County Maps US

San Patricio County, Texas

A county in Texas, ranked 52 of 254 by population.

CountyFIPS 48409

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

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Population
72,053
+3,214 (+4.7%) since 2020
Land area
693.3
square miles. A further 2.0% of the total area is water
Population density
104
people per square mile, computed rather than published
County seat
Sinton
Seat of county government.
Established
1834
191 years ago
Largest city
Portland city
Population 20,833 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 San Patricio 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 San Patricio 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 460 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 San Patricio 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
Population72,05352nd of 254772nd of 3,144
Land area693.3 sq mi219th of 2541,350th of 3,144
Population density104 per sq mi49th of 254877th of 3,144
Median household income$69,70487th of 2541,218th of 3,143

Full data for San Patricio County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population72,053Vintage 2025 Population Estimates
Population in 202068,839Vintage 2025 Population Estimates
2020 estimates base?68,757Vintage 2025 Population Estimates
Land area693.3 sq mi2025 Gazetteer Files
Water area14.5 sq mi2025 Gazetteer Files
Total area707.8 sq mi2025 Gazetteer Files
Population density?104 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$69,704American Community Survey 2020-2024 5-Year Estimates
Median home value$192,400American Community Survey 2020-2024 5-Year Estimates
Median age37.0American Community Survey 2020-2024 5-Year Estimates
Households25,334American Community Survey 2020-2024 5-Year Estimates
Housing units30,435American 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
+125
872 births, 747 deaths
Net migration
+385
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 6 areas bordering San Patricio 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
Nueces CountyTexas100 mi352,992
Refugio CountyTexas41 mi6,657
Bee CountyTexas19 mi32,515
Aransas CountyTexas14 mi26,146
Live Oak CountyTexas14 mi11,929
Jim Wells CountyTexas12 mi38,804

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

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.