Texas Abstracts — The County-Scoped Land ID

The abstract number is the most common identifier in the Texas Survey System. Every original land grant in Texas — Spanish, Mexican, Republic-of-Texas, State of Texas, or railroad-era — was indexed by the Texas General Land Office (GLO) and assigned an abstract number unique within its county. When you see a description like A-123 Reeves County, that is an abstract reference.

This article covers what an abstract is, how the numbering works, and what makes it different from the PLSS section system that most other US states use.

What an Abstract Is

An abstract is GLO's indexing record for a single original land grant. The abstract entry contains:

• The abstract number — a unique numeric ID within the county
• The original grantee — the person, family, or company the grant was issued to
• The survey name — usually the grantee's name plus "Survey" (e.g., John Smith Survey)
• The patent date — when the original grant was finalized
• The acreage — the size of the original grant
• The survey type — Spanish league, labor, railroad block, etc.
• A reference to the field notes and survey plat stored in the GLO archives

The polygon for an abstract is defined by the field notes — the original surveyor's description of the grant's metes and bounds. Modern TXSS conversion resolves an abstract reference against GLO's digitized polygons for that county.

How Abstracts Are Numbered

Each county maintains its own abstract number sequence:

• Abstract numbers start at 1 and run up to several thousand depending on the county
• The numbers were assigned roughly in order of grant date, but the system was indexed alphabetically by grantee in many counties, so the order is not strictly chronological
• The number itself has no geographic meaning — A-1 is not in any particular corner of the county
• The same number exists in many counties. A-123 in Reeves County is a different parcel than A-123 in Bowie County or A-123 in Bexar County

This last point is critical: abstract references are always county-scoped. Omitting the county makes the reference ambiguous.

How an Abstract Reference Looks

You will see abstracts written in several forms, all equivalent:

Township America's parser accepts all of these. It is case-insensitive and tolerates extra punctuation.

Where Abstract Descriptions Dominate

The abstract-only convention is the dominant TXSS shape in three regions:

East Texas (Piney Woods)

Counties along the Louisiana and Arkansas borders — Bowie, Cass, Marion, Harrison, Panola, Shelby, San Augustine, Sabine — were settled early under Spanish, Mexican, and Republic-of-Texas grants. The grants were often small (a few hundred acres) and irregular, fitting the river-and-bayou terrain rather than a rectangular grid. Abstract-only is the natural reference because there are no railroad blocks or named regional surveys to anchor a Block & Section convention.

The Coastal Bend

Counties like Aransas, Refugio, San Patricio, and Calhoun were settled under empresario contracts in the Mexican era — large grants made to colonizers who in turn subdivided and reassigned them. The resulting parcels are referenced by their GLO abstract numbers.

Small-grant counties in Central Texas

Throughout Central Texas, you will find counties where the abstract-only convention predominates simply because the original grants were small and named for individual settlers, not railroads.

Abstracts in Title Work

In a Texas county courthouse, real-property records are indexed by abstract number. A typical deed reads:

All of that certain tract or parcel of land out of the W.B. Rogers Survey,
Abstract No. 475, in Midland County, Texas, being more particularly
described as follows: [metes and bounds calls]

The abstract reference identifies the broader survey polygon; the metes-and-bounds calls describe the specific parcel within it. Modern title work begins with the abstract reference (to find the GLO survey), then traces the conveyance chain through county deed records to identify the specific parcel.

Abstracts in Oil and Gas

In Texas oil and gas work, abstract references appear in three places:

Mineral deeds and oil and gas leases

An undivided 1/32 mineral interest in and under the SE/4 of the
Sam Houston Survey, Abs. 321, Karnes County, Texas

The abstract identifies the survey polygon; the SE/4 is a colloquial quarter reference (south-east quarter of the named survey, not a PLSS quarter section). This is one of the few places quarter references appear in TXSS.

Texas Railroad Commission (RRC) filings

RRC drilling permits and well headers use the abstract as the survey reference, with footage calls from survey lines:

660 FNL, 660 FEL, T.J. Borden Survey, Abs. 89, Upton County, Texas

"660 feet from the north line, 660 feet from the east line" of the abstract polygon — the Texas equivalent of a footage call on a PLSS section, but referenced from survey lines rather than section lines.

Lease databases

Most Texas operators key their lease and well data on (county_fips, abstract_no) tuples. The pair is the primary key for Texas land work the same way (section, township, range, meridian) is for PLSS.

How to Resolve an Abstract

If you have an abstract reference and need to find the polygon on the ground, you have three options:

1. GLO directly — The Texas General Land Office maintains digital abstract maps for every county. You can look up an abstract by county and number.
2. County appraisal district — Each county appraisal district publishes the abstracts within its jurisdiction. Some have interactive maps; others only PDFs.
3. Township America — Paste the abstract reference into the converter and get the polygon, centroid, and acreage back. The resolver uses GLO data normalized across all 254 counties.

Comparing Abstracts to PLSS Sections

For PLSS readers, the closest analog to an abstract is the section — but the comparison is rough:

The biggest practical difference: a PLSS reader can sketch the layout of a township on a napkin (the serpentine 1–36 numbering is universal). Texas abstracts have no such universal layout — each county is its own diagram, and the abstracts inside it have no consistent geographic pattern.

Converting an Abstract to GPS

Township America's converter accepts abstract references in any format:

A-123 Reeves County, TX
Abstract 250, Bowie County
Abs 47 Pecos Co.

The response includes centroid, polygon, acreage, county FIPS, and the canonical survey name. For batch workflows and API access, see Convert Texas Abstract to GPS Coordinates.

Try the Texas converter →