Linda, knowing you make $48k a year isn't enough information to figure out your marginal tax rate. Some tax prep services will tell you the marginal tax rate when they prepare your taxes. If your marginal tax rate is 28% then you will get back 28% of 48,000 if that is your marginal tax rate after you itemize deductions. You will also get back that same percentage of the interest you pay on your mortgage. Since you know the taxes of the home you want to buy I could assume you already have an agent that is working for you (at least I hope they are working FOR you and not for the seller).
Since that agent is going to get paid when you settle, you should feel free to ask them questions such as this and although generally they might not be able to answer they should be able to refer you to an accountant who can.
You can't generalize and conclude that it is cheaper to buy a house where taxes are cheaper. The tax rate of various towns depends on their budget (which depends on services provided such as police, fire, schools etc) in conjunction with their tax base. Not only that but since it has been years since some towns were reassessed there are wide variations in the taxes for similar property even within the same town.
If this has confused more than helped that is probably a good thing because you won't stop asking questions. You should expect the agent you have chosen, to help you get answers.