Blog · October 14, 2026 · Texas
Blanco County Plat Book in Texas
What a Blanco County plat book is, where to locate one around Johnson City, and the free map that covers the gaps.
Main page: Blanco County, TX GIS & Parcel Viewer (official map link, Blanco County facts and neighboring maps).
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The printed Blanco County plat book and the online parcel map answer the same question, who owns the land near Johnson City, in different ways. This guide covers finding a printed edition for Blanco County, Texas, and using the free parcel map in the meantime.
What's inside a county plat book
A plat book, sometimes called a land atlas, lists each township in Blanco County as a page, with ownership blocks labeled by owner name and approximate acreage. Don't confuse it with a subdivision plat on file for lots in Round Mountain; that recorded plat is a legal document, while the atlas is a reference.
Step one: the free Blanco County viewer
Blanco County publishes its parcels on the Blanco CAD interactive map, which runs on a BIS Consulting map viewer, free to use for a lot in Round Mountain or a property near Blowout. Rural accounts near Blowout list an abstract in the legal description; copy it with the county property ID. For a backup route to the map covering Blowout, our Blanco County directory entry keeps the link current.
Where Blanco County plat books turn up
Private publishers have printed plat books for many rural counties, but editions for Blanco County come and go; ask at the courthouse, the extension office or a farm supply store in Blowout. Older editions are useful for family history around Round Mountain, showing who held a farm decades ago.
What a plat book page lists near Blowout
A typical atlas page for a township near Blowout lists sections, roads and streams, with each ownership block labeled. Acreage printed in a county atlas is approximate; the deed and a licensed survey decide the real figure for a property near Johnson City. If you use a plat book for hunting permission near Blowout, recheck the owner on the county map first.
Old atlases and family history in Blanco County
Comparing two Blanco County editions side by side lists when a farm near Round Mountain was split or sold. Some buyers print the county parcel map at township scale to carry on back roads near Round Mountain.
The Blanco County economy in brief
County Business Patterns counted 416 business establishments in Blanco County for 2022, led by construction, accommodation and food services, and retail trade. Compared with national shares, Blanco County leans toward beverage and tobacco manufacturing and heavy and civil engineering construction, which shapes demand for land near Round Mountain.
The lay of the land around Johnson City
Town lots cluster around Johnson City, the county seat, and Blanco and Round Mountain. Unincorporated communities in the county, including Blowout, Cypress Mill, and Flugrath, show up as small groups of parcels along the roads. Roughly 709 square miles of land and about 13,048 residents (2023 estimate) make up Blanco County. Outside Round Mountain, most of the county map is farm, ranch or timber ground with large, irregular tracts. Blanco County was organized in 1858, so deeds for older farms near Blowout can run back a long way.
Near the Blanco County line
Blanco County borders Burnet County, Comal County, Gillespie County, Hays County, and Kendall County, and each keeps its own parcel map and records. Every map bordering Blanco County is listed on our Texas directory.
Current owners without a printed book
The Blanco CAD interactive map works as a living Blanco County plat book, with owner names and parcel lines over aerial photos of Blanco County. Print a screenshot of the tracts around Blowout if you want a paper copy in the truck.
Blanco County plat book questions
Does a Blanco County plat book show property lines?
Only roughly; a Blanco County plat book is a reference, so a licensed survey decides the real line.
Should I use the Blanco County, Texas parcel map instead of a plat book?
For current owners near Round Mountain, yes; the Blanco CAD interactive map updates as deeds are processed.
What is the difference between a plat book and a plat in Blanco County?
No; a lot in Blowout answers to its recorded plat, and the county atlas is just a reference.
Can I buy a new plat book for Blanco County, Texas?
It depends on if a publisher has a county edition in print; local offices in Blowout usually know.
Are older plat books for Blanco County, Texas online?
Check the library in Blowout, local historical groups and estate sales for older Blanco County editions.
Open the official Blanco County, TX parcel map Blanco 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.