geographic mystery

I'm taking a road trip soon.  My brother and I are driving from Fort Wayne to Gulfport to visit his grandson (my great-nephew).  I'm looking forward to the visit but I am a little confused about where we are going.  My brother tells me we are going to Gulfport, Louisiana but when I googled Gulfport, Louisiana the map that came up confirmed that there is such a city but showed me Gulfport, Mississippi, which is very close to New Orleans.  Maybe they are across the line from each other like Kansas City, Missouri and Kansas City, Kansas.   My brother has told me that I can be in charge of following the GPS instructions.  Ha ha ha ha ha!  Wish us luck, everyone. We may be roaming for a long time.