Blog · October 14, 2026 · Texas
Castro County Plat Book: finding and using one
With a lot near Dimmitt, plat books show ownership by township; the parcel viewer shows it today.
Main page: Castro County, TX GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Looking for a Castro County plat book? It's a printed atlas of landownership, usually by township, useful for farms near Hart. In this Castro County guide: how the atlas is organized, where to look for printed copies, and the free online map that stays current.
Getting started with the Castro County plat book
Out toward Frio, a plat book is a privately published atlas, showing rural owners and tract lines, often organized by township.
The free map to start with
For land near Easter, the public parcel map for this area is the Castro CAD interactive map, and no login is needed to use it. Out toward Hart, type a street address, an owner's name or a parcel number, and the viewer zooms to the match. In and around Hart, copy the parcel ID from that panel; each clerk in the county uses it to find the file.
On site with the map
Most viewers work in a phone browser, useful out on a road near Frio, though signal can drop in rural spots. A printout of the tract near Hart is a good backup.
Land on the county line
Castro County borders Deaf Smith County, Hale County, Lamb County, Parmer County, and Randall County, and each of those keeps its own parcel map. Ground near Easter that runs to the line may show up in two county records, so open the neighboring map before you assume the acreage. On ground around Flagg, our state page links every bordering county map for Texas.
Buying or borrowing a copy
Editions come and go depending on publishers, try the county extension office, recorder's office or library near Summerfield.
Printing your own
Print parcel views near Dodd township by township and keep them in a binder for the truck.
Between editions
Between printed editions, the Castro CAD interactive map shows current owners, across the county, which applies near Hart as much as anywhere.
Limits of the parcel data
If the land is near Easter, acreage on the record is a tax-roll number; only a licensed surveyor establishes the real boundary on the ground. For land near Easter, records update in batches, so a deed recorded last month might lag behind.
Legal descriptions in Texas
Older tracts around Summerfield commonly use metes-and-bounds descriptions, a series of courses and distances from a starting point. Platted lots around Flagg refer to a recorded plat, making them easier to find. Copy the legal description from the record for the parcel near Frio when you talk to a surveyor.
Getting answers from the right desk
If the acreage or value on a parcel near Summerfield looks off go to the appraisal district, the office behind the parcel record. Zoning, permits and septic questions near Dimmitt go to planning, building or health offices, town or county, depending on location.
Why people still buy them
Buyers and seed dealers around Nazareth rely on them for a big-picture view of who owns what.
Not the same thing
Around Easter, don't confuse the atlas with a recorded subdivision plat: the recorded plat at the County Clerk is a legal document, and the atlas is just a guide.
Places you'll see on the map
Dimmitt holds the county offices, home to the main records offices. You'll also find Hart, Nazareth, Summerfield, and Dodd, where town lots give way to larger tracts. Roughly 7,227 people live in Castro County (Census estimate, 2023) across roughly 894 square miles. Castro County dates to 1891, and some chains of title near Dimmitt are long.
The paper trail behind a parcel
When the details count, request the recorded deed from the County Clerk; the parcel line is a drawing of it, and that holds around Hart too. For a home near Easter, use the instrument number listed on the parcel record so staff can find the deed fast.
Quick answers
How accurate are plat book acreages for land near Dimmitt?
It depends, but atlas drawings near Dimmitt are simplified.
How do I research old landowners for land near Dodd?
For a tract near Nazareth, libraries and historical societies hold older editions.
Plat book or parcel viewer around Dimmitt?
For acreage around Frio, the Castro CAD interactive map is free and updated more often.
Is a plat book legal proof for land near Frio?
With a lot near Easter, a plat book is a privately published atlas; use a surveyor for lines.
Who do I call about a parcel near Nazareth?
Out toward Nazareth, the appraisal district handles values and the tax roll, and the County Clerk keeps deeds.
Is there a current Castro County plat book?
In most cases, the extension office or courthouse near Frio usually knows; ask local offices.
Open the official Castro County, TX parcel map See it 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.