ICE Detention Lawyer in Colorado

Colorado's ICE detention system has changed more in the past two years than in the previous two decades. As of mid-2026, Colorado has approximately 2,700 immigration detention beds, effectively double the capacity of a year earlier, and the Tenth Circuit has issued one of the most significant recent rulings rejecting the government's expanded mandatory detention theory. When bond has been denied, when detention has stretched past six months, or when a Colorado arrest has resulted in an out-of-state transfer, a federal habeas corpus petition may be the fastest path to meaningful review for someone detained by ICE in Colorado.

Where are ICE detainees held in Colorado?

Enforcement across Colorado is coordinated by the ICE Denver Field Office. Colorado's in-state footprint expanded significantly in July 2026 and now includes two major GEO Group-operated facilities:

• Aurora Contract Detention Facility (also called the Denver Contract Detention Facility) in Aurora. Operated by GEO Group under a contract dating to 1987. In late 2025, ICE increased capacity from 1,360 to 1,530 beds, and oversight visits by U.S. Rep. Jason Crow's staff placed the population near capacity through early 2026. In January 2026, Rep. Crow was denied entry for an unannounced oversight visit permitted by federal law. The University of Denver Court Transparency Project has documented that detainees at Aurora are denied bond in more than 76 percent of hearings.
• Big Horn Detention Facility in Hudson, Colorado, about 30 miles northeast of Denver in Adams County. Opened July 15, 2026 in a repurposed state prison complex that had been vacant since 2014. Also operated by GEO Group, under a five-year contract worth approximately $528.7 million signed July 9, 2026, with a capacity of up to 1,132 detainees.
• ICE Denver Field Office. Coordinates enforcement operations across Colorado and portions of neighboring states, and manages administrative processing before detainees are moved to Aurora, Hudson, or transferred out of state.

Additional Colorado detention sites remain in various stages of planning. ICE has explored facilities in Walsenburg, Ignacio (near the Southern Ute reservation), and Weld County, according to ACLU of Colorado documents. Buckley Space Force Base in Aurora has been used at times for temporary ICE holding.

Common Colorado detention scenarios where habeas may help

Most habeas petitions we file for people detained by ICE in Colorado fall into a few recurring patterns:

• Prolonged detention past six months. In Vizguerra-Ramirez v. Choate, a District of Colorado judge in December 2025 ordered a bond hearing after nine months of detention at Aurora, finding the detention exceeded the "presumptively reasonable six-month detention period" and that "conditions of the Aurora Contract Detention Facility resemble criminal incarceration."
• Denied bond hearings under mandatory detention. ICE has classified the person as subject to mandatory detention under INA § 236(c) or under the July 2025 government guidance denying bond to noncitizens who entered without inspection. In Santillan-Quiroz v. ICE, decided June 30, 2026, the Tenth Circuit rejected that guidance and ordered a bond hearing for a longtime U.S. resident detained after a traffic stop. That ruling now controls habeas petitions from detainees held in Colorado. See our overview of mandatory detention challenges.
• Post-final-order detention. A removal order has been entered, ICE cannot carry it out, and detention continues without a lawful basis under Zadvydas v. Davis.
• Rapid transfer out of state. Colorado detainees have been moved to facilities in other Tenth Circuit states, or in some cases to Louisiana or Texas. Once transferred, habeas jurisdiction generally follows the new location, and detainees can lose the benefit of District of Colorado precedent and the Tenth Circuit's Santillan-Quiroz ruling. Filing quickly can preserve that precedent.
• Detention following ICE check-in or traffic stop. ICE has arrested Colorado residents at scheduled check-ins, after routine traffic stops, and in workplace enforcement operations. In these cases habeas can be paired with a challenge to the underlying detention theory.

Each is a distinct fact pattern where a federal habeas petition under 28 U.S.C. § 2241 may reset the review process. Which one fits depends on the specific timeline and record.

How the Tenth Circuit shapes Colorado habeas cases

Colorado sits within the Tenth Circuit Court of Appeals, based in Denver. In Santillan-Quiroz v. ICE (June 30, 2026), the Tenth Circuit rejected the Trump administration's July 2025 guidance directing ICE to detain noncitizens who entered without inspection without a bond hearing. The court held that no "class-wide findings exist here that would justify mandatory detention of every single admitted noncitizen" and ordered an individualized bond hearing. The decision applies across the Tenth Circuit, which covers Colorado, Oklahoma, Kansas, New Mexico, Utah, and Wyoming.

