Washington County
Parcel & Property Data
About This Data
LandBrief holds 12,665 parcel records for Washington County, sourced from county records. Each includes the parcel boundary, and — where the county publishes them — owner, situs address, acreage, assessed values and legal description.
Data from the Washington County assessor roll dated April 2026, loaded August 2026. See data sources for every county’s vintage.
Explore Washington County
Washington County by the Numbers
- Median parcel size
- 0.56 acres
measured from mapped boundaries - 90th-percentile parcel
- 11 acres
- County land area
- 210,738 acres
U.S. Census measurement - Communities
- 17
77.3% of parcels outside any incorporated place
Who Owns Washington County?
Share of the county’s 12,665 parcels by the kind of owner on record. Classified from owner names, so the boundaries are approximate; an entity the rules cannot place counts as an individual.
| Owner type | Share of parcels |
|---|---|
| Individuals | 15.8% |
| Companies & organizations | 4.5% |
| Trusts & estates | 2.8% |
| Government | 1.0% |
| Other / unclassified | 75.9% |
The largest owner on record is WESTERLY TOWN OF with 94 parcels — see the full landowner leaderboard.
Parcel Records (~12,665 total)
| Parcel ID | Owner | Address | City | Acreage |
|---|---|---|---|---|
| WY 63-21 | WOODY HILL MANAGEMENT AREA | — | Unincorporated | 728.24 |
| EX 20-5-10 | — | — | Unincorporated | 714.73 |
| RI 04E-001-000 | — | — | Unincorporated | 530.45 |
| HO 021-000-00002 | STATE OF RHODE ISLAND | — | Unincorporated | 497.28 |
| EX 28-2-1 | — | — | Unincorporated | 457.20 |
| EX 53-1-5 | — | — | Unincorporated | 456.38 |
| SK 95-2:WATER | — | — | Charlestown | 419.85 |
| HO 016-000-00027 | R I BOY SCOUTS | 61 A CAMP YAWGOOG RD | Unincorporated | 395.93 |
| CH 07-45 | UNITED STATES OF AMERICA {DOI} | — | Unincorporated | 387.46 |
| HO 020-000-00024 | STATE OF RHODE ISLAND | — | Unincorporated | 379.11 |
Download Washington County parcel data
All 12,665 parcels in Washington County as a single file — free, no account needed. Shapefile, GeoJSON, GeoPackage, CSV and Parquet.
Get Washington County on FreeParcelData →Nearby counties
Frequently Asked Questions
How many parcels are in Washington County?
The Washington County assessor roll on file records 12,665 parcels across 17 communities, with 77.3% lying outside any incorporated place.
Who owns the most land in Washington County?
WESTERLY TOWN OF holds 94 parcels, the most of any owner on record — the largest-landowners leaderboard ranks the top 25.
What is the typical parcel size in Washington County?
Measured from mapped boundaries, the median parcel is 0.56 acres, and nine parcels in ten are under 11 acres. Boundary-measured area closely tracks deeded acreage but is not the deed.
How much of Washington County is government-owned?
Government entities — federal, state, and local — hold 1.0% of the county’s parcels, classified from owner names on the roll.
How current is this data?
It comes from the Washington County assessor roll dated April 2026. Counties deliver on their own schedules; the methodology page explains how records are processed and the data sources page tracks every county’s vintage.
Browse by City (17)
12,665 parcels across 17 communities in Washington County.
- Ashaway75 parcels
- Bradford55 parcels
- Carolina37 parcels
- Charlestown516 parcels
- Hope Valley139 parcels
- Hopkinton58 parcels
- Kingston106 parcels
- Misquamicut102 parcels
- Narragansett Pier288 parcels
- Quonochontaug165 parcels
- Unincorporated9,792 parcels
- Wakefield-Peace Dale307 parcels
- Warwick1 parcels
- Watch Hill40 parcels
- Weekapaug81 parcels
- Westerly873 parcels
- Wyoming30 parcels