I can go any couple of days in June, is any day(s) less crowded historically than others and are their any events going on in June that I need to avoid that will increase crowds?

Use the search tool. I'm pretty sure there is a topic about this somewhere...

Tuesday's, Wednesday's, and Thursday's are usually almost empty.

Definitely Tuesdays, Wednesdays, and Thursdays are usually the least crowded. Mondays, aren't too crowded either, I think.

On the calendar on Kings Island's official website, there are no events listed except for Sunday, June 21, whcih is Bring-a-Friend-For-$10-If-You-Have-a-Gold-Pass-Day . That say is also Father's Day. I would avoid that day. Other than that, there are no other events listed. You can use this wesite: http://www.visitkingsisland.com/visit/visit_calendar.cfm to check for events.

Hope this helps!

Saturday will be the worst day of the week to go without a doubt because it will be packed. I'm going next Tuesday for my birthday. I hear that no one is really there on Tuesdays and I'm looking forward to that. I'm hearing other weekdays aren't bad either.

Father's Day isn't usually very crowded...bring a friend for $10 if you have a gold OR PLATINUM pass or not...which is one reason they have that promotion then...

today was dead empty. great day to spend at the park. too bad the storm killed the last half of the trip...

The mere prospect of that storm contributed greatly to the reality that was Kings Island before the storm....

Terpy, just sayin'

Over the summer I usually go on Tuesdays or Wednesdays. Those are not crowded at all.