The other half of what needs to be offered is jobs.
+10000
That's what brought Jewish communities to various places to begin with. Slaughterhouses and other jobs. Bring a big employer that will cater to a frum crowd, along with some infrastructure (at least a mikvah, a pre-school and a grocery store. Some will say also a Pizza store) and you can get people to move in.
Another option is to offer the building (or buildings if they exist) to a Yeshiva. A Yeshiva will be happy to get a good building for free, and will bring the staff, families etc. and build a community around it.