Brewster County is the largest county by area in the state - at 6,192 square miles (16,040 km2) it is over three times the size of the state of Delaware, and more than 500 square miles (1,300 km2) bigger than Connecticut.
What is the largest county in Texas by size?
A: Of the 254 counties in Texas, Harris County is the largest by population with 3.8 million residents, and Brewster County is the largest county by size, covering 6,193 square miles.
What is the oldest county in Texas?
HOUSTON COUNTY, TX (KTRE) - Sam Houston declared Houston County the first in the Republic of Texas 175 years ago.