Efforts by the Obama administration to clamp down on convicted criminals living illegally in the United States resulted in a higher percentage of them being deported in 2015.
The overall total of 231,000 deportations generally does not include Mexicans.
More than 257,000 immigrants from countries other than Mexico were apprehended at the border during the 2014 budget year.
The National Immigration Institute says about half of the 11,893 underage migrants detained between January and May were travelling alone or with a smuggler.