1. Alcorn
  2. Benton
  3. Claiborne
  4. De Soto
  5. Harrison
  6. Issaquena
  7. Lafayette
  8. Marshall
  9. Panola
  10. Pontotoc
  11. Tallahatchie
  12. Tate
  13. Tippah
  14. Tishomingo
  15. Tunica
  16. Warren

  1. Adair
  2. Barry
  3. Barton
  4. Carroll
  5. Cedar
  6. Chariton
  7. Christian
  8. Clark
  9. Cole
  10. Crawford
  11. Dallas
  12. Franklin
  13. Gasconade
  14. Grundy
  15. Hickory
  16. Howell
  17. Jasper
  18. Jefferson
  19. Linn
  20. Livingston
  21. Macon
  22. Maries
  23. Mercer
  24. Oregon
  25. Osage
  26. Perry
  27. Polk
  28. Pulaski
  29. Putnam
  30. Randolph
  31. Ray
  32. St Clair
  33. Ste. Genevieve
  34. St Francois
  35. Scotland
  36. Stone
  37. Sullivan
  38. Taney
  39. Texas
  40. Washington

  1. Beaverhead
  2. Big Horn
  3. Blaine
  4. Carbon
  5. Cascade
  6. Custer
  7. Daniels
  8. Fallon
  9. Flathead
  10. Gallatin
  11. Glacier
  12. Hill
  13. Liberty
  14. Lincoln
  15. McCone
  16. Madison
  17. Park
  18. Phillips
  19. Powder River
  20. Powell
  21. Prairie
  22. Rosebud
  23. Sheridan
  24. Treasure
  25. Valley
  26. Yellowstone

  1. Adams
  2. Antelope
  3. Arthur
  4. Banner
  5. Blaine
  6. Boone
  7. Box Butte
  8. Buffalo
  9. Butler
  10. Cass
  11. Cedar
  12. Chase
  13. Cherry
  14. Cheyenne
  15. Custer
  16. Dawes
  17. Dawson
  18. Deuel
  19. Dundy
  20. Fillmore
  21. Franklin
  22. Frontier
  23. Furnas
  24. Gage
  25. Garden
  26. Gosper
  27. Grant
  28. Greeley
  29. Hall
  30. Harlan
  31. Hayes
  32. Hitchcock
  33. Holt
  34. Hooker
  35. Howard
  36. Jefferson
  37. Johnson
  38. Keith
  39. Keya Paha
  40. Kimball
  41. Knox
  42. Lancaster
  43. Lincoln
  44. Loup
  45. McPherson
  46. Madison
  47. Merrick
  48. Morrill
  49. Nance
  50. Otoe
  51. Pawnee
  52. Perkins
  53. Phelps
  54. Platte
  55. Polk
  56. Red Willow
  57. Richardson
  58. Rock
  59. Saline
  60. Scotts Bluff
  61. Seward
  62. Sheridan
  63. Sioux
  64. Thayer
  65. Thomas
  66. Valley
  67. Webster
  68. York

  1. Dona Ana
  2. Otero
  3. Socorro

  1. Oneida

  1. Cumberland
  2. Franklin
  3. Johnston
  4. Stokes
  5. Surry
  6. Wilkes
  7. Yadkin

  1. Adams
  2. Bottineau
  3. Divide
  4. Grant
  5. McKenzie
  6. Sioux
  7. Williams

  1. Allen
  2. Hardin
  3. Marion
  4. Wyandot

  1. Texas
  2. Woodward

  1. Armstrong
  2. Bedford
  3. Blair
  4. Cambria
  5. Carbon
  6. Clearfield
  7. Cumberland
  8. Dauphin
  9. Franklin
  10. Fulton
  11. Huntingdon
  12. Indiana
  13. Jefferson
  14. Juniata
  15. Luzerne
  16. Perry
  17. Snyder
  18. Somerset
  19. Westmoreland

  1. Bennett
  2. Buffalo
  3. Butte
  4. Corson
  5. Custer
  6. Fall River
  7. Haakon
  8. Harding
  9. Jackson
  10. Lawrence
  11. Lyman
  12. Meade
  13. Mellette
  14. Pennington
  15. Perkins
  16. Stanley
  17. Sully
  18. Tripp
  19. Union
  20. Ziebach

  1. Chester
  2. Crockett
  3. Dyer
  4. Fayette
  5. Gibson
  6. Hardeman
  7. Hardin
  8. Haywood
  9. Henderson
  10. Henry
  11. Lauderdale
  12. Lewis
  13. McNairy
  14. Madison
  15. Shelby
  16. Tipton
  17. Weakley

  1. Bexar
  2. Coleman
  3. Dallam
  4. El Paso
  5. Hartley
  6. Hudspeth
  7. Lubbock
  8. Medina
  9. Val Verde

  1. Carbon
  2. Daggett
  3. Davis
  4. Grand
  5. Salt Lake
  6. San Juan
  7. Sanpete
  8. Uintah
  9. Utah

  1. Carroll
  2. Clarke
  3. Culpepper
  4. Fairfax
  5. Fauquier
  6. Floyd
  7. Frederick
  8. Loudoun
  9. Madison
  10. Montgomery
  11. Pulaski
  12. Rappahannock
  13. Shenandoah
  14. Tazewell
  15. Warren

  1. Spokane

  1. Berkeley
  2. Grant
  3. Hampshire
  4. Hardy
  5. Jefferson
  6. Mineral
  7. Morgan

  1. Adams
  2. Buffalo
  3. Columbia
  4. Crawford
  5. Dane
  6. Dodge
  7. Dunn
  8. Eau Claire
  9. Fond du Lac
  10. Grant
  11. Green
  12. Green Lake
  13. Iowa
  14. Jackson
  15. Jefferson
  16. Juneau
  17. Kenosha
  18. Lafayette
  19. Langlade
  20. Lincoln
  21. Manitowoc
  22. Marathon
  23. Marquette
  24. Milwaukee
  25. Monroe
  26. Oconto
  27. Oneida
  28. Polk
  29. Portage
  30. Racine
  31. Richland
  32. Rock
  33. Sauk
  34. Shawano
  35. Sheboygan
  36. Trempealeau
  37. Vernon
  38. Vilas
  39. Walworth
  40. Washburn
  41. Washington
  42. Waukesha
  43. Waupaca
  44. Waushara
  45. Winnebago
  46. Wood

  1. Albany
  2. Big Horn
  3. Campbell
  4. Carbon
  5. Converse
  6. Crook
  7. Fremont
  8. Goshen
  9. Hot Springs
  10. Johnson
  11. Laramie
  12. Lincoln
  13. Natrona
  14. Niobrara
  15. Park
  16. Platte
  17. Sheridan
  18. Sublette
  19. Sweetwater
  20. Teton
  21. Washakie
  22. Weston
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Content Source:
National Center for Emerging and Zoonotic Infectious Diseases (NCEZID)