Canada · Ontario · Bath
Millhaven Institution
Data is aggregated from public sources and may be incomplete or out of date. Always verify with primary sources before acting on any figure. See data sources.
For families
How to send mail, money, and visit Millhaven Institution
Step-by-step guidance using the Canada system — addresses, money services, visit booking, what to bring on your first visit.
Millhaven Institution is a maximum-security federal correctional institution operated by Correctional Service Canada in the Ontario Region, Ontario.
Background
Millhaven Institution (French: Ãtablissement de Millhaven) is a maximum security prison located in Bath, Ontario. Approximately 500 inmates are incarcerated at Millhaven. Opened in 1971, Millhaven was originally built to replace Ontario's other aging maximum security prison, Kingston Penitentiary in Kingston Ontario. A riot at Kingston Penitentiary forced Millhaven to open prematurely. During the period of 1977â1984, a Special Handling Unit (SHU) operated at Millhaven, alongside its general maximum-security population.
Source: Wikipedia article lead, CC-BY-SA.
Capacity
—
Current population
—
Occupancy
—
Year opened
1971
Operational
Figures from official sources · verified 2 Jun 2026 · methodology
Facility profile
Operator
Correctional Service CanadaPopulation held
male
Opened
1971
Region
Ontario
Security level
Maximum
Death-row facility
No
Conditions
No conditions summary available yet.
Visiting
No visiting information available.
Mailing
No mailing information available.
Practical info
Contact the operator's website for inmate-specific procedures.
Known issues
No major issues documented in our database.
Notable inmates
- Bruce McArthur1951 · landscape contractor
Between 2010 and 2017, a total of eight men disappeared from the neighbourhood of Church and Wellesley, the LGBTQ village of Toronto, Ontario, Canada.
- Richard Sauvé1952
Richard Michael Anthony Sauvé (born 27 July 1952) is a Canadian former outlaw biker, convicted of first degree murder in the Port Hope 8 case of 1979, turned social activist.
Omar Khadr1986 · jihadistOmar Ahmed Said Khadr (Arabic: ع٠ر Ø£Ø٠د سعÙد خضر, romanized: Ê»Umar Aḥmad Saʻīd Khiá¸r; born September 19, 1986) is a Canadian who, at the age of 15, was detained by the United States at Guantanamo Bay for ten years, during which he pleaded guilty to the murder of U.S.
Source: Wikidata + Wikipedia.
Contact & address
Conditions Risk Score
Derived signal — not a judgement. How it's calculated
Related facilities
Same country, matched on type + security level where possible.
- Donnacona InstitutionDonnaconaMaximumFederal institution
- Kent InstitutionAgassizMaximumFederal institution
- Saskatchewan PenitentiaryPrince AlbertMaximumFederal institution
- Atlantic InstitutionRenousMaximumFederal institution
- Regional Reception CentreMaximumFederal institution
- Edmonton InstitutionEdmontonMaximumFederal institution
Data completeness
62%How many of our profile fields are populated. We surface this so families and researchers know the limits.
Sources
- Correctional Service Canada â institutions
- Wikipedia â Correctional Service Canada
- Correctional Service Canada â Institutional profiles — Government of Canada (CSC)
- Wikipedia — Wikimedia Foundation
- Correctional Service Canada â institutions directory — Correctional Service Canada / Nova Scotia Open Data
- Wikidata (Q6859501)
- Wikipedia
- Wikimedia Commons
- See /data-sources for our overall methodology.
Cite this page
Under CC-BY-4.0. Include the URL and access date; the site is a living reference and entries can change.
World Prisons. (2026). Millhaven Institution. Retrieved October 20, 2026, from https://worldprisons.com/prisons/millhaven-institution
"Millhaven Institution." World Prisons. Accessed October 20, 2026. https://worldprisons.com/prisons/millhaven-institution.
@misc{worldprisons-millhaven-institution,
author = {{World Prisons}},
title = {Millhaven Institution},
year = {2026},
url = {https://worldprisons.com/prisons/millhaven-institution},
urldate = {2026-10-20}
}