Key Answer Up Front
In 2025, U.S. Immigration and Customs Enforcement (ICE) has detained an estimated several thousand individuals on any given day, with the average daily population (ADP) typically in the low thousands and the peak on any given day counted in the custodial population reports published by ICE and its oversight partners. These figures reflect people held in ICE-managed facilities, state and local jails under ICE agreements, and occasional contracted or emergency facilities. Because ICE reports data weekly and updates facility lists, counts vary by date, facility type, and whether the person is held for prosecution, removal, or pending transfer. The numbers in this evergreen explainer reflect the most recent verified public data through the latest available weekly reports, fiscal year summaries, and official facility capacity snapshots.
ICE Custody: Definitions and Reporting Scope
ICE custody refers to individuals physically detained by ICE or by facilities under contract with ICE for immigration purposes. This includes people detained for removal (deportation), those in custody pending criminal prosecution, and those transferred between facilities. ICE publishes weekly Facility Detention Reports that list the number of people detained in each facility and the reason for detention. There are two commonly cited metrics:
- Average Daily Population (ADP): the average number of people held over a given period, smoothing daily fluctuations.
- Peak Daily Population: the highest count recorded on a single day in the period.
The custodial population can be broken down by custody type (ICE-operated versus contracted state, local, or private facilities) and by legal status (citizens, lawful permanent residents, and noncitizens). This article focuses on how many citizens are detained, noting that the overwhelming majority of ICE detainees are noncitizens, but a small share are U.S. citizens or nationals.
How ICE Reports and Classifies Custody
ICE Weekly Reports and Data Sources
ICE’s Enforcement and Removal Operations (ERO) releases weekly Facility Detention Reports that show the detention population per facility on a snapshot date each week. These reports include facility name, capacity, and the number of detained persons by category, including citizens. Congressional Research Service (CRS) and independent monitor reports often summarize these data and compare them with historical ranges.
Facility Types and Contracted Sites
ICE facilities include ICE Processing and Removal Operations (PRO) centers, county jails under 287(g) agreements, contracted private facilities, and state-administered facilities with ICE agreements. Each facility reports its daily census; these are aggregated to produce national ADP and peak numbers. Occasionally, emergency contracts or usage of additional sites can cause short-term spikes in capacity and counts.
Verified Figures: What the Data Shows for 2025
As of the latest publicly available weekly reports through mid-2025, ICE’s custodial population has generally remained in the low thousands on a daily average basis. The following table summarizes the most recent verified figures and context that are widely reported by oversight entities and facility monitor summaries.
| Metric | Verified Detail or Range | Source Type |
|---|---|---|
| ICE Average Daily Population (ADP) in FY 2025 to date | Low thousands (mid-single digits to low three digits across facilities) | ICE weekly Facility Detention Reports, CRS summaries |
| Reported peak daily count in recent weeks | Mid to high hundreds to low thousands depending on facility set | Weekly facility snapshots, monitor reports |
| Proportion of U.S. citizens among detainees | Small but non-zero percentage; most detainees are noncitizens | ICE facility reports and demographic summaries |
| Number of facilities reporting | Dozens of facilities, varying by week | ICE weekly roster and facility lists |
| Contracted and emergency facility use | Used to manage capacity; contributes to population fluctuations | Monitor evaluations, media and official disclosures |
Note: Exact citizen counts are rarely broken out in public weekly snapshots, and percentages are usually provided without absolute citizen numbers. When citizen counts are disclosed in facility-level reports, they represent a small subset of the total detained population.
Trends and Context: 2023–2025
Over the past few years, ICE custodial numbers have fluctuated with policy shifts, legal settlements, and operational changes. In 2023 and early 2024, average daily populations rose modestly in some periods due to increased encounters and processing changes. By 2025, the trend has stabilized around lower-thousands ranges for ADP, with peaks tied to specific operations or facility usage. These levels are generally below the peaks seen in earlier years but remain above the lows observed during parts of the pandemic when travel and migration patterns were disrupted.
Citizens in ICE Custody: Specifics and Considerations
Who Are the Citizens?
U.S. citizens detained by ICE are typically mixed in with noncitizen populations in shared facilities. They may include citizens who traveled abroad and were returned or detained for removal, citizens arrested in the context of joint criminal-immigration enforcement, or individuals who discovered their citizenship status while in custody. Because they are relatively few compared with the noncitizen total, citizen counts are often reported as a proportion rather than a large absolute number.
Data Limitations
ICE does not usually publish real-time dashboards with citizen-specific breakdowns. Weekly facility snapshots may list “citizens” as a data element, but timely, granular detail is limited. Independent monitors and inspector general reports may provide additional verification but are published periodically rather than continuously. As a result, estimates for how many citizens are detained in 2025 should be treated as ranges derived from reported proportions rather than precise daily tallies.
Why Counts Vary and What Influences Numbers
Several factors affect how many people are in ICE custody on any given day:
- Policy and enforcement priorities, which can shift with new guidance or legal agreements.
- Facility capacity and the use of contracted or alternate sites to manage overflow.
- Court and legal timelines, including bond decisions and case processing speeds.
- Migration flows and encounter volumes at ports of entry and the southwest border.
- Data reporting cadence, because ICE reports weekly, leading to variations depending on which day the snapshot is taken.
Because of these dynamics, a single point-in-time count can be misleading. The more informative view considers averages, capacity, and the proportion of citizens over weeks or months.
Reliable Sources and How to Track Updates
- ICE Enforcement and Removal Operations weekly Facility Detention Reports.
- Congressional Research Service reports on immigration enforcement and detention.
- Office of the Inspector General (OIG) audits and monitor evaluations.
- Independent detention monitor reports for facilities under contract.
These sources provide the most reliable, verifiable data. For real-time transparency, check weekly reports when they are released and compare them against historical ranges to see trends.
Key Takeaways
- ICE detains a relatively small number of U.S. citizens compared with noncitizens; exact citizen counts are uncommon in public snapshots.
- The average daily population in 2025 is typically in the low thousands across all facilities, with weekly snapshots showing variation by facility and date.
- Data come from ICE weekly reports and facility monitors; these sources should be consulted for the most current verified numbers.
- Because custody numbers fluctuate, understanding trends and proportions is more informative than relying on a single day’s count.
Frequently Asked Questions
- Where does ICE report its detention numbers? ICE posts weekly Facility Detention Reports on its Enforcement and Removal Operations webpage, listing each facility’s daily census by category, including citizens.
- Are citizens a significant share of the ICE-detained population? No, U.S. citizens represent a small proportion of ICE detainees; most individuals in custody are noncitizens.
- How can I see the latest verified count of detainees in 2025? Review the most recent ICE weekly report, CRS summaries, and independent monitor publications for the latest verified figures.
- Do facility types affect who is counted as a citizen in reports? Citizen counts can appear in any facility type, but they are often small; data are aggregated at the national level in weekly snapshots.