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J. K. Simmons

Photo: Jay Dixit, CC BY-SA 4.0, via Wikimedia Commons

Actor

J. K. Simmons

American actor (born 1955)

J. K. Simmons is 71 years old, born on January 9, 1955 in Detroit.

Next birthday in 66 days, turning 72.

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Born
January 9, 1955, Detroit
Age
71
Zodiac sign
Capricorn
Country
United States
Known as
Actor

Official links: Wikipedia

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J.’s birthday, by the numbers

  • J. K. Simmons was born on a Sunday.
  • J. K. Simmons has been alive for about 26,232 days.
  • Their 30,000-day milestone falls on February 27, 2037.
  • Their next birthday, turning 72, is on a Saturday.
  • Next milestone: J. K. Simmons turns 75 on January 9, 2030, in 3 years and 2 months. More milestone birthdays
  • J. K. Simmons is younger than 969 and older than 5,877 of the living celebrities on CFOTD.
  • Half birthday: July 9. Birthstone: Garnet.
  • J. K. Simmons belongs to Baby Boomers.

Age gaps

Born within weeks of J.

Rowan AtkinsonActor · January 6, 1955Kevin CostnerActor · January 18, 1955Annie LennoxSinger · December 25, 1954Chris EvertTennis player · December 21, 1954Eddie Van HalenMusician · January 26, 1955Kelsey GrammerActor · February 21, 1955

Days and weekdays are worked out from the birth date. Compare J.’s age with anyone.

Share J. K. Simmons’s birthday, January 9?Make something for yourself or a birthday friend.
🏅Birthday certificateAdd a name, download a PDF or image🎂Printable birthday pageA free one-page PDF for January 9⭐Birthday twin cardA square card to share

Also born on January 9

All →
Nina DobrevActor · Age 37Joan BaezMusician · Age 85Jimmy PageMusician · Age 82RodrygoSoccer player · Age 25Lara FabianSinger · Age 56Farhan AkhtarFilm director · Age 52

Also born in 1955

All →
Whoopi GoldbergActor · November 13Rowan AtkinsonActor · January 6Kevin CostnerActor · January 18Michel PlatiniSoccer player · June 21Gilbert GottfriedComedian · February 28Isabelle AdjaniActor · June 27

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Birth dates and details from Wikidata (checked October 15, 2026, newest names added October 27, 2026). Ages update every day. Photos are freely licensed and credited on each profile. How we build this site · Report a mistake

Frequently asked questions

How old is J. K. Simmons?

J. K. Simmons is 71 years old, born on January 9, 1955 in Detroit.

What is J. K. Simmons’s zodiac sign?

Capricorn, born January 9.