Tucson Police Department dispatchers record each immigration check an officer makes over the radio. Officers are instructed to verify immigration status anytime they suspect someone they've stopped for another reason to be in the country illegally as well as anytime they arrest someone. This data includes checks done in July and August 2013. The department provided 2,030 forms, but the addresses were blank, illegible or could not be found on a map in 64 cases. A red dot reflects that the driver was cited for a license or registration offense. Blue dots include all other offense categories. Data from the South Tucson Police Department was not available.

Download the data to this map here.