For 'SpongeBob SquarePants' fans, Patrick's age is a bit of an intriguing mystery, as the exact age isn't ever mentioned in the series. However, he appears to be the same age as SpongeBob who supposedly is officially over 30.
In the official canon of SpongeBob SquarePants, Patrick's exact age has never been explicitly revealed. The animation focuses more on his personality traits (innocence, slowness, kindness) and his interactions with SpongeBob, rather than a specific age.
However, judging by his characterization, Patrick is portrayed as an "adult starfish"—he has his own home (under a rock) and can participate in various social activities (such as working and competing), but his behavior and thinking are distinctly childish, and this contrast is part of the character's humor.
In short, Patrick's "age" is more of a vague setting, focusing on his role as SpongeBob's best friend rather than a specific number.