California · FIPS 06105 · County seat: Weaverville
Trinity County, CA GIS & Parcel Viewer
Looking for lot lines or a parcel number in Trinity County, CA? The quickest route is Trinity County Parcel Viewer, 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 Trinity County parcel map ↗
Opens experience.arcgis.com in a new tab. We link out and never embed or copy parcel data.
Trinity County at a glance
| Official map | Trinity County Parcel Viewer |
|---|---|
| Type | County-run map |
| Website | experience.arcgis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Weaverville |
| Population | 15,670 (2023 Census Bureau estimate) |
| Land area | 3,179 sq mi |
| FIPS code | 06105 |
Where the parcel data comes from
This map is published by or for Trinity County itself, so it reflects the local parcel layer rather than a third-party copy. As of our October 2026 test, anyone could open it without signing in or paying.
Searching for a parcel, step by step
- Press the button above; an ArcGIS Experience Builder app opens in a new tab. Accept any splash or disclaimer screen.
- Search by address or parcel ID, or pan to the area.
- Select a parcel to view the information the publisher makes available.
- Explore the app's panels for layers, legends or printing.
If an address search comes up empty, try the parcel number from a tax bill or deed instead, or click the lot on the map.
The county in brief
Trinity County had an estimated 15,670 residents in 2023, according to the Census Bureau. With about 3,179 square miles of land, that works out to roughly 4.9 people per square mile. That makes it number 54 out of 58 California counties by population. Its county seat is Weaverville.
Nearby parcel maps
If the property sits near a county line, the parcel may belong to a neighbor. These counties border Trinity County:
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.