Counties in the North Texas region
All 36 counties, sorted alphabetically. Click any county for its full profile, map, and demographics.
Geography & character of North Texas
North Texas is anchored by the Dallas–Fort Worth Metroplex — one of the fastest-growing urban regions in the United States. It blends booming suburban counties, prairie farmland, and a dense network of interstates that connect Texas to the rest of the country.
Together, the 36 counties of the North Texas region cover roughly 29,960 square miles — that's 11.2% of Texas's total land area — and are home to about 9,088,115 residents, or roughly 303.3 people per square mile. The most populous county in the region is Dallas County (about 2,661,397 residents), while the largest by land area is Clay County (1,098 sq mi).
Frequently asked questions
How many counties are in the North Texas region?+
The North Texas region contains 36 of Texas's 254 counties.
Which is the largest county in North Texas by population?+
Dallas County, with about 2,661,397 residents.
Which is the smallest county in North Texas by population?+
King County, with about 192 residents.
What is the total area of the North Texas region?+
Approximately 29,960 square miles across all 36 counties.
How can I see a real map of the North Texas region?+
Use the interactive map at the top of this page — toggle Roads, Terrain, or Satellite basemaps to view authentic geography from Esri imagery, with all 36 county boundaries drawn from Census TIGER data.