Blog · October 14, 2026 · Oregon
Gilliam County Plat Book (Oregon)
Township atlases, old editions and current owners in Gilliam County, starting near Lonerock.
Main page: Gilliam County, OR GIS & Parcel Viewer (official map link, Gilliam County facts and neighboring maps).
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Looking for a Gilliam County plat book? Plenty of people around Arlington still want a paper atlas with owner names on every section. Here's what a plat book is, where to look for one in Gilliam County, and the free official map that stays current between editions.
What a Gilliam County plat book is
Think of the Gilliam County plat book as a bound, printed version of ownership: township pages, owner names on each tract, and road maps for places like Arlington. Don't confuse it with a subdivision plat on file for lots in Arlington; that recorded plat is a legal document, while the atlas is a reference.
Opening the Gilliam County parcel viewer
Gilliam County parcels are viewed through a statewide map, the ORMAP statewide tax lot viewer; zoom toward Condon to reach them. Zoom to Gilliam County, click a tax lot near Condon, and copy the map and tax lot number for the assessment search. For a backup route to the map covering Lonerock, our Gilliam County directory entry keeps the link current.
Current and older editions
Try the library in Condon or a local historical society for older Gilliam County editions; libraries sometimes keep past atlases for reference. Older editions are useful for family history around Arlington, showing who held a farm decades ago.
Atlas details and limits
Many atlases add rural residence listings and road maps, handy on back roads near Clem. Small parcels and town lots in Arlington are often too small to label on an atlas page, which is another reason the online map is better for them. If you use a plat book for hunting permission near Arlington, recheck the titleholder on the county map first.
Making your own atlas of Gilliam County
Farm families near Lonerock often keep successive editions of the Gilliam County plat book, which together show how ownership shifted over decades. Some buyers print the county parcel map at township scale to carry on back roads near Condon.
The Gilliam County economy in brief
Gilliam County's 2022 business count was 67 establishments, with retail trade, health care and social assistance, and other services the largest groups. Compared with national shares, Gilliam County leans toward utilities, which shapes demand for land near Lonerock.
Towns and land across Gilliam County
Condon is the county seat, and Arlington and Lonerock are among the other towns on the county map. Smaller places such as Clem, Gwendolen, and Mayville appear on the county map as little clusters of lots. Gilliam County had an estimated 2,026 people in 2023 (Census Bureau), spread across about 1,205 square miles. Beyond the town lots in Condon, expect big rural parcels across the county. The Cascade Range and Blue Mountains give parts of Gilliam County parcel shapes that follow the terrain.
Tracts that cross the Gilliam County line
Near the edge of the county, check the next map over: Morrow County, Sherman County, Wasco County, Wheeler County, and Klickitat County, WA all border it. Every map bordering Gilliam County is listed on our Oregon directory.
Where Gilliam County land records are kept
The parcel layer for Gilliam County points back to recorded deeds and plats, kept by the county's recording office (its title varies by state). A deed book and page or instrument number on the county record is the quickest route to order the document for a lot in Condon.
The free online alternative
Between editions, use the ORMAP statewide tax lot viewer; it displays owners, acreage and parcel IDs for land near Arlington at no cost. Print a screenshot of the tracts around Condon if you want a paper copy in the truck.
Gilliam County plat book questions
Are older plat books for Gilliam County, Oregon online?
Check the library in Arlington, local historical groups and estate sales for older Gilliam County editions.
Is there a current plat book for Gilliam County, Oregon?
It depends on if a publisher has a county edition in print; local offices in Arlington typically know.
Is a plat book the same as a recorded plat for a lot in Arlington?
No; a lot in Arlington answers to its recorded plat, and the county atlas is just a reference.
Can I use a plat book to locate lot lines near Arlington?
It displays rough ownership blocks; for lines near Arlington, use recorded plats and surveys.
Should I use the Gilliam County, Oregon parcel map instead of a plat book?
For current owners near Condon, yes; the ORMAP statewide tax lot viewer updates as deeds are processed.
Open the official Gilliam County, OR parcel map Gilliam 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.