ICE operated a greater number of detention facilities at that time, too. In September 2019, detained individuals were spread across a total of 213 facilities. Today, ICE reports 155 detention centers – far lower than in 2019. While detention facilities have proliferated across the United States during the second Trump administration, growing from 107 in late January to 155 in the most recent update, the total number of facilities remains far lower than the 213 used by ICE in September 2019.

In addition, current detainees tend to be more highly concentrated in a few facilities, unlike in 2019. In September 2019, a total of 213 facilities reported ICE detainees, but none reported an average daily population (ADP) of more than 2,000 at a single location and 10 facilities reported an ADP of over 1,000 detainees. Currently, of the 155 facilities reporting detention numbers, one facility (Natchez, Mississippi) consistently reports more than 2,000 detainees, and 13 facilities report an ADP of over 1,000 people.

Highlights from data updated in TRAC's Detention Quick Facts tool show that:

• Immigration and Customs Enforcement held 51,302 in ICE detention according to data current as of June 1, 2025.
• 22,438 out of 51,302—or 43.7%—held in ICE detention have no criminal record, according to data current as of June 1, 2025. Many more have only minor offenses, including traffic violations.
• ICE relied on detention facilities in Texas to house the most people during FY 2025, according to data current as of May 27, 2025.
• ICE arrested 23,564 and CBP arrested 5,233 of the 28,797 people booked into detention by ICE during May 2025.
• Adams County Det Center in Natchez, Mississippi held the largest number of ICE detainees so far in FY 2025, averaging 2,168 per day (as of May 2025).
• ICE Alternatives to Detention (ATD) programs are currently monitoring 185,824 families and single individuals, according to data current as of May 31, 2025.
• San Francisco's area office has highest number in ICE's Alternatives to Detention (ATD) monitoring programs, according to data current as of May 31, 2025.

TRAC’s Immigration Quick Facts provides the latest data on immigrant detention, immigration court cases, and immigration prosecutions in federal court. Each page includes several key data points alongside a graphic or table, a short description for context, and a link to more data. Click here to see more about TRAC's entire suite of immigration tools.