How safe do you feel when you walk around in your neighborhood?

How safe do you feel in your neighborhood after dark? Until when would you allow a 12-year-old for example to stay outside the house?
I heard about people that don't let their kids play even in their front yard and it's not even dark outside. Do you feel safe walking alone in your neighborhood at night? Would you feel safe walking around your neighborhood at night?
Just had this thought. I'm in W. Colfax and it's a strong no, unfortunately. Got me thinking, is it a "yes" for anyone in Denver these days? How often do you feel scared and what neighborhood do you live in?