Monmouth vs Three Rocks

A side-by-side comparison of Monmouth and Three Rocks: population, income, housing, and more.

Monmouth and Three Rocks are places in California. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Three Rocks has the higher population (180 vs 168 in Monmouth). Three Rocks has the higher median household income ($85,208 vs $40,673 in Monmouth). Three Rocks has the higher median home value ($144,800 vs $113,500 in Monmouth).

Population, income & housing

	Monmouth	Three Rocks
Population	168	180
Median age	24.3 yrs	53.2 yrs
Median household income	$40,673	$85,208
Median home value	$113,500	$144,800
Median gross rent	$1,391	—
Housing units	40	56
Homeownership rate	54.1%	80.4%
Bachelor's degree or higher	10.3%	2.0%
Unemployment rate	6.7%	4.3%

Trends (ACS 5-year, 2019–2023)

	Monmouth	Three Rocks
Population	111 → 168 (+51.4%)	249 → 180 (-27.7%)
Median household income	$32,969 → $40,673 (+23.4%)	—
Median home value	$124,100 → $113,500 (-8.5%)	$162,500 → $144,800 (-10.9%)
Median gross rent	$850 → $1,391 (+63.6%)	—

Monmouth

Population

111168

Median household income

$32,969$40,673

Median home value

$124,100$113,500

Median gross rent

$850$1,391

Three Rocks

Population

249180

Median home value

$162,500$144,800

Age & race/ethnicity

Age distribution (share)

	Monmouth	Three Rocks
Under 5	19.6%	7.2%
5 to 17	26.2%	6.7%
18 to 24	7.7%	2.2%
25 to 34	12.5%	16.1%
35 to 44	10.7%	3.9%
45 to 54	11.3%	24.4%
55 to 64	1.2%	12.8%
65 to 74	6.5%	6.7%
75 and over	4.2%	20.0%

Race & ethnicity (share)

	Monmouth	Three Rocks
White (non-Hispanic)	6.5%	0.0%
Black or African American	22.6%	0.0%
American Indian & Alaska Native	0.0%	0.0%
Asian	2.4%	0.0%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.0%	0.0%
Two or more races	0.0%	0.0%
Hispanic or Latino	68.5%	100.0%

Educational attainment (age 25+)

Share of adults 25+

	Monmouth	Three Rocks
No high school diploma	30.8%	45.7%
High school graduate	43.6%	31.1%
Some college or associate's	15.4%	21.2%
Bachelor's degree	10.3%	0.0%
Graduate or professional degree	0.0%	2.0%

Commute to work

How workers get to work (share)

	Monmouth	Three Rocks
Drove alone	91.1%	69.3%
Carpooled	8.9%	12.5%
Public transit	0.0%	0.0%
Walked	0.0%	0.0%
Bicycle	0.0%	0.0%
Worked from home	0.0%	18.2%
Other means	0.0%	0.0%

Housing

Units in structure (share)

	Monmouth	Three Rocks
1-unit, detached	80.0%	100.0%
1-unit, attached	0.0%	0.0%
2 to 4 units	0.0%	0.0%
5 to 19 units	0.0%	0.0%
20 or more units	0.0%	0.0%
Mobile home & other	20.0%	0.0%

Poverty & households

	Monmouth	Three Rocks
Poverty rate	29.8%	12.2%
Average household size	4.54	3.21
Mean commute (minutes)	28	41
Median year structure built	1968	1967