Anything in 1N is in Clark County. Switzerland County is much more complicated and I will address that separately. Think of the section number as the house number, which pins down the location. A range is six sections wide from east to west. A township spans six sections deep from north to south.
Land is divided into Congressional townships and townships are further divided into sections.
These Congressional townships have no legal standing. Each Congressional township has 36 sections. Each section contains 640 acres, exactly one square mile. From an airplane, you can easily see the impact of this system in flat areas of the Midwest, because many fields and roads are laid out in the squares. It s harder in places like eastern Jefferson County or western Switzerland, where hills and streams provide natural borders.