The Unorganized Borough is the part of the U.S. state of Alaska not contained
in any of its 19 organized boroughs. It encompasses more than half of Alaska's
area, 323,440 square miles, an area larger than any other US state.
The largest by far is Alaska with 663,267.26 square miles. The next largest is Texas with 268,580.82 square miles.
By population it is Los Angeles County, California (10 million +) and by area it is San Bernardino County, California (21,000 square miles). The largest "county equivalent" by area is Yukon-Koyukuk Census Area in Alaska (147,805 square miles). It is part of Alaska's Unorganized Borough and has no county seat. Its population is less than 6000.
San Bernardino County in California is the largest county in the USA by land area.
The largest county in South Carolina in terms of square miles is Horry County, with an area of around 1,134 square miles.
Nye County is the largest county in Nevada in terms of size, covering approximately 18,147 square miles.
Texas Counties and County Trivia: Texas has some large counties like its largest Brewster County at 6,193 square miles. Texas has no county that fits into the 25 largest counties (or equivalent units) in the US, with seven Alaska counties at 12,750 square miles each or larger.Pecos County at 4,764 square miles.Hudspeth County at 4,571 square miles.Presido County at 3,856 square miles.Webb County at 3,357 square miles.Val Verde County at 3,171 square miles.
It is Ware County with 903 square miles.
Shelby County is the largest county in Tennessee by square miles, covering an area of approximately 784 square miles.
Worcester County with 1,513 square miles.
Keweenaw County - 5,966 square miles.
Brewster County is the largest county in Texas at 6,193 square miles.
Alaska