San Luis Obispo County Population 2018

San Luis Obispo County's estimated population is 283,405 with a growth rate of 0.40% in the past year according to the most recent United States census data. San Luis Obispo County is the 23rd largest county in California.

Year Population Growth Growth Rate
2017283,4051,1230.40%
2016282,2821,8800.67%
2015280,4021,8680.67%
2014278,5342,5610.93%
2013275,9731,5950.58%
2012274,3783,2281.19%
2011271,1501,3310.49%
2010269,81952,65724.25%
1990217,16261,72739.71%
1980155,43549,74547.07%
1970105,69024,64630.41%
196081,04429,62757.62%
195051,41718,17154.66%
194033,2463,63312.27%
193029,6137,72035.26%
192021,8932,51012.95%
191019,3832,74616.51%
190016,6375653.52%
189016,0726,93075.80%
18809,1424,37091.58%
18704,7722,990167.79%
18601,7821,446430.36%
18503360.00%

San Luis Obispo County Population Growth

Population Data via

San Luis Obispo County Race Data

Race Population Percentage
White250,35788.34%
Asian10,8613.83%
Two or More Races9,5873.38%
Black or African American5,7282.02%
American Indian and Alaska Native3,8771.37%
Native Hawaiian and Other Pacific Islander5500.19%

San Luis Obispo County Population Pyramid

0k5k10k15k Male Population0k5k10k15k Female Population8580757065605550454035302520151050
Data Sources
  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990