My wife and I both were reading by the time we were 5.
It's very fluid though: some people do, some people don't. Strangely, children tend to be very divergent in capability at early ages, then they tend to normalize as they get older. At least, that's what people with lots of experience with kids tell me. :-)
I wrote my first love letter at age 5 and my mother delivered it to the girl's family, who took it and read it to her, because the poor child was only 5 years old and couldn't read herself. LOL!
It's very fluid though: some people do, some people don't. Strangely, children tend to be very divergent in capability at early ages, then they tend to normalize as they get older. At least, that's what people with lots of experience with kids tell me. :-)