Hey there Ursa! I don't live in NW IN any more, but I'm from there originally - the Valparaiso/Merrillville area. I live in Bloomington now and the gay community here is great. I do have a few friends who live in portage and surrounding areas. They hang out in a bar in Lake Station called Encompass.
Here's some info about the bar - Encompass Nightclub
Corner of Central & Rush St., Lake Station, Indiana (219) 962-4640 (3pm - 3am Mon-Sat)
Male/Female, Entertainment, Dancing
Also they play flag football and softball, so maybe try joining one of those leagues.
There's a thread on queer parenting somewhere about chicagoland queer parents. Maybe someone can resurrect that?