San Luis Obispo County GIS Maps
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San Luis Obispo County, California, has 282,424 residents and covers 3,300.6 square miles. The population grew 4.7% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for San Luis Obispo County is 06079.
San Luis Obispo is the county's largest population center. San Luis Obispo County also includes 23 zip codes, 8 public school districts and 12 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 population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers and sample data. Paid packages add full layers, analytics and database files.
San Luis Obispo County Trends
- Population
- 282,424▴
- Median Home Value
- $777,200▴
- K-12 Enrollment
- 30,998▴
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 Luis Obispo 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 Luis Obispo County Population
San Luis Obispo County had 282,424 residents in 2020. That was 4.7% higher than in 2010. San Luis Obispo County added 35,743 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 86 people per square mile. Some of the county's most populated postal areas include Paso Robles, Atascadero and Arroyo Grande.
Population Trend in San Luis Obispo County CA
San Luis Obispo County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
San Luis Obispo County Zip Codes
San Luis Obispo County has 23 zip codes. Some of the county's most populated zip codes include Paso Robles (93446), Atascadero (93422) and Arroyo Grande (93420). Paso Robles is the largest zip by population, with about 45,979 residents or 16% of the county total. Together, the three largest zips account for about 39% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in San Luis Obispo County CA
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 93446 | Paso Robles | 45,979 | ▴ 5.2% |
| 93422 | Atascadero | 33,041 | ▴ 5.3% |
| 93420 | Arroyo Grande | 30,540 | ▴ 7.5% |
| 93401 | San Luis Obispo | 29,877 | ▴ 6.6% |
| 93405 | San Luis Obispo | 23,331 | ▾ -34.2% |
| Download all zip code data | |||
San Luis Obispo County Zip Code populations and trends per most recent census data.
San Luis Obispo County Demographics
San Luis Obispo County has a median age of 40.2, which makes the county a little older than California overall. About 17.6% of residents are under 18, while 21.6% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 25 to 44 at about 27.9% of the population, which points to a solid working-age base. About 39.2% of adults have a bachelor's degree or higher, above the statewide figure of 36.5%. The county has a more diverse population mix, with no single race or ethnicity accounting for all of the local story.
Key Demographics for San Luis Obispo County CA
Median Age
40.2
Under 18
17.6%
Age 65+
21.6%
Bachelor's+
39.2%
San Luis Obispo County School Districts
San Luis Obispo County is served by 8 public school districts with 30,998 students enrolled in 2024. The largest districts on the county map are Lucia Mar Unified, San Luis Coastal Unified and Paso Robles Joint Unified. Those three districts account for about 76% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, but it is slightly lower than it was in 2017.
Largest School Districts by Enrollment in San Luis Obispo County CA
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Lucia Mar Unified School District | 9,590 | 30.9% | ▾ -0.3% |
| San Luis Coastal Unified School District | 7,653 | 24.7% | ▴ 1% |
| Paso Robles Joint Unified School District | 6,283 | 20.3% | ▴ 0.5% |
| Atascadero Unified School District | 4,355 | 14% | ▴ 0.4% |
| Templeton Unified School District | 2,214 | 7.1% | ▾ -1% |
| Download all school district data | |||
San Luis Obispo County school district enrollment and trends per most recent NCES reporting data.
San Luis Obispo County Housing & Real Estate
San Luis Obispo County has a median home value of $777,200 and a median gross rent of $1,899. About 62% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run above the California median, while rents come in below the state average. In March 2026, the median listing price was $1,091,248 and homes spent about 54 days on the market.
San Luis Obispo County Housing Mix
San Luis Obispo County housing mix: owner, renter and vacant units.
San Luis Obispo County Housing Trends
San Luis Obispo County median home value and rent trend (last 5 years).
Businesses in San Luis Obispo County, CA
San Luis Obispo County has 14,720 business listings across 958 categories. The largest categories in San Luis Obispo County business listings are Winery (536, 3.6%), Real Estate Agents (330, 2.2%), and Churches & Religious Organizations (214, 1.5%). The full San Luis Obispo County business listings dataset includes names, categories, addresses and contact details where available. San Luis Obispo 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 Luis Obispo County, CA
| Category | Businesses | Share |
|---|---|---|
| Winery | 536 | 3.6% |
| Real Estate Agents | 330 | 2.2% |
| Churches & Religious Organizations | 214 | 1.5% |
| Hotels | 192 | 1.3% |
| Parks & Recreation | 188 | 1.3% |
| Auto Repair | 182 | 1.2% |
| Restaurants | 154 | 1.0% |
| Hair Salons | 146 | 1.0% |
| Coffee Shops | 145 | 1.0% |
| Mexican Restaurants | 145 | 1.0% |
San Luis Obispo County Business Listings
| Business | Category | City |
|---|---|---|
| Avila Heights Recovery | Abuse And Addiction Treatment | San Luis Obispo |
| Cal Poly University Store | Academic Bookstore | San Luis Obispo |
| HarborWalk Plaza | Accommodation | Morro Bay |
| Burkart & Stevens CPAs and Advisors | Accountant | San Luis Obispo |
| Black Hill Trail Morro Bay State | Active Life | Morro Bay |
| Branches of Wellness Acupuncture | Acupuncture | San Luis Obispo |
| Lifestyle Recovery Center | Addiction Rehabilitation Center | Paso Robles |
| Adult School Adult School | Adult Education | San Luis Obispo |
| Diamond Adult World | Adult Entertainment | Atascadero |
| Outdoor Cover Warehouse | Adventure Sports Center | Nipomo |
| Download San Luis Obispo County business listings | ||
San Luis Obispo County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
San Luis Obispo County Basemaps
San Luis Obispo 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 Luis Obispo County Data Package
This page shows a preview of what's included in the San Luis Obispo 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 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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Nearby Counties
Browse county data pages for the counties that border San Luis Obispo County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.