Blacklake, California Demographics & Population 2026

A note before these figures: with a population of 983, Blacklake's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.

Population Overview

Blacklake is a small community located in California, within San Luis Obispo County. The total population is 983. It ranks as the 1066th most populous out of 1,570 Census-designated places in California.

Age Demographics

The median age in Blacklake is 70.4 years. This is 86% higher than the state median of 37.9 years. Only 7.2% of residents are under 18, indicating fewer families with children. 31.2% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Blacklake is $99,417. This is about the same as the state median of $99,122. It is also 23% higher than the national median of $80,734. The poverty rate stands at 0.8%. This is 93% lower than the state poverty rate of 12.0%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The survey records no unemployed residents in Blacklake, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $825,600. Housing costs are 12% higher than the state median of $734,700. The home-value-to-income ratio of 8.3x suggests that housing affordability is a significant concern for many residents. 80.0% of occupied housing units are owner-occupied. This homeownership rate is 43% higher than the state average of 55.9%.

Race & Ethnicity

Blacklake has a predominantly White (non-Hispanic) population, comprising 88.0% of all residents. Asian residents account for 7.6%. The White (non-Hispanic) population is significantly higher than the state average (88.0% vs 33.8%). The Hispanic or Latino population (2.4%) is well below the state average of 40.2%. The Asian population (7.6%) is well below the state average of 15.3%.

Education

47.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 29% higher than the state rate of 37.1%. Nationally, 35.7% of adults hold at least a bachelor's degree. No surveyed resident aged 25 or older reported leaving school before earning a high school diploma, though a rate of exactly 100% reflects the limits of a small sample. Notably, 22.9% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Blacklake, California is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against California state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,570 Census-designated places in California. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.