MAP’s study of 297,816 homicides reported by medical examiners and coroners from 2000 through 2016 and 272,082 homicides in the FBI’s Supplemental Homicide Report for the same period found a significant age bias. America’s youngest and oldest homicide victims are the least likely of any age cohort to be reported by police to federal authorities.

To see the full 14-page report of this study with state-by-state and county results, click here. To download the data upon which this study is based, click here.
Reporting rates for infanticide vary enormously by state and by county, reflecting the individual policies of local and state authorities. Police in seven states actually reported more infant murders than were documented by medical authorities, although these differences were quite small. States where police outperformed medical authorities were: Alaska, Arizona, California, Maine, Missouri, Nevada and New Jersey.
But police in other states failed to report hundreds of infant killings. Among the states with the largest numbers of unreported infanticides were: Illinois, Florida, Georgia, North Carolina, Ohio, Michigan, Texas, Alabama, Indiana and Pennsylvania.