In 2017, the FBI reports there were a total of 1,632,921 arrests for all drug offenses, of which 238,406 were for sale or manufacture of any drug, and 1,394,515 were for possession of any drug.

• Of the 238,406 sale/manufacture arrests in 2017, 84,912 were for heroin, cocaine, and derivatives; 60,418 were for marijuana; 26,127 were for synthetic or manufactured drugs; and 65,317 were for other dangerous nonnarcotic drugs.

Effect Of Medical Marijuana Legalization On Crime Rates And Limitations Of Data: "Given that the current results failed to uncover a crime exacerbating effect attributable to MML, it is important to examine the findings with a critical eye. While we report no positive association between MML and any crime type, this does not prove MML has no effect on crime (or even that it reduces crime). It may be the case that an omitted variable, or set of variables, has confounded the associations and masked the true positive effect of MML on crime.

According to the FBI's Uniform Crime Report, in 2017, of the 1,247,321 violent crimes reported to police, 45.6 percent were cleared by arrest or exceptional means. Of the 7,694,086 property crime offenses reported to police in 2017, only 17.6 percent were cleared by arrest or exceptional means.

Drug Arrests in the US, 2010, by Age and Gender: "State and local law enforcement agencies made an estimated 1,336,500 arrests for drug possession or use in 2010. Females were 20% of these arrests. The median age in drug possession or use arrests was 26. Eleven percent of drug possession or use arrests in 2010 involved a juvenile, 18% involved persons age 40 or older, and 6% involved persons age 50 or older."

Drug Arrest Trends in the US 1990-2010: "There were 80% more arrests for drug possession or use in 2010 (1,336,530) than in 1990 (741,600). Between 1990 and its peak in 2006, the arrest rate for drug possession or use increased 75% (figure 37). The arrest rate declined between 2006 and 2010, ending in 2010 at 46% above its 1990 level and at a level similar to those seen between 1997 and 2002."

"In the UCR Program, a law enforcement agency reports that an offense is cleared by arrest, or solved for crime reporting purposes, when three specific conditions have been met. The three conditions are that at least one person has been:

"• Arrested.
"• Charged with the commission of the offense.
"• Turned over to the court for prosecution (whether following arrest, courtsummons, or police notice).

"• In the nation in 2016, 45.6 percent of violent crimes and 18.3 percent of property crimes were cleared by arrest or exceptional means.
"• When considering clearances of violent crimes, 59.4 percent of murder offenses, 53.3 percent of aggravated assault offenses, 40.9 percent of rape offenses (legacy definition), 36.5 percent of rape offenses (revised definition), and 29.6 percent of robbery offenses were cleared. (Please note, the legacy and revised UCR definitions for rape can be accessed in Offense Definitions.)

"In 2015, 73.1 percent of all arrestees were males. Males accounted for 79.7 percent of persons arrested for violent crimes and for 61.7 percent of persons arrested for property crimes.
• Males comprised 88.5 percent of persons arrested for murder and nonnegligent manslaughter in 2015.
• Of the total number of persons arrested for drug abuse violations, 77.4 percent were males.
• Females accounted for 43.2 percent of all persons arrested for larceny-theft offenses in 2015.
• Of persons arrested for aggravated assault in 2015, 23.1 percent were females.

Of the 1,632,921 drug law violations in the US in 2017, 85.4% (1,394,515) were for possession of a controlled substance. Only 14.6% (238,404) were for sale or manufacture of a drug.

In 2017, law enforcement agencies in the US made 10,554,985 arrests for all offenses, of which 1,632,921 were drug arrests, 518,617 were for violent offenses, and 1,249,757 were for property offenses.