I was just wondering if its too late to apply for fall 2017 admission
The deadline was 1st December. It has almost been two months since then. Even the decisions for regular admissions are due to come out on 3rd Feb. So yes, it is too late.
You could contact admissions to ask But I would think it would depend on what you wanted to major in.
Regular Decisions notification is 3 Feb. If you are considering a competitive major, they may tell you no. If your stats are good enough for the Division of General Studies (DGS), you might still be able to apply. But you can only stay 2 years in DGS.
University of Iowa gives a quick turn around for admissions notification. There are other schools that do rolling admissions which you can still apply to.