Winnebago County WI Jail is located in the city of Oshkosh, Wisconsin which has a population of 66,083 (as of 2015) residents. Winnebago County WI Jail began processing inmates once the original construction was completed and service started in 1850 but may have been expanded or renovated since that time, to accommodate the growing prison population. Prisoners are housed in separate areas depending on the crimes they committed, their current risk assessment, and their behavior. This facility is currently under the supervision of Sheriff John Matz and houses male and female offenders.

If you have a family or loved one that is currently incarcerated at Winnebago County WI Jail, the first thing you should do is contact the prison for information on the inmate. Based on the information you are provided, you would then contact either a criminal defense lawyer or a bail bond service. They will provide you with vital information which can be used to defend an individual and in a lot of cases get them released from detention while awaiting trial.

Winnebago County WI Jail Facility and Inmate Contact Information:

Phone Number to Reach this Facility is:

920-236-7380 920-727-2888

Fax Number for Winnebago County WI Jail is:

920-424-7797

Email Address for this Facility:

[email protected]

Send Mail to the Facility (not inmates):

Winnebago County WI Jail
4311 Jackson Street
Oshkosh, WI 54901-9760

To Send Mail to an Inmate at Winnebago County WI Jail:

(please get a list of acceptable mail from the facility)

Winnebago County WI Jail
Inmate Name, Inmate ID #
4311 Jackson Street
Oshkosh, WI 54901-9760

Winnebago County Jail Inmate Search