The 20 best cities for trick-or-treaters

20. Phoenix, AZ (Photo by Melanie Stetson Freeman/The Christian Science Monitor via Getty Images)

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Oct. 26, 2010 2:04 AM PT

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

19. San Antonio, TX (Photo by George Rose/Getty Images)

17. Cleveland, OH

17. Cleveland, OH (Photo by George Rose/Getty Images)

16. Philadelphia, PA

16. Philadelphia, PA (Photo by Jerry Driendl/Getty Images)

15. Atlanta, GA

15. Atlanta, GA (Photo by Barry Williams/Getty Images)

13. San Diego, CA

13. San Diego, CA (Photo by Donald Miralle/Getty Images)

12. Milwaukee, WI

12. Milwaukee, WI (Photo by Darren Hauck/Getty Images)

11. Albuquerque, NM

11. Albuquerque, NM (Photo by David Lienemann/Getty Images)

10. Washington, DC

10. Washington, DC (TIM SLOAN/AFP/Getty Images)

9. Las Vegas, NV

9. Las Vegas, NV (Photo by Ethan Miller/Getty Images)

7. Chicago, IL

7. Chicago, IL (Photo by George Rose/Getty Images)

6. Sacramento, CA

6. Sacramento, CA (Photo by David Paul Morris/Getty Images)

5. Denver, CO

5. Denver, CO (Photo by George Rose/Getty Images)

4. San Jose, CA

4. San Jose, CA (Photo by Justin Sullivan/Getty Images)

2. San Francisco, CA

2. San Francisco, CA (Photo by George Rose/Getty Images)

1. Seattle, WA

1. Seattle, WA (Photo by George Rose/Getty Images)