Dad was in occasional contact with neighbors and their families, and other people at the little town's Methodist church, and at least some of the other townspeople - plausibly on the order of 150 total.
But yes - the social feel would have been very different from working 40 hour weeks at an in-person office with 150 coworkers.
i do think there is a weird diaspora that comes from being 'technically in contact' with large swaths of people (say, your 150 person company) but physically in contact with very few, vs. being in obvious isolation (aka on a farm with just your family + known hired hand around.)