About San Luis Obispo County
San Luis Obispo County is a city located in United States, in the California region. According to the latest available data (2026), the population of San Luis Obispo County is approximately 282,424 residents, making it the #275 most populous city in United States.
Globally, San Luis Obispo County ranks #6,539 among the world's most populated cities.
San Luis Obispo County City Statistics
| City | San Luis Obispo County |
| Country |  United States |
| Population | 282,424 |
| Global Rank | #6,539 |
| Rank in United States | #275 of 867 cities |
| City Category | city |
| Region | California |
| Latitude | 35.38 |
| Longitude | -120.45 |
| Data Year | 2026 |
Where is San Luis Obispo County Located?
San Luis Obispo County is located in United States, in the California region, at coordinates 35.38° latitude and -120.45° longitude. San Luis Obispo County sits in the subtropics, typically enjoying warm temperatures year-round.
Nearby Cities
Other Cities in United States
Largest Cities in United States
| # | City | Population |
|---|---|---|
| 1 | Harris County | 4,731,145 |
| 2 | Los Angeles | 3,898,747 |
| 3 | San Diego County | 3,298,634 |
| 4 | Brooklyn | 2,736,074 |
| 5 | Miami-Dade County | 2,701,767 |
Frequently Asked Questions
What is the population of San Luis Obispo County?
The population of San Luis Obispo County is approximately 282,424 residents according to the latest available data (2026).
Where is San Luis Obispo County located?
San Luis Obispo County is located in United States at approximately 35.38° latitude and -120.45° longitude.
Is San Luis Obispo County one of the largest cities in United States?
With a population of 282,424, San Luis Obispo County is one of the notable urban areas in United States. It ranks #275 out of 867 cities in the country.
