This post dives into the Marin Rapid Response Network’s latest report on immigration enforcement in Marin County. It looks at rising detentions of undocumented residents, where people end up after arrest, and how local volunteers and communities—from San Rafael and Novato to Sausalito and Mill Valley—try to respond and support families.
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Tracking ICE Detentions in Marin County
The Marin Rapid Response Network has noticed more arrests linked to U.S. Immigration and Customs Enforcement activity. Several detentions have happened right after releases from the Marin County Jail.
Most arrests take place when people head to San Francisco for ICE check-ins or court appearances. Still, there are exceptions—like a woman who went to a Santa Rosa USCIS office for fingerprints tied to a work-permit application.
This shifting landscape is affecting Marin County towns such as San Anselmo, Tiburon, and Corte Madera. Immigrant communities in these places are feeling the impact.
Lisa Bennett, who leads network operations and directs the Multicultural Center of Marin, shared that ICE has detained 29 undocumented Marin residents since January 2025. Sheriff Jamie Scardina said ICE agents showed up in the jail lobby when two inmates were released on April 13, but he couldn’t confirm reports about arrests outside the jail.
He also mentioned that he only responds to some ICE requests for release-date info. In a county like Marin, where neighborhoods in San Rafael, Novato, and Larkspur worry about safety and family stability, these details really hit home.
Recent Detentions and Patterns
- ICE picked up two people after their release from the Marin County Jail in March. In April, two more faced detention.
- Since January 2025, ICE has detained 29 undocumented Marin residents.
- Most arrests happened when people traveled to San Francisco for ICE check-ins or immigration court. One case involved a fingerprint appointment at a Santa Rosa USCIS office.
- Families across Marin—from San Rafael to Sausalito, and Mill Valley to Fairfax—have felt the disruption. Parents and children in Marin City and Greenbrae, especially, have faced unexpected upheaval.
- In April, detainees reportedly went to the Golden State Annex in McFarland (run by GEO Group) or to California City (operated by CoreCivic). Local officials say these transfers are part of a bigger logistical web that stretches well beyond the county.
Detention Destinations and Sheriff’s Office Details
- The Golden State Annex in McFarland often houses detainees from the Bay Area, including people from Sausalito and Corte Madera. GEO Group operates the facility.
- California City, run by CoreCivic, also takes in some Marin detainees. These cases show how local arrests tie into the broader statewide detention network.
- Sheriff Scardina said his office sometimes provides release-date information to ICE, but state law mostly blocks sheriffs from notifying ICE unless a serious or violent felony is involved. Last year, his department responded to 23 out of 141 ICE requests.
Marin Rapid Response Network: How It Works
- The network keeps a hotline open for local ICE sightings. People call in especially during rumors or when crackdowns seem likely, trying to stay ahead and keep each other informed.
- Since expanding in 2018, the program has grown to about 1,000 volunteer witnesses, 21 dispatchers, and two part-time staff. That’s a lot of neighbors involved, from San Rafael to San Anselmo.
- Funding comes from the San Francisco Foundation, Marin Community Foundation, and Marin County. Still, Bennett admits resources don’t really cover the growing needs for case management, accompaniment, or direct support for families in places like Ross, Greenbrae, and Marin City.
- Volunteer training takes about three hours. Legal observers wear pink aprons, while other community members hand out whistles and instructions to alert undocumented residents when ICE agents show up in towns like Mill Valley or Tiburon.
What This Means for Marin Communities
All over Marin—from the fishing docks in Sausalito to the leafy streets of San Rafael and those winding lanes up in Fairfax—families are dealing with the emotional and logistical mess that comes with arrests happening far from home.
The network’s advocates keep saying families in Novato and Larkspur need more support. They talk about case management, someone to go with people to hearings, and help after detention. It’s a lot to handle, honestly.
Communities in Tamalpais Valley, Greenbrae, and other pockets of Marin are stepping up as ICE activity continues. Neighbors are rallying around each other, even if nobody really knows what’s coming next.
Local nonprofits, faith groups, and county officials are working together. The goal? Build some resilience and make sure folks in places like Corte Madera or Mill Valley know where they can find real information and some kind of protection.
Marin’s got a reputation for civic-mindedness, but there’s this constant tension. Public safety, immigration policy, the everyday scramble for undocumented families—none of it’s simple.
If you want more info or maybe to volunteer, you can reach out to the Marin Rapid Response Network. Their hotline and local groups in San Rafael, Novato, and Sausalito are a good place to start.
Here is the source article for this story: Marin monitors report increase in ICE arrests
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