Any place in the Duluth area that is kosher?

Cub sells Hebrew National hotdogs.  You're welcome.

Wisconsin Point.

Unfortunately, we don't have a large contingent of Jewish people in the area so the desire for a truly Kosher kitchen is rather limited. Same goes for Halal.

You could go to Sammy's and get a Pizza with Kosher Salami on it. But... then it wouldn't be Kosher anymore. 

Considering the lack of said resources, any person who took up the task of starting a Kosher/Halal kitchen would be able to easily corner the market.