Please see the Oregon Curfew Laws July 1, 2009, update.
I bet you thought curfews were from the old days (or war-torn countries). Or of the classic corfu/curfew mixup sort (“Curfew will not ring tonight!”) from here).
But these are real curfews – for real children (and parents)!
Here (scroll down to 3rd article) is a chart showing juvenile curfews in Washington County (Oregon). (From the Washington County Neighborhood Watch News, Vol_22 Issue_7-July, 2008.)
See these for more about juveniles (by county), the juvenile court system (and here and here), and leaving kids home alone, but also these and these and these and these.