The Tenth Circuit's decision joins rulings from the First, Second, Third, and Sixth Circuits rejecting the government's mandatory detention theory. The Fifth Circuit (Buenrostro-Mendez v. Bondi) and Eighth Circuit have upheld the government's position, and the government has petitioned the Supreme Court for review. Colorado detainees are now in one of the strongest circuits for habeas relief on this question.

Preserving Tenth Circuit jurisdiction by filing before a transfer can meaningfully change the outcome. See our overview of prolonged detention challenges for how these arguments are typically framed.

Bond hearing vs. habeas petition in Colorado

An immigration court bond hearing and a federal habeas petition are two different tools. Bond hearings happen inside the immigration system before an immigration judge and address only whether the person can be released. Habeas petitions are filed in federal district court under 28 U.S.C. § 2241 and ask an Article III judge to review whether the immigration detention itself is constitutional and statutorily authorized.

The two tracks often work in sequence. When ICE argues that a person is subject to mandatory detention with no right to a bond hearing, habeas is frequently the only remaining avenue. Given that Aurora has denied bond in over 76 percent of hearings, habeas is often the more practical route for Colorado detainees. Our guide comparing habeas corpus and immigration bond hearings walks through when each tool tends to fit for someone detained by ICE in Colorado.

What families should do first

The first hours after a Colorado ICE arrest are especially important because detainees are often moved between Aurora, Hudson, and out-of-state facilities. Concrete steps:

• Locate the person immediately. The ICE Online Detainee Locator is the fastest starting point. Colorado arrestees typically appear at Aurora Contract Detention Facility, though the new Big Horn Detention Facility in Hudson began accepting detainees in July 2026.
• Preserve every ICE document. Notice to Appear, ICE detainer, ERO letters, and any paperwork received at check-in appointments all matter.
• Pull together identity, immigration, and community-ties records. Passport, birth certificate, A-number, prior immigration filings, tax returns, lease or mortgage, U.S. citizen family relationships, employment records, and medical documentation for the detainee or dependents.
• Do not sign anything without legal review. ICE officers sometimes present documents at intake that waive rights or agree to removal. Ask for a written copy and consult counsel before signing.
• Act before an out-of-state transfer. In many Colorado cases, the strongest legal options are available while the person is still at Aurora or Hudson and before ICE moves them out of the Tenth Circuit. Filing in the District of Colorado before a transfer preserves the Santillan-Quiroz ruling and other Tenth Circuit precedent.

If your loved one is detained by ICE in Colorado, a federal habeas corpus petition may be the most effective legal tool available. Unlike immigration court proceedings, habeas petitions are filed in U.S. District Court before an independent federal judge — not a government employee.

We handle complex cases, including:

Which federal court handles Colorado habeas cases?

Colorado has a single federal judicial district: the U.S. District Court for the District of Colorado, based in Denver with additional courthouses in Grand Junction, Colorado Springs, and Durango. All habeas petitions for people detained by ICE at Aurora Contract Detention Facility or Big Horn Detention Facility in Hudson are filed there.

The District of Colorado falls under the Tenth Circuit Court of Appeals, based in Denver, which also covers Oklahoma, Kansas, New Mexico, Utah, and Wyoming. In Santillan-Quiroz v. ICE (June 30, 2026), the Tenth Circuit rejected the Trump administration's July 2025 mandatory detention guidance, holding that immigration detention requires individualized findings and ordering a bond hearing for a longtime U.S. resident held for eight months. The Tenth Circuit is now one of the more detainee-favorable circuits on this specific question, alongside the First, Second, Third, and Sixth Circuits, in contrast to the Fifth and Eighth Circuits.

Because Colorado detainees are sometimes transferred out of state, some habeas petitions end up filed in other Tenth Circuit districts or in the Fifth Circuit (Louisiana, Texas). Filing procedures are published on the ICE Detention Facility Locator and the district's court website.