Most people do NOT move for their family and friends are where they are at the present time (That is your "Network" and your "Support group"
. On the other hand, there are places where people can move to and get a cheap place to live if they have the income. Rents in Johnstown Pa are low for the simple reason the Johnstown Metro area has lost population over the last 50 years (Roughly 10% each decade). Thus we have a lot of abandoned homes and a lot of very good homes for tenants. i.e. we have more housing than we have Tenants.
Side note: Johnstown is a great place to live if you have income coming in, but it is terrible place to live if you are looking for work (the mines and Steel Mills are mostly closed down). I mention this only since you are on SSDI. On the other hand I do NOT know how far away from your support group (i.e. your family) is from Johnstown. If your family is to far away, you may be better off staying where you are. More expensive homes are in the suburbs of Westmont and Richland township Westmont was the main suburb from the 1890s till WWII (Westmont was built when the Johnstown Steel Company wanted his workers to feel that their families would be safe after the Johnstown Flood, so he build an incline plane to the top of the Mountain and started Westmont. In the 1930s the states built a highway up that mountain side and westmont expanded even more. Richland took took off in the 1960s when Pennsylvania built US 219 into a limited access highway right through Richland township, from the Pennsylvania Turnpike to US 22 (With an off shoot to Johnstown known as the PA 56 bypass).
I have been looking at this home, I would have to make it into one family house, but presently it is five apartments, all for $89,000 (An old mansion turned into apartments):

http://www.zillow.com/homes/for_sale/Johnstown-PA/pmf,pf_pt/2104169866_zpid/39173_rid/pricea_sort/40.511711,-78.792229,40.211916,-79.227562_rect/10_zm/
Here is another one I like, but at $265,000 out of my price range:

http://www.zillow.com/homes/for_sale/Johnstown-PA/pmf,pf_pt/2119247511_zpid/39173_rid/pricea_sort/40.511711,-78.792229,40.211916,-79.227562_rect/10_zm/
Johnstown has some small and cheaper homes, here is one for $6000. That is $6000 TOTAL price:

http://www.zillow.com/homes/for_sale/Johnstown-PA/pmf,pf_pt/2103728174_zpid/39173_rid/pricea_sort/40.511711,-78.792229,40.211916,-79.227562_rect/10_zm/6_p/
Just a comment that maybe moving is something you should look into, but remember talk to your support group i.e. your family first.
You got me looking at real estate.