To be honest, we approached the ISP, who was offering fiber in a town 45 minutes away. They said if we could get sign ups at least every half mile, on average, they would make it happen. We had the signatures when they got the grant, so it was sort of a wasted effort on our part.
I'll message here tomorrow if I figure it out though.
What state are you in? There are quite a number of state grants, depending on where you are.
For real though. Talk to one of their planners and see if they have a number of necessary sign-ups. We did a signature campaign and had what we needed before the grant existed. They had committed to our stretch of fiber before they had the grant, we just had to all sign contacts for services. It took a year or so of knocking on doors. And that was to run the line about 40 miles.