St. Clair County Jail
ICE detention facility in Port Huron, MI. How to find a person, where to write, and what to do next.
Address1170 Michigan Road, Port Huron, MI 48060
CountySt. Clair
StateMI
Appellate circuitSixth
ICE officeDetroit
How long people are usually held at this facility
Median 27 days; for half of people, 16 to 52. Based on 1,020 completed cases in 2024–2026.
This is a fact from past data, not a prediction for a specific person. Source: Deportation Data Project.
Someone may be held here — what to do
Find a person in the ICE locator →The first call: what to ask, what not to say →Visiting: the rules and what to bring →Calls, messages, and money on the account →Letters and postcards
- A plain postcard by regular mail arrives more reliably than any service
- Books: new only, shipped directly by the seller
- Softcover: hardcovers take longer to screen and are often refused
- The A-Number is required on the envelope
Address and assignment come from ICE data compiled by the Deportation Data Project (June 2026). Phones and hours are not published here — confirm them on the official ICE page or by calling the facility.
Information updated July 28, 2026. Rules change — check the date.
We are not attorneys and we do not give legal advice. This page has facts and links to official sources only.