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Denver Field Office — ICE ERO Area of Responsibility

All 3 ICE detention facilities under the Denver Field Office Enforcement and Removal Operations jurisdiction, covering 2 U.S. states.

The Denver Field Office is one of 24 ICE Enforcement and Removal Operations (ERO) field offices that supervise detention and removal operations across the United States. This office oversees 3 detention facilities physically located in: CO, WY.

Each ICE ERO field office has a defined Area of Responsibility (AOR), generally aligned with U.S. state boundaries. The AOR determines which office supervises a particular non-citizen’s ICE check-ins, oversees their deportation case, and (when applicable) places them into civil detention. A non-citizen physically arrested in one AOR may be transferred to a detention facility in another AOR; ICE policy requires notice of transfer but does not require advance notice to family or attorneys.

Facilities under the Denver Field Office

Facility	City	State	Facility phone
Denver Contract Detention Facility (Aurora)	Aurora	CO	(303) 361-6612
Natrona County Detention Center	Casper	WY	(307) 235-9521
Sweetwater County Detention Center	Rock Springs	WY	—

How transfers between field offices work

ICE may transfer a detainee from a facility in one ERO field office’s AOR to a facility in another AOR for operational reasons (bed-space availability, medical needs, removal-flight staging). The ICE Performance-Based National Detention Standards (PBNDS) require ICE to notify the detainee’s attorney of record within 24 hours of an inter-facility transfer, and to update the Online Detainee Locator System (ODLS) within 8 hours of physical arrival at the new facility. Family members are not directly notified — they must check ODLS at locator.ice.gov.

Where cases from this office are heard

Immigration cases supervised by the Denver Field Office are heard at EOIR immigration courts in Colorado, Wyoming. The courts physically located in these states:

Immigration court	State
Aurora Immigration Court	Colorado
Denver Immigration Court	Colorado

Detained dockets move fast — hearings can be scheduled within weeks. Find judge-level hearing links on the immigration court pages.

Free BIA-recognized legal help in this area

The Department of Justice recognizes nonprofit organizations whose accredited representatives can lawfully represent people in immigration proceedings — usually free or low-cost:

Colorado: 25 active recognized organizations — most offices in Alamosa, Steamboat Springs
Wyoming: 3 active recognized organizations — most offices in Big Piney

Sources: EOIR immigration court directory and the DOJ Recognition & Accreditation roster (April 2026 report). Court assignments and rosters change — verify before relying on them.

All 24 ERO field offices: /ice-detention/by-ero-field-office/
ICE Online Detainee Locator (official): locator.ice.gov
Know Your Rights — ICE encounters: /know-your-rights/
BIA-recognized legal aid (by state): /legal-aid/bia-recognized/

Information current as of 2026-05-27 based on the official ICE.gov detention facility directory and ERO field office listings. Facility designations and field office areas of responsibility may change. This page is general information, not legal advice.

Frequently asked questions

What is the Denver Field Office?

The Denver Field Office is one of 24 ICE Enforcement and Removal Operations (ERO) field offices in the United States. Each ERO field office supervises detention, deportation, and supervision activities within a defined Area of Responsibility (AOR) covering one or more states. This office oversees 3 detention facilities.

What states does the Denver Field Office cover?

The detention facilities under this office are physically located in: CO, WY. The ERO field offices broader AOR may extend to additional states for non-detention functions like ICE check-in supervision.

How do I contact the Denver Field Office directly?

Use the contact phone listed on individual facility pages, or call the ICE ERO national toll-free number 1-888-351-4024 for general inquiries. Detention-specific questions should go to the facility where the detainee is held.

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General information, not legal advice. MigrantUSA is an independent publisher and is not a law firm; using this site does not create an attorney-client relationship, and this content is not a substitute for advice from a licensed attorney about your specific situation. US federal, state, and local government procedures, fees, and forms change. Always verify current details directly with the relevant agency before acting. For immigration, tax, or other legal matters specific to your situation, consult a licensed attorney or BIA-accredited representative.