San Patricio County GIS Maps
San Patricio County, Texas, has 68,755 residents across 37,759 parcels and covers 693.4 square miles. The population grew 6.1% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for San Patricio County is 48409.
Portland is the county's largest population center. San Patricio County also includes 9 zip codes, 8 public school districts and 13 municipalities. Those boundaries help explain why population, schools, and housing can look different from one part of the county to another. The map below shows how those county lines, zip codes, and school districts fit together, and the sections that follow use that same geography to show parcel data, population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers, Parcels and sample data. Paid packages add full layers, analytics and database files.
San Patricio County Trends
- Population
- 68,755▴
- Median Home Value
- $180,400▴
- K-12 Enrollment
- 14,623▾
County analytics dashboards with historical trends & projections included in package downloads.
Free starter access previews county maps, lightweight GIS, and sample data. Paid packages unlock full GIS layers, analytics, and database files.
San Patricio County Maps
The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.
County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.
San Patricio County Parcels
San Patricio County has 37,759 mapped parcels covering 380,028 acres. The median assessed value is $171,429. The median lot size is 0.22 acres. 3,472 parcels are 10 acres or larger. The records carry 28,075 distinct owner names. About 4% of parcels list an owner mailing address outside Texas. Owner names, mailing addresses, site addresses, assessed values and lot sizes are on nearly every parcel. Browse the interactive San Patricio County Parcel viewer here.
San Patricio County Parcel Data Coverage
| Field | Parcels | Coverage |
|---|---|---|
| Parcel ID | 37,763 | 100% |
| Owner name | 37,458 | 99.2% |
| Owner mailing address | 37,763 | 100% |
| Site address | 37,763 | 100% |
| Land use code | 37,458 | 99.2% |
| Land use description | 0 | 0% |
| Assessed value | 37,763 | 100% |
| Land value | 37,763 | 100% |
| Improvement value | 37,763 | 100% |
| Acreage | 37,763 | 100% |
| Parcel boundary | 37,759 | 99.9% |
| Download all San Patricio County parcels. | ||
Field coverage measured across all San Patricio County parcel records.
San Patricio County Population
San Patricio County had 68,755 residents in 2020. That was 6.1% higher than in 2010. San Patricio County added 1,617 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 99 people per square mile. Some of the county's most populated postal areas include Portland, Aransas Pass and Ingleside.
Population Trend in San Patricio County TX
San Patricio County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
San Patricio County Zip Codes
San Patricio County has 9 zip codes. Some of the county's most populated zip codes include Portland (78374), Aransas Pass (78336) and Ingleside (78362). Portland is the largest zip by population, with about 20,281 residents or 29% of the county total. Together, the three largest zips account for about 62% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in San Patricio County TX
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 78374 | Portland | 20,281 | ▴ 22% |
| 78336 | Aransas Pass | 12,009 | ▴ 0.5% |
| 78362 | Ingleside | 10,238 | ▴ 8.4% |
| 78387 | Sinton | 9,936 | ▴ 3.8% |
| 78368 | Mathis | 8,726 | ▾ -5.4% |
| Download all zip code data | |||
San Patricio County Zip Code populations and trends per most recent census data.
San Patricio County Demographics
San Patricio County has a median age of 37.1, which makes the county a little older than Texas overall. About 26% of residents are under 18, while 15.4% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 25 to 44 at about 32.5% of the population, which points to a solid working-age base. About 17.2% of adults have a bachelor's degree or higher, above the statewide figure of 33.1%. The county has a more diverse population mix, with no single race or ethnicity accounting for all of the local story.
Key Demographics for San Patricio County TX
Median Age
37.1
Under 18
26%
Age 65+
15.4%
Bachelor's+
17.2%
San Patricio County School Districts
San Patricio County is served by 8 public school districts with 14,623 students enrolled in 2024. The largest districts on the county map are Gregory-Portland Independent, Ingleside Independent and Sinton Independent. Those three districts account for about 62% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, but it is slightly lower than it was in 2017.
Largest School Districts by Enrollment in San Patricio County TX
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Gregory-Portland Independent School District | 5,024 | 34.4% | ▴ 1.2% |
| Ingleside Independent School District | 2,071 | 14.2% | ▴ 3% |
| Sinton Independent School District | 1,961 | 13.4% | ▾ -3.1% |
| Aransas Pass Independent School District | 1,624 | 11.1% | ▾ -6.2% |
| Mathis Independent School District | 1,429 | 9.8% | ▾ -1.2% |
| Download all school district data | |||
San Patricio County school district enrollment and trends per most recent NCES reporting data.
San Patricio County Housing & Real Estate
San Patricio County has a median home value of $180,400 and a median gross rent of $1,239. About 66% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the Texas median, while rents come in below the state average. In March 2026, the median listing price was $276,100 and homes spent about 83 days on the market.
San Patricio County Housing Mix
San Patricio County housing mix: owner, renter and vacant units.
San Patricio County Housing Trends
San Patricio County median home value and rent trend (last 5 years).
Businesses in San Patricio County, TX
San Patricio County has 2,554 business listings across 454 categories. The largest categories in San Patricio County business listings are Churches & Religious Organizations (81, 3.2%), Convenience Stores (71, 2.8%), and Rv Park (51, 2.0%). The full San Patricio County business listings dataset includes names, categories, addresses and contact details where available. San Patricio County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in San Patricio County, TX
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 81 | 3.2% |
| Convenience Stores | 71 | 2.8% |
| Rv Park | 51 | 2.0% |
| Gas Stations | 47 | 1.8% |
| Landmark And Historical Building | 41 | 1.6% |
| Hotels | 39 | 1.5% |
| ATMs | 39 | 1.5% |
| Fast Food | 38 | 1.5% |
| Parks & Recreation | 36 | 1.4% |
| Auto Repair | 35 | 1.4% |
San Patricio County Business Listings
| Business | Category | City |
|---|---|---|
| Shoreline Inc | Abuse And Addiction Treatment | Taft |
| Casa De Oro | Accommodation | Sinton |
| Jackson & Rodriguez, LLC | Accountant | Ingleside |
| Gregory-Portland Softball Complex | Active Life | Portland |
| Deleon Sign Co. | Advertising Agency | Mathis |
| Raleigh Smith, MD, FACS | Aesthetician | Aransas Pass |
| Edcot Coop Gin | Agricultural Cooperatives | Odem |
| Hartzendorf Gin | Agricultural Service | Sinton |
| Hlavinka Equipment Company | Agriculture | Taft |
| McCampbell Porter Ingleside Airport | Airport | Aransas Pass |
| Download San Patricio County business listings | ||
San Patricio County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
San Patricio County Basemaps
San Patricio County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.
Get the Full San Patricio County Data Package
This page shows a preview of what's included in the San Patricio County data package. The full package gives you a ready-to-use county data system with GIS layers, historical data, maps, database files and planning tools that save hours of manual data gathering, cleanup and joins. Everything is organized to help you skip data wrangling and start analysis faster.
- 20+ GIS layers for parcels, zip codes, school districts, roads, water, boundaries and more
- Historical county demographics, housing, income and trend data
- ZIP code population files and school district enrollment history
- Database files, markdowns, AI-ready prompts and documentation
- Map exports in PNG, JPEG, PDF, SVG and GeoTIFF formats
- Offline-ready data explorer, map and analytics tools
Paid packages support commercial use, client work, and derived outputs. Some package contents may include source-specific attribution or provider notices. See Licensing & Data Source Notices.
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Nearby Counties
Browse county data pages for the counties that border San Patricio County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.