These are the 20 best cities for trick-or-treating according to Zillow.com. Data compiled for the survey includes density of a neighborhood, walkability and safety.
19. San Antonio, TX (Photo by George Rose/Getty Images)
17. Cleveland, OH (Photo by George Rose/Getty Images)
16. Philadelphia, PA (Photo by Jerry Driendl/Getty Images)
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15. Atlanta, GA (Photo by Barry Williams/Getty Images)
13. San Diego, CA (Photo by Donald Miralle/Getty Images)
12. Milwaukee, WI (Photo by Darren Hauck/Getty Images)
11. Albuquerque, NM (Photo by David Lienemann/Getty Images)
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10. Washington, DC (TIM SLOAN/AFP/Getty Images)
9. Las Vegas, NV (Photo by Ethan Miller/Getty Images)
7. Chicago, IL (Photo by George Rose/Getty Images)
6. Sacramento, CA (Photo by David Paul Morris/Getty Images)
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5. Denver, CO (Photo by George Rose/Getty Images)
4. San Jose, CA (Photo by Justin Sullivan/Getty Images)
2. San Francisco, CA (Photo by George Rose/Getty Images)
1. Seattle, WA (Photo by George Rose/Getty Images)