Wisconsin PLSS Converter — Section Township Range to GPS

Wisconsin is surveyed under the Fourth Principal Meridian, whose initial point was established in 1831 at the confluence of the Fox and Wisconsin Rivers near present-day Portage. Wisconsin was among the first states fully surveyed under the rectangular system, and the quality and completeness of its early GLO surveys set a standard that influenced later work across the Midwest. By the time Wisconsin achieved statehood in 1848, most of the southern half of the state had already been surveyed and opened to settlement.

The Fourth Principal Meridian baseline runs eastward from its initial point toward Lake Michigan, and range lines extend both east and west from the meridian line passing through central Wisconsin. The state's township numbers increase northward from the baseline, reaching into the high 40s in the northernmost counties bordering Lake Superior. The original surveys captured Wisconsin's complex geography: the drumlin fields and glaciated lowlands of the south, the Central Sand Plains, the Northern Highland lake district, and the Lake Superior lowland — each presenting different survey conditions and resulting in different patterns of government lots and irregular sections.

Wisconsin's dairy farming heritage, paper and pulp industry, and extensive north woods timber lands all depend on PLSS descriptions for daily land management. The state has one of the highest rates of small-parcel agricultural land transactions in the Midwest, driven by farm succession and consolidation activity. Its northwoods lake country — with more than 15,000 inland lakes — generates a constant flow of shoreline real estate transactions where government lot descriptions must be translated to GPS coordinates for permitting, title work, and boundary surveys.