# Notes

#### August 4, 2025 

Typically, disaggregated average daily population numbers released by ICE include decimals, allowing each of the three separate reporting categories -- Security Classification, Gender/Criminal Status, and ICE Threat Level -- to sum to equal population values.
In this release, ICE rounded all population numbers to the nearest integer.

This has meant that one category might show a higher population than another category by one or two people, despite the fact that both systems of classification report on the same number of individuals detained.
To put it differently, ICE released up to three different average daily population figures per facility.

For the purposes of calculating Interval ADP, that difference of 1 or 2 can create discrepancies of 14 or even 28 people when calculating the population for each facility between July 22 and August 4.

To mitigate the impact of this reporting style, we have decided to take the average of the three categories and treat that number as the official Average Daily Population as reported by ICE.
We then computed the Interval ADP for July 22 to August 4 based on that equally-weighted number.

 The rounding discrepancy causes nonsensical numbers for the disaggregation categories: security classification, gender, and criminal status. 
 This was particularly true for facilities which hold fewer people in total.
 We will not report any subpopulation Interval ADP for detention facilities which held an average of 14 or fewer individuals over the last interval (the 14 days between July 2 and August 4). 
 
One facility listed by ICE on this date featured population averages that were impossibly low:

-   Robert A. Deyton Detention Facility

Population numbers reported by ICE for this facility have been excluded from the dataset for this date.

#### July 21, 2025

One facility listed by ICE on this date featured population averages that were impossibly low:

-   Northwest Regional Corrections Center

Population numbers reported by ICE for this facility have been excluded from the dataset for this date.

As originally published, Miami Federal Detention featured inaccurate Interval ADP numbers. This was corrected on August 7, 2025. 

#### July 7, 2025

More than half (96 out of 172) of the facilities listed by ICE on this date featured population averages that were impossibly low. While it's quite possible that ICE released correct populations for other facilities, the pervasiveness of the error has forced us to drop this entire dataset from release.

#### June 23, 2025

Four facilities listed by ICE on this date featured population averages that were impossibly high:

-   Fayette County Detention Center
-   La Paz County Adult Detention Facility
-   Lexington County Jail
-   New Hanover County Jail

Population numbers reported by ICE for these four facilities have been excluded from the dataset for this date.

A fifth detention facility had two entries for this release with differing population values:

-   Nassau County Correctional Center

Upon the passage of time and the inclusion of more data, we have selected the entry with the lower ADP value for this week as it comports more consistently with population releases before and after June 23.