Halloween is upon us, and the safety of our children is always a top priority. So, when you head out to trick or treat this weekend, keep a close eye on where you should and shouldn't knock on doors.

While in a perfect world we wouldn't have to worry about situations like these, but the reality is that sex offenders live among us. And while they have served their time, it's still something that parents need to be aware of.

More than 600 registered sex offenders live in Tyler and Longview, which means there are many houses and neighborhoods that should be avoided this Halloween.

Click the maps below to search through sex offenders in Tyler and Longview.