Kettle Moraine Correctional Institution Overview
Kettle Moraine Correctional Institution, often shortened to KMCI, is operated by the Wisconsin Department of Corrections, Division of Adult Institutions. The official DOC page for KMCI lists the address as W9071 Forest Drive, Plymouth, WI 53073, and the phone number as 920-526-3244. The visiting packet also gives a physical address at W9071 Forest Drive, Glenbeulah, WI 53023 for directions and a mailing address of PO Box 31, Plymouth, WI 53073-0031. The research file identifies Joy Tassler as warden.
KMCI is a medium-security adult male prison for sentenced persons in DOC care. It is not a Sheboygan County jail, city lockup, federal prison, or ICE detention center. That distinction controls every lookup step. The county's current inmate PDF covers the adult county jail. KMCI custody is searched through the Wisconsin DOC Offender Locator and interpreted as state prison custody, not local pretrial housing.
The institution is adjacent to Kettle Moraine State Forest in Sheboygan County, about 10 miles west of Plymouth and 17 miles southeast of Fond du Lac. It opened in 1962 as Kettle Moraine Boys School and became a medium-security adult institution in 1974. Wisconsin statute section 302.02(1m)(i) treats KMCI and its precincts as being in Sheboygan County for circuit-court jurisdiction, giving the state prison a specific local legal anchor.
The Wisconsin DOC facility page is the matching image source for this page. It identifies KMCI as an adult institution and gives the official location, phone, warden, and facility description that separate state prison custody from the county jail roster.
Because the source is a DOC facility page rather than a county roster page, the image supports the prison-specific lookup path: search DOC for a sentenced person and use county resources only when the person may still be in local jail custody.
Kettle Moraine Correctional Institution Capacity and Population
KMCI's FY2025 annual report lists operating capacity at 783, current population at 1,139, budgeted staff at 335, a PIOC-to-staff ratio of 3.40 to 1, an 88-acre institution size, and an operating budget of $41,321,539.17. A Wisconsin DOC weekly population report dated 06/26/2026 listed Kettle Moraine design capacity at 783 and population at 1,136. Those figures are state prison figures, not Sheboygan County jail population numbers.
The comparison with county jail statistics matters. The Sheboygan County Adult Detention Center roster reported Total Housed 347 on 07/01/2026, while KMCI's DOC reports show more than 1,100 people in state prison custody. The systems count different populations: the jail covers local adult custody and short county commitments, while KMCI covers sentenced adult men in DOC care.
How to Look Up an Inmate at Kettle Moraine Correctional Institution
Use the Wisconsin DOC Offender Locator for KMCI. DOC says its Inmate and Offender Search locates people sentenced to state prison and housed in DOC facilities. A county jail ID from the Sheboygan PDF is not a DOC number, and the county PDF does not identify a person housed at KMCI. If DOC does not locate the person, they may be in a city or county jail administered separately, including the Sheboygan County Adult Detention Center.
- Open the Wisconsin DOC Offender Locator, not the Sheboygan County Current Inmate List.
- Search by name or DOC number. The DOC number is the strongest identifier when available.
- Review the profile for current facility and status, and confirm whether it lists Kettle Moraine Correctional Institution.
- Use WCCA for Sheboygan County court charges, sentence entries, and case history; use the county jail only if the person may still be locally held.
VINELink can still help with custody notifications, and WCCA can help connect a Sheboygan County conviction or sentence to a circuit-court case. Federal and immigration custody are separate again: the BOP Inmate Locator and ICE ODLS are the relevant tools for those systems, and no BOP or ICE detention facility was found in Sheboygan County in the official-source research.
Kettle Moraine Correctional Institution Address and Contact
KMCI uses state DOC contact channels. Visitors and families should use the prison's DOC phone number and the current DOC visiting packet before travel. The prison is in the Plymouth/Glenbeulah area, away from the Sheboygan County Law Enforcement Center and the Adult Detention Center. Do not go to the South 31st Street jail for a person who is already assigned to KMCI.
Kettle Moraine Correctional Institution
W9071 Forest Drive
Plymouth, WI 53073
920-526-3244
Wisconsin DOC medium-security adult male institution.
