South Monrovia Island CDP, California Demographics & Population 2026

Population Overview

South Monrovia Island CDP is a small city located in California. The total population is 7,072. It ranks as the 576th most populous out of 1,577 cities and towns in California.

Age Demographics

The median age in South Monrovia Island CDP is 34.4 years. This is 9% lower than the state median of 37.6 years.

Economy, Income & Housing

The median household income in South Monrovia Island CDP is $109,730. This is 14% higher than the state median of $96,334. Compared to the national median of $78,538, household income here is 40% higher. The poverty rate stands at 6.0%. This is 50% lower than the state poverty rate of 12.0%. The unemployment rate is 5.4%. This is 16% lower than the state rate of 6.4%. The median home value is $660,800. Housing costs are 5% lower than the state median of $695,400. The home-value-to-income ratio is 6.0x. 66.8% of occupied housing units are owner-occupied. This homeownership rate is 20% higher than the state average of 55.8%.

Race & Ethnicity

The largest racial or ethnic group in South Monrovia Island CDP is Hispanic or Latino, making up 70.4% of the population. White (non-Hispanic) residents account for 11.5%. The White (non-Hispanic) population (11.5%) is well below the state average of 34.6%. The Hispanic or Latino population is significantly higher than the state average (70.4% vs 39.8%).

Education

27.3% of residents aged 25 and older hold a bachelor's degree or higher. This is 25% lower than the state rate of 36.5%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 75.6%.

Data Sources & Methodology

All demographic data for South Monrovia Island CDP, California is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against California state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,577 Census-designated places in California. For official data, visit data.census.gov.