41st parallel north

The 41st parallel north is a circle of latitude that is 41 degrees north of the Earth's equatorial plane.

Starting at the Prime Meridian and heading eastwards, the parallel 41° north passes through:

:

United States

In the United States, the parallel defines the southernmost border of Wyoming (bordering Utah and Colorado), and part of the border between Nebraska and Colorado.

As originally set by King Charles II of England in 1664, the point at which the 41st parallel crosses the Hudson River marks the northeastern border of New Jersey with New York. New Jersey's northern border then proceeds west to the eastern-most point of the Delaware River.

The 41st parallel was also one of the principal baselines used for surveying a portion of lands in Ohio. This marked the southern boundary of the Connecticut Western Reserve and the Firelands using the western boundary with Pennsylvania as the principal meridian. It also served as the baseline for a later survey of Ohio land north of the Greenville Treaty line up to the Fulton line which was the original boundary between Michigan and Ohio under the Northwest Ordinance (see the Toledo Strip). The later survey used the boundary with Indiana as the meridian.