ActorBorn Mar 17, 1961 (age 65)Chicago, Illinois, USA

Casey Siemaszko

Peak popularity#19,643 (Dec 15, 2025 – Jan 13, 2026) (Dec 2025)0.6Top 30%

Buzz Score is our daily 0-100+ popularity score based on public activity across the web.

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Casey Siemaszko

Casey Siemaszko is an American actor born on March 17, 1961, in Chicago. He is best known for his supporting roles in popular movies such as Back to the Future and Stand By Me. Siemaszko also starred in the film Three O'Clock High. He grew up on the northwest side of Chicago and attended Saint Ignatius College Preparatory School. Siemaszko graduated from the Goodman School of Drama at DePaul University in 1983. His father, Konstanty, was a Polish Roman Catholic who survived the Sachsenhausen concentration camp and later became a well-known local choreographer in Chicago. Siemaszko's mother, Collette McAllister, was English. He has a sister named Nina who is also an actress and a brother named Corky who is a writer for Daily News and a reporter for NBC News.

Rank#15,378
Buzz Score0.3

Popularity Rankings & History

Daily update · July 2, 2026

Casey Siemaszko ranks #15,378 most popular person with a Buzz Score of 0.3, down 2,396 spots from yesterday. Casey Siemaszko peaked at #19,643 of all time (Dec 15 – Jan 13, 2026). Casey Siemaszko ranks #10,601 over the past 365 days.

Casey Siemaszko Buzz Score History
Daily Buzz Score over the last 30 days
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Updated July 03, 2026
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Casey SiemaszkoPerson
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