There’s a big Brazilian community in Cambridge/Somerville. There’s a bunch of restaurants and a grocery store. There’s also schools that teach kids in two languages, including Portuguese.

Not sure about income for a family of 4 as I’m single with no kids, but rent is pretty outrageous in Cambridge. I pay $2300 for a 2bd, which is almost unheard of, my landlord is just very nice and doesn’t raise the rent when he likes the tenants.