County Maps US

Harris County, Texas

The most populous of Texas's 254 counties.

CountyFIPS 48201

Within Texas
Harris County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Houston, the county seat, located via the 2025 Census Gazetteer.

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Population
5,045,026
+310,966 (+6.6%) since 2020
Land area
1,707
square miles. A further 3.9% of the total area is water
Population density
2,955
people per square mile, computed rather than published
County seat
Houston
Seat of county government.
Established
1836
189 years ago
Largest city
Houston city
Population 2,347,346 for the whole place, which extends beyond this county.

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; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Harris County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Harris County, Texas from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 800 by 612 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Harris County ranks

Position among the 254 counties of Texas, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn TexasNationally
Population5,045,0261st of 2543rd of 3,144
Land area1,707 sq mi14th of 254352nd of 3,144
Population density2,955 per sq mi2nd of 25437th of 3,144
Median household income$74,98352nd of 254842nd of 3,143

Full data for Harris County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population5,045,026Vintage 2025 Population Estimates
Population in 20204,734,060Vintage 2025 Population Estimates
2020 estimates base?4,730,408Vintage 2025 Population Estimates
Land area1,707 sq mi2025 Gazetteer Files
Water area69.9 sq mi2025 Gazetteer Files
Total area1,777 sq mi2025 Gazetteer Files
Population density?2,955 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$74,983American Community Survey 2020-2024 5-Year Estimates
Median home value$276,600American Community Survey 2020-2024 5-Year Estimates
Median age34.6American Community Survey 2020-2024 5-Year Estimates
Households1,757,164American Community Survey 2020-2024 5-Year Estimates
Housing units1,917,790American Community Survey 2020-2024 5-Year Estimates

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; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
+34,861
65,753 births, 30,892 deaths
Net migration
+13,848
More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 7 areas bordering Harris County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Montgomery CountyTexas67 mi781,194
Waller CountyTexas43 mi69,858
Chambers CountyTexas41 mi57,594
Fort Bend CountyTexas28 mi975,191
Galveston CountyTexas27 mi372,207
Liberty CountyTexas24 mi121,364
Brazoria CountyTexas18 mi419,080

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

Side by side

All 254 counties of Texas

Open the interactive Texas county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.