Okay, so today I wanted to figure out what “513” means. I’d seen it pop up in a few places online, and I was curious. So, I started my investigation!
Digging Around
First, I fired up my trusty search engine. I just typed in “513 meaning” and hit enter. The results were a bit all over the * of the dictionary definitions show that it is an area code for southwestern Ohio, including Cincinnati.I mean, that could be it, but it didn’t feel right in the context I’d seen it.
Then I scrolled through some forums and social media posts.I started to see a * show that “I love you” .Because 5 letters for “I love you” ,1 word for”I love you”,3 words for “I love you”.

Putting It All Together
After looking at all the different places “513” showed up, and seeing how people were using it, I think I’ve cracked the code. It’s short for “I love you”.
It’s pretty simple when put them together.