The largest county in Texas
There are two right answers. By land area it is Brewster County; by population it is Harris County. Which one you want depends on what you meant by largest.
Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025. Retrieved 30 August 2026.
By land area
| Rank | Name | Land area | Population |
|---|---|---|---|
| 1 | Brewster County | 6,184 sq mi | 9,458 |
| 2 | Pecos County | 4,764 sq mi | 14,560 |
| 3 | Hudspeth County | 4,571 sq mi | 3,433 |
| 4 | Presidio County | 3,855 sq mi | 5,433 |
| 5 | Culberson County | 3,812 sq mi | 2,267 |
| 6 | Webb County | 3,361 sq mi | 281,224 |
| 7 | Val Verde County | 3,145 sq mi | 47,835 |
| 8 | Crockett County | 2,807 sq mi | 2,769 |
| 9 | Reeves County | 2,635 sq mi | 12,138 |
| 10 | Terrell County | 2,358 sq mi | 702 |
By population
| Rank | Name | Population | Density |
|---|---|---|---|
| 1 | Harris County | 5,045,026 | 2,955 per sq mi |
| 2 | Dallas County | 2,661,397 | 3,048 per sq mi |
| 3 | Tarrant County | 2,248,466 | 2,598 per sq mi |
| 4 | Bexar County | 2,160,088 | 1,741 per sq mi |
| 5 | Travis County | 1,389,670 | 1,398 per sq mi |
| 6 | Collin County | 1,297,179 | 1,541 per sq mi |
| 7 | Denton County | 1,069,346 | 1,217 per sq mi |
| 8 | Fort Bend County | 975,191 | 1,131 per sq mi |
| 9 | Hidalgo County | 921,549 | 587 per sq mi |
| 10 | El Paso County | 877,858 | 866 per sq mi |
And the smallest
More on Texas
Rebuilt from source data 30 August 2026. How these figures are produced.