National clearance data

Table 25—“Percent of Offenses Cleared by Arrest or Exceptional Means, by Population Group, 2011”
Table 26—“Percent of Offenses Cleared by Arrest or Exceptional Means, by Region and Geographic Division, 2011”
Clearance Figure—“Crimes Cleared by Arrest or Exceptional Means, 2011”

Other National data:
National offense data
National arrest data
National police employee data