Mississippi · FIPS 28145 · County seat: New Albany
Union County, MS GIS & Parcel Viewer
Looking for lot lines or a parcel number in Union County, MS? The quickest route is Union Parcel App, the county parcel map we keep on file for this county. We link straight to it and add a few tips for getting around.
Open the Union County parcel map ↗
Opens unionms.maps.arcgis.com in a new tab. We link out and never embed or copy parcel data.
Union County at a glance
| Official map | Union Parcel App |
|---|---|
| Type | County-run map |
| Website | unionms.maps.arcgis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | New Albany |
| Population | 28,284 (2023 Census Bureau estimate) |
| Land area | 416 sq mi |
| FIPS code | 28145 |
Who runs this map
Union 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.
How to use the Union County viewer
- Click the button above and wait for the Web AppBuilder viewer to load. Some counties show a terms screen first.
- Search by street address, owner or parcel ID if the search box offers those options.
- Click a lot on the map to read its attributes.
- Turn on aerial imagery from the basemap tool and use the layer list to add things like zoning or flood zones when they're published.
Many parcel sites expect owner names last name first. If a full name finds nothing, try just the surname.
About Union County
Union County had an estimated 28,284 residents in 2023, according to the Census Bureau. With about 416 square miles of land, that works out to roughly 68 people per square mile. Among Mississippi's 82 counties, it is the 29th largest by population. New Albany serves as the county seat.
Nearby parcel maps
Union County shares a border with the counties below. Each link has its own official map:
A note on accuracy
Keep in mind that a GIS parcel layer is a tax map, not a survey. For exact boundaries, look at the recorded deed and plat or hire a licensed land surveyor.