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200 North Center
Casper, WY 82601
(307) 235-9200
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Natrona County Sheriff
Sheriff Gus Holbrook
Gus Holbrook

Undersheriff Mark Sellers

Mark C. Sellers

201 N. David
Second Floor
Casper, WY  82601

Ph: (307) 235-9282
Fx: (307) 235-9252

Emergency: 911

Office Hours
Monday - Friday
8:00 am - 5:00 pm

24 Hour Non-Emergency Ph: (307) 235-9282
The Natrona County Sheriff's Office is one of the largest law enforcement agencies in the State of Wyoming, serving a countywide population of about 65,000 citizens and covering about 5,500 square miles. We employ a total of 166 employees and of those 124 are sworn. We also operate one of the largest jails in the state with a total of 460 beds.  The Natrona County Sheriff's Office has resident deputies at Alcova Lake, Casper Mountain, and Midwest. The Sheriff's office also contracts with the Town of Bar Nunn for their law enforcement.

Our 911 System
As part of our community policing efforts and to promote your health and safety, we have a 911 system questionnaire which can be used to provide information about your health to be put on the enhanced  
911 computer.

Fax form to (307) 235-7512 or mail to:
Steve Freel
Casper Police Department
201 N. David
Casper, WY 82601

It will be used to assist medical, fire, or law enforcement in meeting your needs in the event of an emergency. The information is confidential and will be released only to those medical or fire personnel involved in assisting you. 

View active warrants on our Warrant Search Page.

Tell Us
Tell us about:
  • Drug activity
  • Burglaries
  • Child abuse / neglect
  • Sexual assault

When telling us about any of these activities, please include any information that might be helpful. Your information will be acted upon. You can remain anonymous if you contact us by phone. If you choose to email the sheriff, he will attempt to keep your name confidential.

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