There are many forms of creationist. On Y!A it usually means a "young - Earth creationist" who tend to believe that the entire Universe is only 6000 to 10,000 years old. Most of these people are very reluctant to say exactly how old.
Most of the "evidence" they give for this is irrelevant, just plain wrong or in too many cases, deliberate lies. They are led by frauds who make a lot of money from this. Sorry, but it's true.
On the other hand it is sensible to say that the Universe was created thousands of millions of years ago, the Earth is about a third of that age and people seem to have been around a bit more than a million years. That is what the real evidence suggests. If you believe that God had a big hand in all of this, well you might be right.
A few hundred years ago Bishop Ussher of the Church of Ireland calculated the dare of creation at 4004 BC. There is a lot wrong with that, but he was working from the only thing he knew. It's an odd fact that the invention of the wheel was probably about 4000 BC and it is also the time that bronze was invented or discovered, maybe a few hundred years later.
In modern Turkey the Catalhoyok site dates back about 9,500 years while Jericho is nearly as old.