Texas Counties, Demographics & Geography
Complete official guide to all 254 counties in Texas (TX). Explore 2024 US Census population estimates, county seats, FIPS codes, land areas, and interactive mapping tools powered by GeoMap Suite.
Texas County Breakdown
Showing 12 of 12 documented counties and seats.
County Name | FIPS | County Seat | Population (Census) | Land Area | Quick Tool |
|---|---|---|---|---|---|
| Harris County (Houston) | 48201 | Houston | 4,779,888 | 1,704 sq mi | Lookup |
| Dallas County | 48113 | Dallas | 2,600,840 | 871 sq mi | Lookup |
| Tarrant County (Fort Worth) | 48439 | Fort Worth | 2,154,595 | 864 sq mi | Lookup |
| Bexar County (San Antonio) | 48029 | San Antonio | 2,059,530 | 1,240 sq mi | Lookup |
| Travis County (Austin) | 48453 | Austin | 1,326,437 | 990 sq mi | Lookup |
| Collin County (Plano/McKinney) | 48085 | McKinney | 1,158,696 | 848 sq mi | Lookup |
| Denton County | 48121 | Denton | 977,281 | 888 sq mi | Lookup |
| Hidalgo County (McAllen) | 48215 | Edinburg | 888,367 | 1,569 sq mi | Lookup |
| El Paso County | 48141 | El Paso | 868,859 | 1,013 sq mi | Lookup |
| Fort Bend County (Sugar Land) | 48157 | Richmond | 858,527 | 862 sq mi | Lookup |
| Montgomery County (Conroe) | 48339 | Conroe | 657,358 | 1,044 sq mi | Lookup |
| Williamson County (Round Rock) | 48491 | Georgetown | 643,024 | 1,118 sq mi | Lookup |
Geographic Structure of Texas Counties
County Administration & Governance
In Texas, county governments manage vital public infrastructure, tax assessments, law enforcement, judicial courts, election administration, and public records. The county seat (Houston and other municipal headquarters) houses the primary courthouse, commissioners, and sheriff’s department.
All Texas counties carry a unique 5-digit Federal Information Processing Standard (FIPS) code, where the first two digits (48) designate the state and the remaining three digits identify each specific jurisdiction.
Geographic & Demographic Highlights
- Most Populous County:Harris County (Houston) (4,779,888 residents)
- Largest by Land Area:Harris County (Houston) (1,704 sq mi)
- State Capital:Austin
- Census Bureau Region:South United States
Demographic calculations derive from the United States Census Bureau 2024 Population Estimates Program (PEP) and TIGER/Line geographic boundary files.