Oklahoma
Oklahoma shares most of Texas's northern border.
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Texas and Louisiana
The state that makes up most of its northern border is Nebraska.
Oklahoma
Oklahoma
The distance from the northern border to the southern border of Texas is approximately 800 miles. This measurement runs from the northernmost point near the Red River to the southernmost point at the Gulf of Mexico. Texas is the second-largest state in the U.S., contributing to this significant distance.
Louisiana
Washington State's northern border with Canada is a straight line from Blaine WA to its eastern border with Idaho. That northern border line is the most northern point.
Connecticut is north of New York's maritime border
South Dakota shares its northern border with Nebraska.