KMCI Mailing Address
PO Box 31
Plymouth, WI 53073-0031
Fax: 920-526-9320
Use current DOC mail rules before sending funds, property, or correspondence.
Visiting Someone at Kettle Moraine Correctional Institution
KMCI visiting is governed by Wisconsin DOC institution rules and the KMCI visiting packet, not Sheboygan County jail Securus visitation. State prison visits generally require approval, identity verification, scheduling, dress-code compliance, and security screening. The research file did not extract a complete current hourly schedule from the visiting packet, so travel plans should be confirmed directly with KMCI or the current DOC packet before leaving for Forest Drive.
Visitors should also remember that KMCI is an adult male medium-security institution. A person recently arrested in Sheboygan County may still be at the county jail awaiting court or transfer, while a person appearing in the DOC locator with KMCI as the facility is in state prison custody. Different rules apply to visits, phone calls, mail, and money.
| Day | Hours | Type |
|---|---|---|
| Monday-Friday | Confirm in current KMCI visiting packet | DOC prison visit, approval and scheduling required |
| Saturday | Confirm in current KMCI visiting packet | DOC prison visit, approval and scheduling required |
| Sunday | Confirm in current KMCI visiting packet | DOC prison visit, approval and scheduling required |
| Professional or legal contact | Coordinate through DOC institution procedures | Attorney or approved professional access |
Mail, Phone, and Money at Kettle Moraine Correctional Institution
Mail, money, and property for KMCI follow Wisconsin DOC statewide rules plus institution-specific addresses. That is different from the Sheboygan County jail's Securus Digital Mail Center and jail kiosk. DOC has separate statewide guidance for money, mail, and property, and KMCI's visiting packet gives the institution's mailing address. Use the DOC rules before sending anything because prisons enforce property limits, approved-vendor rules, and content restrictions.
Family and friends should use the DOC locator to confirm the person's facility before mailing. If the locator shows another DOC institution, do not send mail to KMCI. If the person is not found in DOC and may be newly arrested, use the county Current Inmate List PDF, jail phone, WCCA, and VINE instead.
| Service | Provider / Detail |
|---|---|
| Mail Address | KMCI, PO Box 31, Plymouth, WI 53073-0031, subject to DOC mail rules. |
| Phone / Video | Wisconsin DOC institution communication rules; not county jail Securus visitation. |
| Money Deposit | Use Wisconsin DOC money and property instructions, not the Sheboygan jail kiosk. |
Admission and Classification at Kettle Moraine Correctional Institution
KMCI does not book people directly from street arrests the way a county jail does. A person reaches DOC prison custody after court proceedings and sentencing. Someone sentenced from Sheboygan County Circuit Court may remain in the county jail briefly, then move to DOC reception and classification before assignment to a facility. Assignment can be KMCI or another institution depending on security, program, bed, gender, medical, and classification factors.
The DOC locator is the public tool for confirming state custody and institution assignment. WCCA remains the court-record source for the sentence, conviction, case number, filed charges, amended counts, bond events, warrants, and judgments. A DOC profile is not the full court case file, and a WCCA docket is not proof of current prison location unless it is paired with current DOC custody information.
About Kettle Moraine Correctional Institution
KMCI has a long state-prison history within Sheboygan County. It began in 1962 as Kettle Moraine Boys School and converted to an adult male medium-security institution in 1974. The DOC page says the transition included new buildings and security enhancements. In September 2001, Kettle Moraine hosted Wisconsin's first inmate job fair held inside a correctional institution, a local detail that fits its reentry and employment programming role.
The FY2025 annual report describes academic programming, vocational training, substance-use programming, Thinking for a Change, Windows to Work, DWD Job Center activity, Pell-supported associate degrees through MATC and MPTC, and an incarcerated veterans unit. The veterans unit has room for about 52 veterans and had 32 on the unit as of August 2025. The report also describes grievance handling through the Inmate Complaint Review System and family/reentry work such as Camp Reunite.
Note: Confirm DOC locator status, visiting approval, and the current KMCI packet before traveling to Forest Drive.