Missouri · FIPS 29127 · County seat: Palmyra
Marion County, MO GIS & Parcel Viewer
Use this page to reach the official county parcel map for Marion County, Missouri. The button below opens CAMAvision Maps for Marion County in a new tab, so you can look up parcels by address, owner or parcel number on the source site itself.
Open the Marion County parcel map ↗
Opens maps.camavision.com in a new tab. We link out and never embed or copy parcel data.
Marion County at a glance
| Official map | CAMAvision Maps for Marion County |
|---|---|
| Type | County-run map |
| Website | maps.camavision.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Palmyra |
| Population | 28,336 (2023 Census Bureau estimate) |
| Land area | 437 sq mi |
| FIPS code | 29127 |
Who runs this map
Marion County runs this viewer (directly or through a contracted vendor), which makes it the closest thing to the source for local parcel lines. Our October 2026 check found the map open to the public, with no account or payment needed.
Finding a property on this map
- Press the button above. This county's viewer runs on CAMAvision Maps; 42 counties in our directory use the same service.
- Find the search option and look up a property, or zoom in on the map.
- Click a lot to see its details.
- Check the toolbar for layers, measuring and printing.
Have a tax bill handy? The parcel or account number on it is usually the fastest way to search.
About Marion County
Marion County had an estimated 28,336 residents in 2023, according to the Census Bureau. With about 437 square miles of land, that works out to roughly 65 people per square mile. Among Missouri's 115 counties, it is the 39th largest by population. The county seat is Palmyra.
Nearby parcel maps
Marion County shares a border with the counties below. Each link has its own official map:
A note on accuracy
Online parcel lines are drawn for tax and planning use. They can be off by several feet, so use a recorded plat or a licensed surveyor for fences, setbacks or a sale.