Mountain Mesa vs Onyx

A side-by-side comparison of Mountain Mesa and Onyx: population, income, housing, and more.

Mountain Mesa and Onyx are places in California. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Mountain Mesa has the higher population (587 vs 574 in Onyx). Mountain Mesa has the higher median household income ($60,231 vs $27,462 in Onyx). Mountain Mesa has the higher median home value ($219,800 vs $174,300 in Onyx).

Population, income & housing

	Mountain Mesa	Onyx
Population	587	574
Median age	72.3 yrs	56.1 yrs
Median household income	$60,231	$27,462
Median home value	$219,800	$174,300
Housing units	302	408
Homeownership rate	84.2%	81.1%
Bachelor's degree or higher	12.2%	19.0%
Unemployment rate	0.0%	33.3%

Trends (ACS 5-year, 2019–2023)

	Mountain Mesa	Onyx
Population	1,396 → 587 (-58.0%)	478 → 574 (+20.1%)
Median household income	$38,175 → $60,231 (+57.8%)	$34,468 → $27,462 (-20.3%)
Median home value	$177,200 → $219,800 (+24.0%)	$58,400 → $174,300 (+198.5%)

Mountain Mesa

Population

1,396587

Median household income

$38,175$60,231

Median home value

$177,200$219,800

Onyx

Population

478574

Median household income

$34,468$27,462

Median home value

$58,400$174,300

Age & race/ethnicity

Age distribution (share)

	Mountain Mesa	Onyx
Under 5	4.9%	0.0%
5 to 17	0.0%	0.0%
18 to 24	0.0%	29.3%
25 to 34	11.1%	7.3%
35 to 44	2.0%	0.0%
45 to 54	0.7%	12.9%
55 to 64	16.7%	18.6%
65 to 74	22.0%	27.9%
75 and over	42.6%	4.0%

Race & ethnicity (share)

	Mountain Mesa	Onyx
White (non-Hispanic)	90.8%	53.3%
Black or African American	2.6%	0.0%
American Indian & Alaska Native	0.0%	0.0%
Asian	2.0%	9.9%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.0%	0.0%
Two or more races	2.0%	17.4%
Hispanic or Latino	2.6%	19.3%

Educational attainment (age 25+)

Share of adults 25+

	Mountain Mesa	Onyx
No high school diploma	15.2%	10.3%
High school graduate	25.4%	37.2%
Some college or associate's	47.1%	33.5%
Bachelor's degree	9.0%	19.0%
Graduate or professional degree	3.2%	0.0%

Commute to work

How workers get to work (share)

	Mountain Mesa	Onyx
Drove alone	71.4%	34.5%
Carpooled	0.0%	0.0%
Public transit	0.0%	0.0%
Walked	0.0%	0.0%
Bicycle	0.0%	0.0%
Worked from home	28.6%	0.0%
Other means	0.0%	65.5%

Housing

Units in structure (share)

	Mountain Mesa	Onyx
1-unit, detached	76.5%	46.8%
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%	14.0%
Mobile home & other	23.5%	39.2%

Poverty & households

	Mountain Mesa	Onyx
Poverty rate	21.6%	33.3%
Average household size	1.85	1.90
Mean commute (minutes)	18	—
Median year structure built	1979	1974