a good way to boost your seo is to get mentioned on other peoples blogs etc. Also businesses you arent competing with. While there are old seo tricks like using hidden text, (text and page the same color) google is pretty savvy at determining you’ve done this. But you can enhance your seo using nav links which appear hidden.
But I’d make use of contacting businesses and maybe jointly including each others sites in a blog post.
If you’re willing to spend a tiny bit of money, facebook ads are generally super cheap... and you can target people of a specific zipcode and interest level. Don’t sell them something, give them free information in a blog type of post.
Thank you for that bit of information and will put that arrow in the quiver.