San Luis Obispo County, California's estimated 2024 population is 281,232 with a growth rate of -0.14% in the past year according to the most recent United States census data. San Luis Obispo County, California is the 24th largest county in California. The 2010 population was 269,800 and has seen a growth of 4.24% since that time.
Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2029 | 279,197 | -407 | -0.15% |
| 2028 | 279,604 | -407 | -0.15% |
| 2027 | 280,011 | -407 | -0.15% |
| 2026 | 280,418 | -407 | -0.14% |
| 2025 | 280,825 | -407 | -0.14% |
| 2024 | 281,232 | -407 | -0.14% |
| 2023 | 281,639 | -407 | -0.14% |
| 2022 | 282,046 | 2,582 | 0.92% |
| 2021 | 279,464 | -2,420 | -0.86% |
| 2020 | 281,884 | -844 | -0.3% |
| 2019 | 282,728 | -522 | -0.18% |
| 2018 | 283,250 | 777 | 0.28% |
| 2017 | 282,473 | 589 | 0.21% |
| 2016 | 281,884 | 1,746 | 0.62% |
| 2015 | 280,138 | 1,867 | 0.67% |
| 2014 | 278,271 | 2,558 | 0.93% |
| 2013 | 275,713 | 1,539 | 0.56% |
| 2012 | 274,174 | 3,118 | 1.15% |
| 2011 | 271,056 | 1,256 | 0.47% |
| 2010 | 269,800 | 0 | 0% |
| 1990 | 217,162 | 61,727 | 39.71% |
| 1980 | 155,435 | 49,745 | 47.07% |
| 1970 | 105,690 | 24,646 | 30.41% |
| 1960 | 81,044 | 29,627 | 57.62% |
| 1950 | 51,417 | 18,171 | 54.66% |
| 1940 | 33,246 | 3,633 | 12.27% |
| 1930 | 29,613 | 7,720 | 35.26% |
| 1920 | 21,893 | 2,510 | 12.95% |
| 1910 | 19,383 | 2,746 | 16.51% |
| 1900 | 16,637 | 565 | 3.52% |
| 1890 | 16,072 | 6,930 | 75.8% |
| 1880 | 9,142 | 4,370 | 91.58% |
| 1870 | 4,772 | 2,990 | 167.79% |
| 1860 | 1,782 | 1,446 | 430.36% |
| 1850 | 336 | -278,861 | -99.88% |
White
Two or more races
Other race
Asian
Black or African American
Native American
Native Hawaiian or Pacific Islander
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 108,099 | 2.47 | 62 | 38 |
| Married | 53,577 | 3.06 | 77.4 | 22.6 |
| Non Family | 40,192 | 1.47 | 45.8 | 54.2 |
| Female | 9,432 | 3.16 | 53 | 47 |
| Male | 4,898 | 2.92 | 44.5 | 55.5 |
2.95
Average Family Size
2.47
Average Household Size
62.0%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
Less Than 9th Grade
9th to 12th Grade
High School Graduate
Some College
Associates Degree
Bachelors Degree
Graduate Degree
High School Graduation Rate
Bachelors Rate
The highest rate of high school graduation is among white people with a rate of 96.57%.
The highest rate of bachelors degrees is among asian people with a rate of 46.94%.
All
Male
Female
$51,919
Average Earnings
$61,547
Average Male
$42,631
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
83.16% of San Luis Obispo County, California residents speak only English, while 16.84% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 12.13% of the population.
rate
12.58%
Overall Poverty Rate
12.25%
Male Poverty Rate
12.92%
Female Poverty Rate
The race most likely to be in poverty in San Luis Obispo County, California is Islander, with 37.79% below the poverty level.
The race least likely to be in poverty in San Luis Obispo County, California is White, with 11.17% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 2.36%. Among those working part-time, it was 21.42%, and for those that did not work, the poverty rate was 16.83%.
Married
Widowed
Divorced
Separated
NeverMarried
47.3%
Overall Marriage Rate
48.1%
Male Marriage Rate
46.4%
Female Marriage Rate
male
female
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 45-54.
Married
Widowed
Divorced
Separated
NeverMarried
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
5.72%
Veteran Poverty Rate
33.07%
Veteran Disability Rate
LaborForceParticipation
58.6%
Labor Force Participation
55.1%
Employment Rate
5%
Unemployment Rate
LaborForceParticipation
LaborForceParticipation
Europe
Asia
Africa
Oceania
Latin America
North America
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Europe
Asia
Africa
Oceania
Latin America
North America
68.55%
Born in San Luis Obispo County, California
90.51%
Native Born
9.49%
Foreign Born
4.55%
Non Citizen
4.94%
Naturalized
90.51% of San Luis Obispo County, California residents were born in the United States, with 68.55% having been born in California. 4.55% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.