How old is Patrick Star and Spongebob in Spongebob Squarepants.

He is a 34 year old who acts like he is 3. Although SpongeBob's driver's license says his birthdate is July 14, 1986, Hillenburg joked that he is fifty in "sponge years". He explained that SpongeBob actually has no specific age, but that he is old enough to be on his own and still be going to boating school.

The answwer to your question is patrick is 3 years old