Castaic vs South El Monte

A side-by-side comparison of Castaic and South El Monte: population, income, housing, and more.

Castaic and South El Monte are places in California. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

South El Monte has the higher population (19,413 vs 18,479 in Castaic). Castaic has the higher median household income ($132,153 vs $67,153 in South El Monte). Castaic has the higher median home value ($710,400 vs $578,100 in South El Monte).

Population, income & housing

	Castaic	South El Monte
Population	18,479	19,413
Median age	37.2 yrs	37.8 yrs
Median household income	$132,153	$67,153
Median home value	$710,400	$578,100
Median gross rent	$1,751	$1,708
Housing units	5,869	5,198
Homeownership rate	84.4%	49.5%
Bachelor's degree or higher	41.4%	10.2%
Unemployment rate	5.1%	7.5%

Trends (ACS 5-year, 2019–2023)

	Castaic	South El Monte
Population	19,400 → 18,479 (-4.7%)	20,721 → 19,413 (-6.3%)
Median household income	$117,031 → $132,153 (+12.9%)	$52,204 → $67,153 (+28.6%)
Median home value	$553,600 → $710,400 (+28.3%)	$445,500 → $578,100 (+29.8%)
Median gross rent	$1,745 → $1,751 (+0.3%)	$1,333 → $1,708 (+28.1%)

Castaic

Population

19,40018,479

Median household income

$117,031$132,153

Median home value

$553,600$710,400

Median gross rent

$1,745$1,751

South El Monte

Population

20,72119,413

Median household income

$52,204$67,153

Median home value

$445,500$578,100

Median gross rent

$1,333$1,708

Age & race/ethnicity

Age distribution (share)

	Castaic	South El Monte
Under 5	6.8%	6.5%
5 to 17	19.0%	17.9%
18 to 24	7.6%	9.1%
25 to 34	13.2%	13.1%
35 to 44	13.2%	11.7%
45 to 54	14.3%	14.0%
55 to 64	14.3%	12.8%
65 to 74	7.6%	8.4%
75 and over	4.0%	6.5%

Race & ethnicity (share)

	Castaic	South El Monte
White (non-Hispanic)	43.1%	3.2%
Black or African American	1.5%	1.0%
American Indian & Alaska Native	0.1%	0.5%
Asian	11.5%	20.1%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	1.4%	0.1%
Two or more races	6.3%	0.3%
Hispanic or Latino	36.2%	74.9%

Educational attainment (age 25+)

Share of adults 25+

	Castaic	South El Monte
No high school diploma	6.9%	44.3%
High school graduate	18.1%	24.6%
Some college or associate's	33.6%	21.0%
Bachelor's degree	29.3%	7.6%
Graduate or professional degree	12.0%	2.6%

Commute to work

How workers get to work (share)

	Castaic	South El Monte
Drove alone	75.7%	74.8%
Carpooled	8.8%	12.2%
Public transit	0.4%	2.6%
Walked	0.5%	2.8%
Bicycle	0.0%	0.9%
Worked from home	12.5%	6.0%
Other means	2.1%	0.7%

Housing

Units in structure (share)

	Castaic	South El Monte
1-unit, detached	85.6%	65.5%
1-unit, attached	1.4%	9.5%
2 to 4 units	0.1%	4.9%
5 to 19 units	3.6%	7.0%
20 or more units	6.3%	3.5%
Mobile home & other	2.9%	9.6%

Poverty & households

	Castaic	South El Monte
Poverty rate	4.0%	23.7%
Average household size	3.18	3.84
Mean commute (minutes)	31	27
Median year structure built	1990	1959