Blog · October 14, 2026 · Illinois
The Rock Island County Plat Book and the online parcel map
On ground around Silvis, plat books show ownership by township; the parcel viewer shows it today.
Main page: Rock Island County, IL GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Want a copy of the Rock Island County plat book? These atlases map who owns rural land, page by page, and it's handy for land around Coyne Center. Covered here for Rock Island County: how the atlas is organized, where to look for printed copies, and how the county viewer fills the gaps.
Tracking down a Rock Island County plat book
Closer to Moline, a plat book is a privately published atlas, with owner names on each tract, page by page across the county.
The free map to start with
Go first to the Rock Island County parcel viewer; it covers each assessed parcel from Silvis to Carbon Cliff. Without an address in hand, pan along Interstate 74 and click the parcel itself. Closer to Buffalo Prairie, write down the parcel ID from that panel; every records desk in the county will want it.
Where the recorded documents are
For anything that matters, get the recorded deed through the county Recorder of Deeds (in many counties the County Clerk and Recorder); the parcel map near East Moline only summarizes it. In and around Buffalo Prairie, have ready the book and page shown in the record panel and the lookup takes minutes.
Reading the legal description
Illinois follows the Public Land Survey System, so deeds around Upper Mississippi River National Wildlife and Fish Refuge reference sections and townships. Each section is nominally a mile square, about 640 acres, with 36 sections to a township, though sections near Edgington can be irregular. Write down the legal description for the tract near Barstow before you request a deed or survey.
Buying or borrowing a copy
Not every county has a current edition, try the county extension office, recorder's office or library near Upper Mississippi River National Wildlife and Fish Refuge.
Land on the county line
Rock Island County borders Henry County, Mercer County, Whiteside County, Clinton County, IA, and Louisa County, IA; every one of them runs a separate parcel map. A tract near the line by Buffalo Prairie may be split across two assessors' files, so open the adjacent map too. If you're looking near Moline, our state page links each bordering county map for Illinois.
Getting your bearings
Rock Island holds the county offices, where most land records are kept. You'll also find East Moline, Moline, Silvis, and Andalusia, where town lots give way to larger tracts. Roughly 141,236 people live in Rock Island County (Census Bureau estimate, 2023) on roughly 427 square miles. The county was formed in 1831, and some chains of title near Carbon Cliff are long. Features like Upper Mississippi River National Wildlife and Fish Refuge make handy reference points on the map.
A word on accuracy
If you're looking near Barstow, acreage on the record is an estimate; only a licensed surveyor establishes the real lines on the ground. If the land is near Upper Mississippi River National Wildlife and Fish Refuge, owner names and values update on a schedule, so a deed recorded last month might lag behind.
Using the parcel viewer instead
The Rock Island County parcel viewer is updated more often than any atlas, for tracts near Moline.
Which office to call
For assessment questions about property around Edgington go to the Supervisor of Assessments, working with township assessors, which maintains the tax roll. Zoning, permits and septic questions near Campbell's Island go to planning, building or health offices, depending on whether the land is inside town limits.
Who uses plat books
Buyers and seed dealers around Campbell's Island rely on them for a big-picture view of who owns what.
Taking the map into the field
Most viewers work in a phone browser, handy when you're parked on a road near Edgington, so load it before you lose signal. A printout of the tract near Moline helps when you meet an owner or agent.
Two kinds of plat
With a lot near Carbon Cliff, don't confuse the atlas with a recorded subdivision plat: the recorded plat at the county Recorder of Deeds (in many counties the County Clerk and Recorder) is a legal document, while the atlas is a reference.
A homemade atlas
Screenshot each section of the viewer around Edgington and keep them in a binder for the truck.
Quick answers
Plat book or parcel viewer around Coyne Center?
It depends, but the Rock Island County parcel viewer is free and updated more often.
Are old plat books online near Coyne Center?
Good question; state archives near Andalusia may have copies; call ahead.
Is a plat book the same as a recorded plat for land near Coal Valley?
For land near Silvis, recorded plats are legal documents at the county Recorder of Deeds (in many counties the County Clerk and Recorder), and plat books are references; use a surveyor for lines.
Where can I buy a plat book for land near Silvis?
If you're looking near Coal Valley, it depends on whether a publisher has a current edition.
What's the tax parcel number used for around Buffalo Prairie?
It's the number the Supervisor of Assessments, working with township assessors uses to track a tract near Barstow; you'll see it in the viewer and on tax statements.
Open the official Rock Island County, IL 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.