92391 ZIP Code — Twin Peaks, CA

San Bernardino County, California

ZIP code 92391 is located in Twin Peaks, California, within San Bernardino County. It covers approximately 1.98 square miles and serves a population of 2,177 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 909.

About ZIP code 92391

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1960s, giving the area an established character. Median home value is $306,300. Owner-occupancy sits near the national average at 65%.

Median household income is $75,296. Poverty affects 23% of residents, above the national average. 48% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with construction as the leading industry. The average commute of 27 minutes is near the national average.

College attainment at 11% is below the national average, consistent with a trades and production-oriented local economy.

Overall, ZIP code 92391 reflects a community defined by a trades-oriented workforce, economic challenges above the national average, and a significant Social Security-dependent population.

2,177

population

1.98

sq mi land

Standard

ZIP type

Pacific (PT)

timezone

92391 ZIP code map

Cities in ZIP code 92391

Below are the cities the US Postal Service accepts for ZIP code 92391. Using any city not on this list may result in mail delivery delays.

City	Status
Twin Peaks	Acceptable

Demographics updated 06/2026

Population
Total population	2,177
Population density	1,099 / sq mi
State FIPS	06
County FIPS	071

Geography
Land area	1.98 sq mi
Water area	0.00 sq mi
Latitude	34.2422
Longitude	-117.2312
Timezone	Pacific (PT)
Area code	909

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	57.1%	37.7%	32.6%
$50k – $100k	30.6%	32.0%	27.7%
$100k – $200k	12.4%	23.9%	26.4%
Over $200k	0.0%	6.3%	13.3%

Demographics & statistics

2,177

Population

1,099

People per sq mi

37.2

Median age

$75,296

Median household income

$26,203

Per capita income

$306,300

Median home value

Median monthly rent

64.5%

Home ownership

22.6%

Poverty rate

4.6%

Unemployment

1,317

Housing units

10.6%

Bachelor's or higher

Age distribution

Male Female

Under 5

108

5–9

10–14

15–19

20–24

270

25–34

190

114

35–44

45–54

55–59

121

60–64

143

65–74

101

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	411	18.9%
18 and over	1,766	81.1%
65 and over	472	21.7%
Median age	37.2 years

Race & ethnicity

White 37.5%

Hispanic or Latino 22.5%

Two or more races 18.4%

Black or African American 7%

Asian 6.2%

Other race 4.8%

Native Hawaiian / Pacific Islander 3.2%

American Indian / Alaska Native 0.3%

Group	Count	%
White	1,053	37.5%
Hispanic or Latino	633	22.5%
Two or more races	517	18.4%
Black or African American	198	7%
Asian	175	6.2%
Other race	136	4.8%
Native Hawaiian / Pacific Islander	90	3.2%
American Indian / Alaska Native	8	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	57.1%	37.7%	32.6%
$50k – $100k	30.6%	32.0%	27.7%
$100k – $200k	12.4%	23.9%	26.4%
Over $200k	0.0%	6.3%	13.3%

Under $10k 4.7%

$10k–$15k 6.8%

$15k–$25k 21.4%

$25k–$35k 1.3%

$35k–$50k 14.0%

$50k–$75k 1.3%

$75k–$100k 36.8%

$100k–$150k 7.4%

$150k–$200k 6.3%

Range	% of households
Under $10k	4.7%
$10k–$15k	6.8%
$15k–$25k	21.4%
$25k–$35k	1.3%
$35k–$50k	14.0%
$50k–$75k	1.3%
$75k–$100k	36.8%
$100k–$150k	7.4%
$150k–$200k	6.3%
Median income	$75,296

Housing

Home values

$100k–$150k 3.3%

$150k–$200k 19.1%

$200k–$300k 26.3%

$300k–$500k 23.4%

$500k–$1M 27.9%

Housing overview

Metric	Value
Median home value	$306,300
Median rent / month	$0
Owner occupied	64.5%
Renter occupied	35.5%
Vacant	43.7%
Single-family detached	80.5%
Large apartment buildings	6.1%
Mobile homes	6.9%
Median rooms	4.9
Avg household size (owned)	2.33

Year built

Era	%
2020 or later	0.0%
2010–2019	9.1%
2000–2009	1.3%
1990–1999	11.2%
1980–1989	15.6%
1970–1979	15.9%
1960–1969	24.7%
1950–1959	4.7%
1940–1949	1.9%
1939 or earlier	15.6%

Bedrooms

Size	% of units
No bedroom (studio)	4.5%
1 bedroom	18.8%
2 bedrooms	24.8%
3 bedrooms	35.0%
4 bedrooms	16.3%
5+ bedrooms	0.6%

