San Luis Obispo County, California
San Luis Obispo County: county in California, United States
About
San Luis Obispo County is a county located in the U.S. state of California. As of the 2010 census, the population was 269,637 and a population density of 29 people per km². After 10 years in 2020 county had an estimated population of 282,249 inhabitants. Its county seat is San Luis Obispo. The county was created 176 years ago in 1849.
County Snapshot
San Luis Obispo County at a glance
San Luis Obispo County currently has 13 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
13
These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.
California counties
58
Open related pagesLargest city
San Luis ObispoPopulation 47,590
Top linked places
Quick Facts about San Luis Obispo County
| Population | 282,249 (2020) |
| Country | United States of America |
| State | California (United States) |
| Area | 9364 km2 |
| Water as percent of area | 8.63% |
| Land as percent of area | 91.37% |
| Latitude & Longitude | 35.3874,-120.4522 |
| Named for | San Luis Obispo |
| Altitude | 1,178 feet / 359 meters |
| Capital | San Luis Obispo |
| Establishment | January 01, 1850 |
| Time Zone | America/Los_Angeles |
| Local time | 16:13:02 (18th April 2026) |
| Density | 30 Pop. per km² as of 2020 |
| Population growth | 4.47% (2010-2020) |
| Weather | 42℉ Mostly Clear 7-days weather |
Geography
San Luis Obispo County is located at 35°23'15"N 120°27'8"W (35.3874200, -120.4522000). It has 3 neighbors: Brooklyn, Monterey County and Santa Barbara County.
San Luis Obispo County map
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The largest city of San Luis Obispo County is San Luis Obispo with a population of 47,590. Other cities include, Atascadero population 30,254, Paso Robles population 27,157, Arroyo Grande population 17,821 and Grover Beach population 13,325. See all San Luis Obispo County cities & populated places.
San Luis Obispo County Populated Places
Cities, towns, neighborhoods & other populated places in San Luis Obispo County.
| City Name | Population | Title |
|---|---|---|
| San Luis Obispo | 47,590 | A city in San Luis Obispo County, California. |
| Atascadero | 30,254 | City in California, USA |
| Paso Robles | 27,157 | City in San Luis Obispo County, California, United States |
| Arroyo Grande | 17,821 | City in San Luis Obispo County, California, United States |
| Nipomo | 16,714 | Census-designated place in San Luis Obispo County, California |
| Grover Beach | 13,325 | City in San Luis Obispo County, California, United States |
| Morro Bay | 10,560 | City in San Luis Obispo County, California. |
| Pismo Beach | 7,955 | City of California, United States |
| Oceano | 7,286 | Census-designated place in San Luis Obispo County, California |
| Cambria | 6,032 | Census designated place |
| Cayucos | 2,592 | Census designated place |
| Lake Nacimiento | 2,411 | Census designated place |
| Shandon | 1,295 | Census-designated place in San Luis Obispo County, California |
Weather
Mostly clear, with a low around 42. North wind 0 to 5 mph.
7-Day ForecastOfficial website of San Luis Obispo County
Official Website- San Luis Obispo
Demographics
The population of San Luis Obispo County increased by 4.47% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 269,637 | - | census |
| 2011 | 271,058 | 0.52% | estimation process |
| 2012 | 274,160 | 1.13% | estimation process |
| 2013 | 275,696 | 0.56% | estimation process |
| 2014 | 278,227 | 0.91% | estimation process |
| 2015 | 280,077 | 0.66% | estimation process |
| 2016 | 281,803 | 0.61% | estimation process |
| 2017 | 282,481 | 0.24% | estimation process |
| 2018 | 283,354 | 0.31% | estimation process |
| 2019 | 283,111 | -0.09% | estimation process |
| 2020 | 282,249 | -0.31% | estimation process |
People born in San Luis Obispo County (4)
People born in San Luis Obispo County, including actor Malachi Pearson, actress Olivia Dudley, actor Asher Metchik, .
More notable people
- Jordan Cunningham (American politician) he was born in 06/12/1977
California Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Los Angeles County | 9,943,046 | County in California, United States of America |
| Los Angeles | 3,970,219 | The second most populous city in the United States and the center of the Los Angeles metropolitan area. |
| San Diego County | 3,332,427 | Founded in 1850, is one of 58 counties in the US state of California. |
| Orange County | 3,166,857 | County in California, United States |
| Riverside County | 2,489,188 | County in California, United States |
| San Bernardino County | 2,189,183 | County in California, United States |
| Santa Clara County | 1,907,105 | County in California, United States |
| Alameda County | 1,662,323 | County in California, United States |
| Sacramento County | 1,559,146 | County in California, United States |
| San Diego | 1,422,420 | The eighth most populous city in the United States and the center of the San Diego metropolitan area. |
| Laguna | 1,370,232 | A city located in Orange County, California. |
| Contra Costa County | 1,152,333 | County in California, United States |
| San Jose | 1,013,616 | The tenth most populous city in the United States and the center of the San Jose metropolitan area. |
| Fresno County | 1,000,918 | County in California, United States |
| Kern County | 901,362 | This county is located in the southern San Joaquin Valley, extending eastward over the Tehachapi Mountains to the Mojave Desert. |
| San Francisco County | 866,606 | County, coextensive with the city of San Francisco, California, United States |