Can fig trees grow in northern Indiana zone 4?

Yes, we grow fig trees in Huntington, IN. My brother-in-law grows fig trees in Rockford, IL. The trick seems to be wintering the trees. We dig them up half way around the roots and lay them down on the ground. Then we trim all the leaves and remaining figs off the trees. Next, we place an old throwrug over the top of the entire tree. We place bricks around the rug's edges to keep it in place and to protect the tree from winter wind. Lastly, we place mulch rather high over all the rug.

In the spring after the last frost, we bring the trees back to a standing position, fill in any depression made from digging it up in the fall, then give it water, and wait until we can harvest the figs. I hope this helps