Diamond Bar vs South Whittier

A side-by-side comparison of Diamond Bar and South Whittier: population, income, housing, and more.

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

South Whittier has the higher population (55,201 vs 53,750 in Diamond Bar). Diamond Bar has the higher median household income ($106,602 vs $98,974 in South Whittier). Diamond Bar has the higher median home value ($867,000 vs $641,700 in South Whittier).

Population, income & housing

	Diamond Bar	South Whittier
Population	53,750	55,201
Median age	45.6 yrs	35.1 yrs
Median household income	$106,602	$98,974
Median home value	$867,000	$641,700
Median gross rent	$2,422	$1,823
Housing units	19,000	15,685
Homeownership rate	77.4%	64.5%
Bachelor's degree or higher	52.7%	17.7%
Unemployment rate	5.1%	4.9%

Trends (ACS 5-year, 2019–2023)

	Diamond Bar	South Whittier
Population	56,211 → 53,750 (-4.4%)	60,357 → 55,201 (-8.5%)
Median household income	$99,083 → $106,602 (+7.6%)	$71,458 → $98,974 (+38.5%)
Median home value	$664,400 → $867,000 (+30.5%)	$474,800 → $641,700 (+35.2%)
Median gross rent	$2,071 → $2,422 (+16.9%)	$1,536 → $1,823 (+18.7%)

Diamond Bar

Population

56,21153,750

Median household income

$99,083$106,602

Median home value

$664,400$867,000

Median gross rent

$2,071$2,422

South Whittier

Population

60,35755,201

Median household income

$71,458$98,974

Median home value

$474,800$641,700

Median gross rent

$1,536$1,823

Age & race/ethnicity

Age distribution (share)

	Diamond Bar	South Whittier
Under 5	4.2%	6.3%
5 to 17	14.8%	17.2%
18 to 24	6.4%	10.4%
25 to 34	12.4%	16.1%
35 to 44	11.1%	14.0%
45 to 54	15.1%	13.0%
55 to 64	15.9%	11.5%
65 to 74	13.3%	6.9%
75 and over	6.9%	4.7%

Race & ethnicity (share)

	Diamond Bar	South Whittier
White (non-Hispanic)	13.1%	12.3%
Black or African American	3.0%	0.9%
American Indian & Alaska Native	0.6%	0.2%
Asian	61.8%	6.4%
Native Hawaiian & Pacific Islander	0.2%	0.1%
Some other race	0.4%	0.4%
Two or more races	3.9%	1.2%
Hispanic or Latino	17.0%	78.6%

Educational attainment (age 25+)

Share of adults 25+

	Diamond Bar	South Whittier
No high school diploma	7.2%	17.7%
High school graduate	14.7%	30.9%
Some college or associate's	25.4%	33.7%
Bachelor's degree	34.2%	12.0%
Graduate or professional degree	18.4%	5.8%

Commute to work

How workers get to work (share)

	Diamond Bar	South Whittier
Drove alone	71.9%	77.5%
Carpooled	8.9%	11.7%
Public transit	1.4%	0.7%
Walked	0.4%	0.6%
Bicycle	0.3%	0.2%
Worked from home	16.5%	7.6%
Other means	0.6%	1.5%

Housing

Units in structure (share)

	Diamond Bar	South Whittier
1-unit, detached	70.5%	76.1%
1-unit, attached	11.8%	5.4%
2 to 4 units	5.5%	2.0%
5 to 19 units	5.4%	5.3%
20 or more units	4.9%	10.7%
Mobile home & other	1.9%	0.4%

Poverty & households

	Diamond Bar	South Whittier
Poverty rate	9.1%	8.4%
Average household size	2.93	3.62
Mean commute (minutes)	35	32
Median year structure built	1979	1957