San Juan County GIS Maps
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San Juan County, Washington, has 17,788 residents across 17,399 parcels and covers 173.9 square miles. The population grew 12.8% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for San Juan County is 53055.
Friday Harbor is the county's largest population center. San Juan County also includes 9 zip codes, 4 public school districts and 3 municipalities. Those boundaries help explain why population, schools, and housing can look different from one part of the county to another. The map below shows how those county lines, zip codes, and school districts fit together, and the sections that follow use that same geography to show parcel data, population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers, Parcels and sample data. Paid packages add full layers, analytics and database files.
San Juan County Trends
- Population
- 17,788▴
- Median Home Value
- $726,500▴
- K-12 Enrollment
- 1,817▴
County analytics dashboards with historical trends & projections included in package downloads.
Free starter access previews county maps, lightweight GIS, and sample data. Paid packages unlock full GIS layers, analytics, and database files.
San Juan County Maps
The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.
County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.
San Juan County Parcels
San Juan County has 17,399 mapped parcels covering 111,711 acres. The median assessed value is $675,010. Site addresses reach 65.8%. Assessed values reach 93.8%. Browse the interactive San Juan County Parcel viewer here.
San Juan County Parcel Data Coverage
| Field | Parcels | Coverage |
|---|---|---|
| Parcel ID | 17,399 | 100% |
| Owner name | 0 | 0% |
| Owner mailing address | 0 | 0% |
| Site address | 11,450 | 65.8% |
| Land use code | 17,395 | 99.9% |
| Land use description | 0 | 0% |
| Assessed value | 16,328 | 93.8% |
| Land value | 17,393 | 99.9% |
| Improvement value | 17,393 | 99.9% |
| Acreage | 0 | 0% |
| Parcel boundary | 17,399 | 100% |
| Download all San Juan County parcels. | ||
Field coverage measured across all San Juan County parcel records.
San Juan County Population
San Juan County had 17,788 residents in 2020. That was 12.8% higher than in 2010. San Juan County added 3,711 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 102 people per square mile. Some of the county's most populated postal areas include Friday Harbor, Eastsound and Lopez Island.
Population Trend in San Juan County WA
San Juan County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
San Juan County Zip Codes
San Juan County has 9 zip codes. Some of the county's most populated zip codes include Friday Harbor (98250), Eastsound (98245) and Lopez Island (98261). Friday Harbor is the largest zip by population, with about 8,632 residents or 49% of the county total. Together, the three largest zips account for about 89% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in San Juan County WA
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 98250 | Friday Harbor | 8,632 | ▴ 12.6% |
| 98245 | Eastsound | 4,372 | ▴ 19.7% |
| 98261 | Lopez Island | 2,752 | ▴ 15.5% |
| 98279 | Eastsound | 651 | ▴ 7.1% |
| 98280 | Orcas | 474 | ▾ -1.3% |
| Download all zip code data | |||
San Juan County Zip Code populations and trends per most recent census data.
San Juan County Demographics
San Juan County has a median age of 56.7, which makes the county a little older than Washington overall. About 12.8% of residents are under 18, while 35% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 65 and over at about 35% of the population, which points to an older population profile. About 53.4% of adults have a bachelor's degree or higher, above the statewide figure of 38.8%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.
Key Demographics for San Juan County WA
Median Age
56.7
Under 18
12.8%
Age 65+
35%
Bachelor's+
53.4%
San Juan County School Districts
San Juan County is served by 4 public school districts with 1,817 students enrolled in 2024. The largest districts on the county map are Orcas Island, San Juan Island and Lopez. Those three districts account for about 100% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, based on district totals from 2017 to 2024.
Largest School Districts by Enrollment in San Juan County WA
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Orcas Island School District | 807 | 44.4% | ▴ 5.2% |
| San Juan Island School District | 797 | 43.9% | ▾ -0.6% |
| Lopez School District | 205 | 11.3% | ▾ -6.4% |
| Shaw Island School District | 8 | 0.4% | ▾ -20% |
| Download all school district data | |||
San Juan County school district enrollment and trends per most recent NCES reporting data.
San Juan County Housing & Real Estate
San Juan County has a median home value of $726,500 and a median gross rent of $1,413. About 78% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run above the Washington median, while rents come in below the state average. In March 2026, the median listing price was $1,209,500 and homes spent about 102 days on the market.
San Juan County Housing Mix
San Juan County housing mix: owner, renter and vacant units.
San Juan County Housing Trends
San Juan County median home value and rent trend (last 5 years).
Businesses in San Juan County, WA
San Juan County has 1,478 business listings across 372 categories. The largest categories in San Juan County business listings are Parks & Recreation (40, 2.7%), Farm (35, 2.4%), and Bed And Breakfast (34, 2.3%). The full San Juan County business listings dataset includes names, categories, addresses and contact details where available. San Juan County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in San Juan County, WA
| Category | Businesses | Share |
|---|---|---|
| Parks & Recreation | 40 | 2.7% |
| Farm | 35 | 2.4% |
| Bed And Breakfast | 34 | 2.3% |
| Art Gallery | 28 | 1.9% |
| Community & Nonprofits | 27 | 1.8% |
| Hotels | 26 | 1.8% |
| Churches & Religious Organizations | 24 | 1.6% |
| Restaurants | 24 | 1.6% |
| Contractors | 23 | 1.6% |
| Skate Park | 22 | 1.5% |
San Juan County Business Listings
| Business | Category | City |
|---|---|---|
| Rosario Resort and Spa | Accommodation | Eastsound |
| Avid Accounting | Accountant | Eastsound |
| Rosario Marina | Active Life | Eastsound |
| Laughing Tiger Acupuncture | Acupuncture | Lopez Island |
| Seagate Farm | Agricultural Cooperatives | Friday Harbor |
| Pendragon Orchard and Vine | Agricultural Service | Eastsound |
| San Juan Air Maintenance | Aircraft Repair | Friday Harbor |
| Kenmore Air - Orcas Island | Airline | Eastsound |
| Orcas Island Airport | Airport | Eastsound |
| Island Airporter | Airport Shuttles | Friday Harbor |
| Download San Juan County business listings | ||
San Juan County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
San Juan County Basemaps
San Juan County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.
Get the Full San Juan County Data Package
This page shows a preview of what's included in the San Juan County data package. The full package gives you a ready-to-use county data system with GIS layers, historical data, maps, database files and planning tools that save hours of manual data gathering, cleanup and joins. Everything is organized to help you skip data wrangling and start analysis faster.
- 20+ GIS layers for parcels, zip codes, school districts, roads, water, boundaries and more
- Historical county demographics, housing, income and trend data
- ZIP code population files and school district enrollment history
- Database files, markdowns, AI-ready prompts and documentation
- Map exports in PNG, JPEG, PDF, SVG and GeoTIFF formats
- Offline-ready data explorer, map and analytics tools
Paid packages support commercial use, client work, and derived outputs. Some package contents may include source-specific attribution or provider notices. See Licensing & Data Source Notices.
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