San Luis Obispo County, California Population 2020

San Luis Obispo County, California's estimated population is 282,838 with a growth rate of 0.31% in the past year according to the most recent United States census data. San Luis Obispo County, California is the 23rd largest county in California.

Year Population Growth Growth Rate
2018284,0101,1720.41%
2017282,8388800.31%
2016281,9581,7870.64%
2015280,1711,8750.67%
2014278,2962,5450.92%
2013275,7511,5670.57%
2012274,1843,1341.16%
2011271,0501,2450.46%
2010269,80552,64324.24%
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, California Population Growth

Population by Race

Race Population Percentage
White242,07886.01%
Some Other Race11,5814.11%
Asian10,2343.64%
Two or More Races10,1393.60%
Black or African American5,2651.87%
American Indian and Alaska Native1,9000.68%
Native Hawaiian and Other Pacific Islander2580.09%

San Luis Obispo County, California Population Pyramid 2020

San Luis Obispo County, California Median Age

39.1


Total

37.5


Male

41.2


Female

San Luis Obispo County, California Adults

There are 230,963 adults, (52,758 of whom are seniors) in San Luis Obispo County, California.

San Luis Obispo County, California Age Dependency

57.9

Age Dependency Ratio

29.6

Old Age Dependency Ratio

28.3

Child Dependency Ratio

San Luis Obispo County, California Sex Ratio

Female

138,686

49.27%

Male

142,769

50.73%

San Luis Obispo County, California Households and Families

San Luis Obispo County, California Renter vs Owner Occupied by Household Type

San Luis Obispo County, California Household Types

Type Owner Renter
Married75.7%24.3%
All60.8%39.2%
Male49.3%50.7%
Non Family45.8%54.2%
Female43.5%56.5%

60.8%

Rate of Home Ownership

Type Count Average Size Owned
All105,3172.5260.8
Married52,9183.0775.7
Non Family38,7371.545.8
Female8,9223.2243.5
Male4,7403.3149.3

3

Average Family Size

2.52

Average Household Size

6.2%

Unmarried (Opposite Sex)

0.4%

Unmarried (Same Sex)

San Luis Obispo County, California Education

Education Attained Count Percentage
Less Than 9th Grade7,7424.13%
9th to 12th Grade9,3815.00%
High School Graduate37,16319.81%
Some College48,65025.94%
Associates Degree19,70210.50%
Bachelors Degree40,13821.40%
Graduate Degree24,78513.21%

San Luis Obispo County, California Educational Attainment by Race

Name Total High School Bachelors
White139,797134,56755,113
Hispanic33,89923,5304,926
Other Race6,3224,211659
Asian5,7665,2842,695
Multiple Races4,5814,2761,564
Black3,7062,978617
Native American1,4231,235285
Islander21020130

The highest rate of high school graduation is among white people with a rate of 96.26%.

The highest rate of bachelors degrees is among asian people with a rate of 46.74%.

Name Average Male Female
Overall$41,730$52,092$34,068
Less Than High School$25,095$29,233$16,776
High School Grad$31,489$38,907$25,315
Some College$39,709$52,518$31,954
Bachelors Degree$55,100$69,537$44,818
Graduate Degree$69,674$86,138$62,216

$41,730

Average Earnings

$52,092

Average Male

$34,068

Average Female

San Luis Obispo County, California Language

San Luis Obispo County, California Language by Age

San Luis Obispo County, California Language

82.11% of San Luis Obispo County, California residents speak only English, while 17.89% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 13.67% of the population.

San Luis Obispo County, California Poverty

San Luis Obispo County, California Poverty by Race

Name Total In Poverty Poverty Rate
White186,28023,11312.41%
Hispanic60,0709,05415.07%
Other10,5121,96718.71%
Asian8,1991,53418.71%
Multiple9,2751,18212.74%
Black3,15373523.31%
Native1,756724.10%

13.30%

Overall Poverty Rate

12.73%

Male Poverty Rate

13.87%

Female Poverty Rate

Poverty in San Luis Obispo County, California

The race most likely to be in poverty in San Luis Obispo County, California is Black, with 23.31% below the poverty level.

The race least likely to be in poverty in San Luis Obispo County, California is Native, with 4.10% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.05%. Among those working part-time, it was 22.78%, and for those that did not work, the poverty rate was 18.59%.

Name Poverty
Less Than High School17.66%
High School11.68%
Some College8.85%
Bachelors or Greater4.31%

San Luis Obispo County, California Income

San Luis Obispo County, California Income by Household Type

Name Median Mean
Households$70,699$93,008
Families$88,636$110,238
Married Families$100,419$122,242
Non Families$41,730$58,473

San Luis Obispo County, California Marital Status

San Luis Obispo County, California Marital Status

Marriage Rates

47.6%

Overall Marriage Rate

47.8%

Male Marriage Rate

47.4%

Female Marriage Rate

San Luis Obispo County, California Married by Age and Sex

San Luis Obispo County, California Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 35-44.

San Luis Obispo County, California Marital Status by Race

San Luis Obispo County, California Veterans

17,326

Number of Veterans

16,423

Male Veterans

903

Female Veterans

War Veterans
Vietnam7,293
First Gulf War2,161
Korea2,145
Second Gulf War1,830
World War II922
Name Veterans % of Total
White15,8117.94%
Hispanic1,1882.74%
2 or More5648.54%
Black3668.65%
Other2002.42%
Asian1982.20%
Indian1579.45%
Hawaiian3014.29%

$San Luis Obispo County, California Veterans by Education

6.82%

Veteran Poverty Rate

32.14%

Veteran Disability Rate

San Luis Obispo County, California Employment Status

58%

Labor Force Participation

54.6%

Employment Rate

4.6%

Unemployment Rate

San Luis Obispo County, California Place of Birth

Origin of Non-Citizens

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

66.10%

Born in California

89.66%

Native Born

10.34%

Foreign Born

5.34%

Non Citizen

Place of Birth

89.66% of San Luis Obispo County, California residents were born in the United States, with 66.10% having been born in California. 5.34% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

  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