http://FireDepartmentDirectory.com has maps of fire departments for every county and city in the US. You can look up the fire department that is closest to you, give them a call, and ask them for the nearest station. There isn't a single resource out there that has all the fire departments and associated fire stations. So, this makes the phone call necessary.
The fire department should also be able to tell you where the nearest fire hydrant is or be able to tell you how to find that information.
There is a regulation regarding the legal distance to fire hydrants. I do not know that Fire houses has a regulation. I do know that this is one of the questions that your home owners insurance asks. THe answers depend on the address, which I think you inadvertently left out of the question.
Just as an additional piece of advice. It is worth being sure that the fire hydrant you are depending on is in good working order. Not long ago I watched an beautiful century old home burn to the ground because there was no pressure in the hydrant that this house depended on.