Blog · October 14, 2026 · South Dakota
Davison County Plat Book, South Dakota: what to know
With a lot near Loomis, plat books show ownership by township; the parcel viewer shows it today.
Main page: Davison County, SD GIS & Parcel Viewer (official map link, county facts and neighboring maps).
Platbookmapper is an Amazon Associate. If you buy through an Amazon link on this page, we earn a commission. The link is a product, not the county map.
Looking for a Davison County plat book? These atlases map who owns rural land, page by page, useful for farms near Mount Vernon. In this Davison County guide: how the atlas is organized, where to find editions, and how the county viewer fills the gaps.
Tracking down a Davison County plat book
For a tract near Ethan, plat books are commercial atlases, with owner names on each tract, usually township by township.
The free map to start with
Go first to the District III regional GIS map; it maps every assessed parcel from Ethan to Loomis. If you only know roughly where the land is, pan along the nearest road and select the outline, whether the land is near Ethan or elsewhere in the county. If the land is near Loomis, copy the parcel ID before closing the panel; each clerk in the county asks for it first.
How land is described here
South Dakota uses the Public Land Survey System, so rural legal descriptions near Ethan cite section, township and range. A standard section is about one square mile, roughly 640 acres, with 36 sections to a township, though sections near James River can be irregular. Keep the legal description for land near James River when you talk to a surveyor.
Who uses plat books
Farmers, hunters and appraisers near Loomis use plat books to see ownership across many tracts at once.
Buying or borrowing a copy
Libraries near Mount Vernon sometimes keep past atlases, useful for family or title research.
Backing up the map with records
On ground around Mount Vernon, the map is an index, not the title: recorded deeds, subdivision plats and easements for parcels in the county are filed with the Register of Deeds. Long-held tracts near James River can go back through many deeds, so a title company is worth hiring on a real sale.
Land on the county line
Davison County touches Aurora County, Douglas County, Hanson County, Hutchinson County, and Sanborn County; every one of them runs a separate parcel map. Acreage along the edge near Ethan can show up in two county records, so look at the neighboring map as well. Out toward Mount Vernon, the Platbookmapper state page links each neighboring county map across South Dakota.
The free online alternative
For current names, use the District III regional GIS map, across the county, which applies near Ethan as much as anywhere.
Printing your own
Screenshot each section of the viewer around Loomis and keep them in a binder for the truck.
Plat book vs. recorded plat
Don't confuse the atlas with a recorded subdivision plat: recorded plats near Mitchell are filed with the Register of Deeds, while the atlas is a reference.
Who handles what
If the acreage or value on a parcel near Mitchell looks off go to the Director of Equalization, since that office keeps the assessment data. Questions about what you can build around Loomis go to planning, building or health offices, town or county, depending on location.
What the map can't tell you
Out toward Mount Vernon, listed acreage is an estimate; just a licensed surveyor can set the real boundary on the ground. Records update in batches, so a fresh transfer around Mitchell might lag behind.
Using it on a phone
The parcel map usually runs in a mobile browser, handy when you're parked on a road near Mount Vernon, so load it before you lose signal. A printout of the tract near Mount Vernon is a good backup.
Davison County in a few facts
Mitchell holds the county offices, home to the main records offices. Other places on the map include Mount Vernon, Ethan, Loomis, and James River, where town lots give way to larger tracts. About 19,922 people live in Davison County (Census estimate, 2023) spread over about 436 square miles. Landmarks such as James River are easy to spot when you zoom out.
Frequently asked
Is there a current Davison County plat book?
For property near Ethan, editions come and go; online parcel maps fill the gaps.
Are old plat books online near Loomis?
For property near Ethan, some older atlases have been digitized.
Is a plat book legal proof around Loomis?
For a home near James River, recorded plats are legal documents at the Register of Deeds, and plat books are references.
Should I use the District III regional GIS map instead near Mount Vernon?
For property near Ethan, the District III regional GIS map is free and updated more often.
Is the parcel map a survey around Mount Vernon?
On ground around Mitchell, parcel lines are tax drawings, not surveys, so a fence may sit off the line
Open the official Davison County, SD 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.