Population overview
Harris County is home to roughly 5,045,026 people, making up about 15.91% of the total population of Texas. Within the Gulf Coast region, it ranks #1 of 7 counties by population. The combination of 1,729 square miles of land and 5,045,026 residents yields a density of about 2917.9 people per square mile — a clearly metropolitan figure that signals concentrated urban development and dense infrastructure.
How Harris County compares
Compared with the other 253 Texas counties, Harris County sits in the top 10% of the population distribution. It is one of the top-tier urban counties driving Texas's overall growth and economy.
| Comparison | Population | vs Harris |
|---|---|---|
| Harris County | 5,045,026 | — |
| Gulf Coast region average | 1,022,840 | -80% |
| Texas county median | 18,916 | -100% |
| Largest in Texas (Harris) | 5,045,026 | — |
Neighboring county populations
Harris County shares borders with 7 counties. Comparing population across an adjacent corridor often reveals commuting patterns, school-district pull, and economic gravity.
| County | Seat | Population | Density |
|---|---|---|---|
| Fort Bend County | Richmond | 975,191 | 1114.5 |
| Montgomery County | Conroe | 781,194 | 748.3 |
| Brazoria County | Angleton | 419,080 | 302.1 |
| Galveston County | Galveston | 372,207 | 932.8 |
| Liberty County | Liberty | 121,364 | 104.6 |
| Waller County | Hempstead | 69,858 | 135.9 |
| Chambers County | Anahuac | 57,594 | 96.2 |
Frequently asked questions
What is the population of Harris County, Texas?+
Harris County has an estimated population of 5,045,026 residents, based on the most recent U.S. Census data.
What is the population density of Harris County?+
Harris County has a population density of approximately 2917.9 people per square mile across its 1,729 sq mi of land area — characteristic of a highly urbanized county.
Where does Harris County rank among Texas counties by population?+
Harris County ranks #1 out of 254 Texas counties by total population, accounting for roughly 15.91% of the state's total population.
What is the most populous county near Harris County?+
Among the 7 counties bordering Harris, Fort Bend County is the most populous with about 975,191 residents.
How is Harris County's population measured?+
Population figures are sourced from the U.S. Census Bureau — the decennial census and annual American Community Survey (ACS) population estimates. See our methodology for full sourcing.