Sioux County Sheriff

To serve & Protect


As a law enforcement agency, called to serve the public, we continue to work on building trust with the people we serve.

We are committed to our Vision Statement:

"The Sioux County Sheriff’s Office will be dedicated to preserving a high quality of life and the enhancement of public safety. We will be committed to serve with professionalism, diligence, respect, integrity and concern for all people. We will foster an environment in which the sheriff’s office and the community work together as catalysts for positive community development."

Our men and women enter this profession with a sincere desire to preserve and respect the sanctity of life.

We pledge that we will continue to offer our hand to build community partnerships and maintain an environment of openness and respect for all whom we serve.

  • Sheriff Dan Altena



Latest news & Announcements

Plan to attend the Sensory Friendly First Responder Meet and Greet

July 29, 2022

Sioux County Emergency Management is hosting a First Responder Meet and Greet. This event will take place at the Orange City Fire Department on Tuesday, August 2, from 6pm-8pm. For some children with disabilities, the bright lights and loud sounds from emergency vehicles can be very overwhelming. Learning to interact with emergency responders is just … Read more

Read More

Sheriff Altena to retire

July 12, 2022

To the People of Sioux County: I will be retiring from my position as Sioux County Sheriff, effective August 31, 2022. My chief goal as a law enforcement officer has always been to help maintain the high quality of life that we enjoy in Sioux County by providing the very best public safety possible. I … Read more

Read More

Drowning near Rock Valley – July 4 *Updated: victim name released*

July 4, 2022

UPDATED RELEASE The Sioux County Sheriff’s Office has released the name of the drowning victim from the incident that occurred on Monday, July 4, at 3:56 p.m. Aldo Tomas-DeLeon, age 19, of Rock Valley, IA, was the person swimming at the Groeneweg Pond along 290th Street, one mile north of Rock Valley, when he went underwater. … Read more

Read More

Sioux County Sheriff’s Office to host Basic School Resource Officer (SRO) training – August 8-12

June 27, 2022

The Sioux County Sheriff’s Office is excited to announce that we will be hosting a National Association of School Resource Officers (NASRO) Basic School Resource Officer training course. This training will take place August 8 – 12, 2022. The National Association of School Resource Officers (NASRO,) the world’s leader in school-based policing, is dedicated to … Read more

Read More

Iowa changes ATV/UTV laws effective July 1

June 22, 2022

Effective July 1, All terrain vehicle (ATV) and utility terrain vehicle (UTV) users will now be able to ride in any of Iowa’s 99 counties, with a few restrictions. Captain Jamie Van Voorst says, “An ATV is a vehicle that can be straddled by a single rider, while a UTV is designed with a cabin … Read more

Read More

Public Safety Reminder: Move Over for emergency vehicles, safely *VIDEO*

May 31, 2022

Please take a moment to watch the below video for a good safety reminder to not only move over for emergency vehicles that are stopped with its flashing lights on, but to slow down and please do it safely.   Recently, Sioux County Deputy Sheriff Jessica Dorhout was engaged in a traffic stop when her … Read more

Read More