Blog · October 13, 2026 · Texas
San Patricio County GIS Map (Texas)
The free official GIS map for San Patricio County, how to search it, and what the parcel data does and doesn't tell you about owners, acreage and property lines.
Main page: San Patricio County, TX GIS & Parcel Viewer (official map link, San Patricio County facts and neighboring maps).
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Land questions in San Patricio County start in the same place: the official parcel map. Here's how to use the San Patricio County GIS map to find owners, acreage and boundary lines, and where it falls short.
The sections below cover the map itself, the towns from Sinton to Falman, and the deeds and surveys that settle what the map can't.
Who uses the San Patricio County parcel map
- Relocating buyers who can't visit Portland in person use the map and aerial layer to size up a lot from a distance.
- Builders bidding a house on a lot in Portland start with the parcel ID and legal description, since permit paperwork usually asks for both.
- Turkey hunters near Corpus Christi use the map in spring to confirm which fields their permission actually covers.
- Folks shopping for raw land click through empty parcels near Sinton, note the owners, and send letters.
Opening the San Patricio County GIS map
The San Patricio CAD interactive map is the county's own public parcel viewer; it runs on a BIS Consulting map viewer. In San Patricio County, the appraisal map pop-up shows the property ID, owner and legal description; copy the ID before you close the tab. We track the link on our San Patricio County directory page, so check there if it stops loading.
What the map covers, from Sinton to the back roads
Sinton is the county seat, and other towns on the map include Aransas Pass, Corpus Christi, Ingleside, and Portland. Out in the countryside, Del Sol, Edgewater Estates, and Edroy appear as small knots of lots along the road network. By Census Bureau figures, the county had roughly 70,660 residents in 2023, spread over about 693 square miles of land. Expect suburban-style lots near Sinton and plenty of rural ground once the subdivisions thin out.
Property lines in San Patricio County, Texas
On rural tracts near Falman, the parcel lines can drift from the fences on the ground, sometimes by more than a few feet. Ranch tracts near Sinton are described by survey name and abstract number, which you can usually find on the appraisal map. For rural ground near Falman, a recorded survey or a new one is the only reliable source for the true line.
Work and land use in San Patricio County
Of the 1,115 establishments the Census Bureau counted in San Patricio County for 2022, the biggest groups were accommodation and food services, retail trade, and other services. Relative to the U.S. as a whole, San Patricio County is heavy on primary metal manufacturing, oil and gas extraction, and support activities for mining and drilling. A surface parcel near Corpus Christi may not include the minerals beneath it, which is common where extraction is active. For a land buyer in San Patricio County, that mix hints at who your neighbors and competing bidders are likely to be.
Behind the map: land records in San Patricio County
The appraisal district handles assessments, while recorded deeds and plats for San Patricio County are kept by the county's land records office. For a tract near Ingleside, the appraised value is set by the San Patricio County appraisal district, which Texas law keeps separate from county government. If you need a plat for a lot in Portland, look for the plat book and page or the subdivision name in the parcel record, then request that document from the recording office.
Near the county line
Looking at land between Ingleside and the Aransas County line? Remember that Aransas County, Bee County, Jim Wells County, Live Oak County, and Nueces County each keep separate parcel records. Neighboring maps for San Patricio County are a click away on our Texas page.
Frequently asked questions
How can I tell who owns land near Sinton?
Look up the address in Corpus Christi, or click the tract. Owner names on the San Patricio County map come from recorded deeds.
Does the San Patricio County, TX map show flood zones?
Look in the layer list of the San Patricio CAD interactive map. If there's no flood layer, FEMA's flood map service covers San Patricio County.
How do I find property lines in San Patricio County?
Map first, then the recorded plat or deed, then a survey: that order works for any boundary question in San Patricio County.
Can hunters use the San Patricio County, Texas parcel map to find landowners?
Use it to find the owner of a woodlot near Corpus Christi, then ask; the map itself grants no hunting rights.
Open the official San Patricio County, TX parcel map San Patricio County in the Platbookmapper directory
Not a survey. County GIS and tax parcel maps are assessment and planning layers. They are not a substitute for a recorded plat, deed, or licensed survey, especially for fences, setbacks, or boundary disputes.