Washington · FIPS 53031 · County seat: Port Townsend
Jefferson County, WA GIS & Parcel Viewer
Use this page to reach the official county parcel map for Jefferson County, Washington. The button below opens the Jefferson 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 Jefferson County parcel map ↗
Opens gisweb.jeffcowa.us in a new tab. We link out and never embed or copy parcel data.
Quick facts
| Official map | Jefferson County parcel map |
|---|---|
| Type | County-run map |
| Website | gisweb.jeffcowa.us |
| Access | Free, no login (checked Oct 2026) |
| County seat | Port Townsend |
| Population | 33,714 (2023 Census Bureau estimate) |
| Land area | 1,804 sq mi |
| FIPS code | 53031 |
Who runs this map
It is a county-level map: Jefferson County or the company it hires keeps the parcel layer up to date. Our October 2026 check found the map open to the public, with no account or payment needed.
How to use the Jefferson County viewer
- Open the official link in a new tab.
- Accept any disclaimer, then look for a search box that takes street addresses, owners or parcel IDs.
- Zoom in and click a parcel to see its details.
- Use the map's layer controls to add aerials or other layers if they're offered.
Rural addresses don't always geocode well. When that happens, zoom in by hand and click the parcel, or search by owner name.
The county in brief
The U.S. Census Bureau estimated Jefferson County's population at 33,714 in 2023, spread over about 1,804 square miles of land, or roughly 19 people per square mile. By population it ranks 27th of 39 counties in Washington. Census maps also count about 384 square miles of water inside its boundary. Its county seat is Port Townsend.
Nearby parcel maps
Parcels close to the edge of Jefferson County can fall in the next county over. Neighboring counties:
More on Jefferson County parcel maps
Maps vs. surveys
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.