The number of registered sex offenders living in Waukesha County in January remained unchanged compared to December 2025, according to the Wisconsin Sex Offender Registry.
Overall, Waukesha County had 67 registered sex offenders in January.
According to the Registry, 19 of these sex offenders were incarcerated at the time.
The Wisconsin Department of Corrections manages the state’s Sex Offender Registry, which requires individuals convicted of certain sex offenses to register and keep their information current. Registrants must provide details such as name, address, and offense, and are obligated to report any changes so the registry remains accurate. The registry is updated regularly and is accessible to the public through the DOC’s online database.
Wisconsin, which ranks 10th for the overall number of sex offenders, ranks fifth for sex offenders per 100,000 residents. Nationwide, more than 795,000 people were listed on sex offender registries as of August 2024, an increase of about 8,000 from 2023.
Frequently updated information about sex offenders in Wisconsin can be found online here.
| Offender | Crime |
|---|---|
| Adam T. Rosman | Sexual Exploitation of Child |
| Allen E. Schlafer | Second-Degree Sexual Assault of a Child |
| Andrew M. Chertack | Exposing Genitals/Pubic Area/Intimate Parts to a Child |
| Anthony R. Davis | Possession of Child Pornography |
| Brenda M. Switala | Second-Degree Sexual Assault of a Child |
| Brent Biesterfeld | Second-Degree Sexual Assault of a Child |
| Carlos Medina | First-Degree Sexual Assault of a Child |
| Christopher A. Tat | Possession of Child Pornography |
| Christopher John Whitham | Second-Degree Sexual Assault |
| Curtis R. Hansen | Second-Degree Sexual Assault of a Child |
| Daine A. Marisch | Possession of Child Pornography |
| Daniel E. Boldt | Second-Degree Sexual Assault of a Child |
| David H. Ninnemann | Lewd, Lascivious Behavior-in Public |
| Dean R. Larsen | Possession of Child Pornography |
| Deon C. McLaughlin | Child Enticement |
| Doug Wehse | First-Degree Sexual Assault of a Child |
| Dylan I. Hein | Fourth-Degree Sexual Assault |
| Eric D. Lyon | Receipt of Child Pornography |
| Erik J. Heun | Possession of Child Pornography |
| Ethan D. Kopiness | Exposing a Child to Harmful Materials |
| Evan O. Radke | Child Enticement-Cause Mental/Bodily Harm |
| Gary R. Arndt | First-Degree Sexual Assault of a Child |
| Gary B. Boehm | First-Degree Sexual Assault of a Child |
| Gerald L. Carpenter | First-Degree Sexual Assault of a Child |
| Gerald W. Niegelsen | Second-Degree Sexual Assault |
| Gregory P. Glidden | Second-Degree Sexual Assault of a Child |
| James W. Johnson | Third-Degree Sexual Assault |
| James I. Marshall | Posses/Distribute Recording of Nudity |
| James Franc Pirc | Capture an Image of Nudity |
| James A. Sund | Second-Degree Sexual Assault |
| Jeffrey R. Marohl | Second-Degree Sexual Assault of a Child |
| John Ward | Second-Degree Sexual Assault of a Child |
| Jon C. Hanson | Transporting Child Pornography |
| Jonathan J. Pulliam | Sexual Assault of a Child |
| Jordan J. Fischer | Possession of Child Pornography |
| Justin P. Czemierys | Possession of Child Pornography |
| Karl Becker | First-Degree Sexual Assault of a Child |
| Karsten W. Koch | Repeated Acts of Sexual Assault Against Same Child, Second-Degree Sexual Assault of a Child |
| Keegan M. Kelley | Second-Degree Sexual Assault of a Child |
| Kristopher D. Strock | Possession of Child Pornography |
| Kurt S. Hoff | First-Degree Sexual Assault of a Child |
| Mario R. Serra | Use of a Computer to Facilitate a Child Sexual Crime |
| Matthew T. Bohmann | First-Degree Sexual Assault of a Child, Repeated Acts of Sexual Assault Against Same Child |
| Matthew A. Pagel | Sexual Assault of a Student by School Staff |
| Matthew Sites | Third-Degree Sexual Assault |
| Maximilan J. Dietrich | Possession of Child Pornography |
| Michael Liberman | Second-Degree Sexual Assault of a Child |
| Michael Sosinski | Use of a Computer to Facilitate a Child Sexual Crime |
| Michelle Krause | Second-Degree Sexual Assault of a Child |
| Milton L. Dunham | Second-Degree Sexual Assault of a Child |
| Nicholas Micahel-ray Weaver | Child Enticement |
| Philip W. Lyon | Possession of Child Pornography |
| Randy J. Gondek | First-Degree Sexual Assault of a Child, First-Degree Sexual Assault |
| Richard L. Reid | Exposing a Child to Harmful Materials, Possession of Child Pornography |
| Ricky R. Ennis | First-Degree Sexual Assault |
| Robert J. Meyers | Sexual Assault of a Child |
| Ronald L. Dunn | First-Degree Sexual Assault of a Child |
| Russell J. Sawatzki | First-Degree Sexual Assault of a Child |
| Scott M. Schrimpf | Second-Degree Sexual Assault of a Child |
| Scott T. Trajkovski | Second-Degree Sexual Assault of a Child |
| Steven C. Swiskoski | Second-Degree Sexual Assault of a Child |
| Terry L. Snyder | Second-Degree Sexual Assault of a Child |
| Thomas G. Schulze | Second-Degree Sexual Assault of a Child |
| Thomas J. Toth | Second-Degree Sexual Assault of a Child |
| Timothy Albiniak | First-Degree Sexual Assault of a Child |
| Troy D. Krainer | Second-Degree Sexual Assault of a Child |
| Wayne D. Irwin | Second-Degree Sexual Assault |
