California · FIPS 06041 · County seat: San Rafael
Marin County, CA GIS & Parcel Viewer
Use this page to reach the official county parcel map for Marin County, California. The button below opens the Marin County parcel map in a new tab, so you can look up parcels by address, owner or parcel number on the source site itself.
Open the Marin County parcel map ↗
Opens marinmap.org in a new tab. We link out and never embed or copy parcel data.
Map and county facts
| Official map | Marin County parcel map |
|---|---|
| Type | County-run map |
| Website | marinmap.org |
| Access | Free, no login (checked Oct 2026) |
| County seat | San Rafael |
| Population | 254,407 (2023 Census Bureau estimate) |
| Land area | 520 sq mi |
| FIPS code | 06041 |
Who runs this map
This map is published by or for Marin 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.
Finding a property on this map
- Press the button above to open the county's own web map.
- Search for the property or pan and zoom to it.
- Click the lot to bring up what the county publishes about it.
- Look for print or measure tools if you need a quick map or rough size.
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
Census Bureau figures put Marin County at about 254,407 people (2023 estimate) on roughly 520 square miles of land, which is about 489 residents per square mile. Among California's 58 counties, it is the 26th largest by population. Another 308 square miles of water fall within its lines, according to Census mapping. San Rafael serves as the county seat.
Counties next to Marin County
Marin 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.