Rosemont CDP, California Demographics & Population 2026

Name: Rosemont CDP, California Demographics
Creator: U.S. Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

As of 2026, Rosemont CDP, California has a total population of 23,448, the 316th largest city in California, with a median household income of $86,178, which is 11% lower than the state average. The poverty rate is 15.5%.

Key Takeaways

One of the most racially diverse communities in California (diversity index: 70/100).

Rosemont CDP Quick Facts

Population 23,448

Median Household Income $86,178

Median Home Value $436,400

Poverty Rate 15.5%

Unemployment Rate 6.6%

Median Age 35.7 years

Homeownership Rate 60.3%

Affordability Ratio 5.1x

Bachelor's Degree or Higher 30.1%

High School Graduation Rate 94.2%

Diversity Index 70/100

Population 23,448 316th of 1,577

Median Income $86,178 average

Poverty Rate 15.5% 24% higher national

Median Home Value $436,400 average

How Rosemont CDP Compares

Median Household Income

Rosemont CDP

$86,178

$96,334

National

$78,538

Median Home Value

Rosemont CDP

$436,400

$695,400

National

$303,400

Economy & Housing

Household Income Distribution

Under $25K 14.9%

$25K-$50K 14.1%

$50K-$100K 30.1%

$100K+ 40.8%

Employment

6.6% Unemployment Rate State: 6.4% | National: 5.2%

63.8% Labor Force Participation

Housing Overview

Owner 60.3%

Renter 39.7%

Affordability Index Expensive

5.1x home value to income ratio

People & Demographics

Age Distribution

Under 18

23.9%

18-34

24.9%

35-54

25.8%

55-74

19.5%

75+

5.8%

Race & Ethnicity

Diversity Index

Very High Diversity

This community is exceptionally diverse, with no single racial or ethnic group dominating the population.

State average: 69 | National average: 60

Education

Educational Attainment (Adults 25+)

Rosemont CDP Rankings in California

#316 Population of 1,577

#700 Median Income of 1,577

#670 Education of 1,577

#821 Home Value of 1,577

Explore California Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Cities Similar to Rosemont CDP

These cities in the same state have comparable population and economic profiles.

City	Population	Median Income	Home Value	Bachelor's+	Poverty
Oakdale city	23,155	$86,478	$432,800	21.4%	13.5%
San Fernando city	23,716	$79,694	$630,700	16.1%	10.5%
Ashland CDP	22,784	$81,604	$695,300	20.8%	16.2%
West Puente Valley CDP	22,198	$86,692	$591,800	14.7%	11.3%
Bay Point CDP	24,065	$80,684	$479,100	15.2%	13.3%

Population Overview

Rosemont CDP is a small city located in California. The total population is 23,448. It ranks as the 316th most populous out of 1,577 cities and towns in California.

Age Demographics

The median age in Rosemont CDP is 35.7 years. This is 5% lower than the state median of 37.6 years.

Economy, Income & Housing

The median household income in Rosemont CDP is $86,178. This is 11% lower than the state median of $96,334. Compared to the national median of $78,538, household income here is 10% higher. The poverty rate stands at 15.5%. This is 29% higher than the state poverty rate of 12.0%. The unemployment rate is 6.6%. This is 3% higher than the state rate of 6.4%. The median home value is $436,400. Housing costs are 37% lower than the state median of $695,400. The home-value-to-income ratio is 5.1x. 60.3% of occupied housing units are owner-occupied. This homeownership rate is 8% higher than the state average of 55.8%.

Race & Ethnicity

The largest racial or ethnic group in Rosemont CDP is White (non-Hispanic), making up 45.6% of the population. Hispanic or Latino residents account for 21.8%. The Black or African American population is significantly higher than the state average (11.2% vs 5.3%).

Education

30.1% of residents aged 25 and older hold a bachelor's degree or higher. This is 17% 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 94.2%.

Data Sources & Methodology

All demographic data for Rosemont 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.

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Frequently Asked Questions

What is the population of Rosemont CDP, California?

Rosemont CDP, California has a population of 23,448 according to the most recent U.S. Census ACS 5-Year Estimates.

What is the median household income in Rosemont CDP, CA?

The median household income in Rosemont CDP is $86,178, which is 10% higher the national median of $78,538.

What is the poverty rate in Rosemont CDP, CA?

The poverty rate in Rosemont CDP is 15.5%. This means approximately 3,596 residents live below the federal poverty line.

What is the racial makeup of Rosemont CDP, California?

Rosemont CDP's population is 45.6% White, 11.2% Black, 21.8% Hispanic/Latino, and 12.7% Asian.

What is the median home value in Rosemont CDP, CA?

The median home value in Rosemont CDP is $436,400. The home-value-to-income ratio is 5.1x.

How educated is Rosemont CDP, California?

30.1% of adults (25+) in Rosemont CDP hold a bachelor's degree or higher, and 8.7% hold a graduate or professional degree.