Idaho · FIPS 16037 · County seat: Challis
Custer County, ID GIS & Parcel Viewer
Here is the direct link to the statewide parcel map covering Custer County, ID: Idaho statewide Parcels layer (ArcGIS Map Viewer). Below you'll find basic facts about the county, steps for using the viewer, and nearby counties.
Open the Custer County statewide map ↗
Opens arcgis.com in a new tab. We link out and never embed or copy parcel data.
Custer County at a glance
| Official map | Idaho statewide Parcels layer (ArcGIS Map Viewer) |
|---|---|
| Type | Statewide map (covers all of Idaho) |
| Website | arcgis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Challis |
| Population | 4,523 (2023 Census Bureau estimate) |
| Land area | 4,922 sq mi |
| FIPS code | 16037 |
Who runs this map
The link goes to a statewide map (Idaho statewide Parcels layer (ArcGIS Map Viewer)). It shows parcels for Custer County along with the rest of Idaho. A statewide layer can trail the county's own books by weeks or months, so treat it as a fast first look rather than the final word. Our October 2026 check found the map open to the public, with no account or payment needed.
How to use the Custer County viewer
- Open the statewide map with the button above.
- Search for an address in Custer County, or zoom to the county on the map.
- Click a parcel to see the attributes the state layer includes.
- Write down the parcel number and use it for records searches with the Custer County assessor or recorder.
Rural addresses don't always geocode well. When that happens, zoom in by hand and click the parcel, or search by owner name.
Custer County by the numbers
Custer County had an estimated 4,523 residents in 2023, according to the Census Bureau. With about 4,922 square miles of land, that works out to roughly 0.9 people per square mile. Among Idaho's 44 counties, it is the 40th largest by population. Its county seat is Challis.
Nearby parcel maps
Custer County shares a border with the counties below. Each link has its own official map:
Maps vs. surveys
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.