Vehicles per household

Vehicles	% of households
No vehicle	14.2%
1 vehicle	18.0%
2 vehicles	37.2%
3 or more	30.5%

Heating fuel

Fuel type	%
Utility gas	76.8%
Electricity	19.5%
Wood	3.7%

Households & families

Household type	Count	%
Married-couple family	436	47.0%
Cohabiting couple	46	5.0%
Male householder, no spouse	269	29.0%
Female householder, no spouse	176	19.0%
Households with children under 18	232	25.0%
Households with seniors (65+)	462	49.8%
Average household size	2.31

Marital status

Status	Male	Female
Never married	48.1%	18.5%
Married	43.7%	59.3%
Separated	1.1%	1.7%
Widowed	0.0%	14.2%
Divorced	7.1%	6.3%

Education

Less than 9th grade 1.5%

Some HS, no diploma 3.1%

HS graduate 37.3%

Some college, no degree 34.5%

Associate's degree 12.9%

Bachelor's degree 4.2%

Graduate / professional 6.5%

Metric	%
HS diploma or higher	95.4%
Bachelor's or higher	10.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	0	0.0%
Elementary school	280	60.1%
High school	27	5.8%
College / grad school	159	34.1%

Employment

Industry of employment

Construction 26.9%

Education & healthcare 24.3%

Professional & management 19.8%

Arts, food & hospitality 12.1%

Retail trade 8.1%

Transportation & utilities 3.1%

Manufacturing 2.7%

Finance & real estate 2.6%

Other services 0.4%

Occupation

Category	%
Management, business & arts	44.6%
Service	30.2%
Sales & office	7.6%
Natural resources & construction	14.5%
Production & transportation	3.1%

Employment type

Type	%
Private sector	55.7%
Government	1.6%
Self-employed	42.7%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	75.6%
Carpool	11.3%
Public transit	0.0%
Walk	0.0%
Work from home	11.8%
Other means	1.2%
Avg commute (minutes)	26.9

Poverty

All people 22.6%

Under 18 years 11.2%

18 and over 25.3%

Married-couple families 9.4%

Female-led households 0.0%

Income support

Source	% of households
Social Security	47.6%
Retirement income	16.5%
Supplemental Security	3.7%
Cash public assistance	4.6%
Food stamps / SNAP	12.0%

Health indicators

Condition	%
Obesity	38.4%
High blood pressure	29.6%
High cholesterol	32.8%
Diabetes	9.7%
Heart disease	5.8%
Stroke	2.8%
Asthma	10.5%
Arthritis	22.3%
Kidney disease	2.7%
Pulmonary disease	6.8%
Cancer	5.8%

Behavior / access	%
Smoking	14.7%
Binge drinking	20.3%
No physical activity	20.5%
Less than 7 hrs sleep	35.7%
Depression	19.1%
Fair or poor health	15.2%
Poor mental health	15.5%
Poor physical health	11.0%
No health insurance	12.3%
Visited doctor (checkup)	64.5%
Visited dentist	64.1%
Cholesterol screening	90.5%
Teeth loss	13.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	117	6.8%

Disability	%
Any disability	14.9%
Under 18	0.0%
18–64 years	3.9%
65 and over	57.2%

Health insurance coverage

Type	%
Private insurance	46.4%
Public insurance	47.5%
No insurance	11.9%
Uninsured under 19	22.2%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	2,073	95.2%
Spanish	324	15.6%
Other Indo-European	266	12.8%
Asian & Pacific Islander	0	0.0%
Other languages	58	2.8%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,642	75.4%
Born in same state	1,642	75.4%
Born in different state	1,425	65.5%
Foreign born	0	0.0%
Naturalized citizen	535	24.6%
Not a US citizen	227	42.4%

Ancestry

Ancestry	Count	%
French	139	6.4%
Italian	98	4.5%

Ancestry	Count	%
German	53	2.4%
English	35	1.6%

Technology access

Metric	% of households
Computer access	42.6%
Internet access	95.0%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 92391

What city is ZIP code 92391 in?

ZIP code 92391 is primarily assigned to Twin Peaks, California.

What county is ZIP code 92391 in?

ZIP code 92391 falls within San Bernardino County, California.

What is the poverty rate in ZIP code 92391?

23% of residents in ZIP code 92391 live below the poverty line, above the national average.

Does ZIP code 92391 have a large retiree population?

48% of households in ZIP code 92391 receive Social Security income, suggesting a significant retiree or disability population.

How educated is the population of ZIP code 92391?

11% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

What is the typical home value in ZIP code 92391?

The median home value in ZIP code 92391 is $306,300.

What timezone is ZIP code 92391 in?

ZIP code 92391 observes the PST timezone.