94021 ZIP Code — Loma Mar, CA

San Mateo County, California

ZIP code 94021 is located in Loma Mar, California, within San Mateo County. It covers approximately 10.95 square miles and serves a population of 123 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 650.

123

population

10.95

sq mi land

Standard

ZIP type

Pacific (PT)

timezone

94021 ZIP code map

Cities in ZIP code 94021

Below are the cities the US Postal Service accepts for ZIP code 94021. Using any city not on this list may result in mail delivery delays.

City	Status
Loma Mar	Preferred

Nearby ZIP codes

94020 La Honda (2.7 mi) 94060 Pescadero (5.2 mi) 94074 San Gregorio (5.9 mi) 95006 Boulder Creek (8.6 mi) 94028 Portola Valley (8.6 mi) 95014 Cupertino (9.9 mi) 94022 Los Altos (10.2 mi) 94062 Redwood City (11 mi) 94024 Los Altos (11.1 mi) 95070 Saratoga (11.8 mi) 94304 Palo Alto (11.9 mi) 94305 Stanford (13.1 mi)

Demographics updated 06/2026

Population
Total population	123
Population density	11 / sq mi
State FIPS	06
County FIPS	081

Geography
Land area	10.95 sq mi
Water area	0.00 sq mi
Latitude	37.2516
Longitude	-122.2657
Timezone	Pacific (PT)
Area code	650

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	8.0%	18.4%	32.6%
$50k – $100k	0.0%	20.5%	27.7%
$100k – $200k	29.2%	30.5%	26.4%
Over $200k	62.8%	30.6%	13.3%

Demographics & statistics

123

Population

People per sq mi

45.0

Median age

$201,950

Median household income

$160,867

Per capita income

Median home value

Median monthly rent

41.0%

Home ownership

0.0%

Poverty rate

0.0%

Unemployment

Housing units

43.8%

Bachelor's or higher

Age distribution

Male Female

10–14

35–44

45–54

55–59

65–74

← Male

Female →

Age summary

Group	Count	%
Under 18	34	27.6%
18 and over	89	72.4%
65 and over	25	20.3%
Median age	45.0 years

Race & ethnicity

White 100%

Group	Count	%
White	123	100%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	8.0%	18.4%	32.6%
$50k – $100k	0.0%	20.5%	27.7%
$100k – $200k	29.2%	30.5%	26.4%
Over $200k	62.8%	30.6%	13.3%

$150k–$200k 18.0%

$200k+ 82.0%

Range	% of households
$150k–$200k	18.0%
$200k+	82.0%
Median income	$201,950

Housing

Home values

$500k–$1M 100.0%

Housing overview

Metric	Value
Median home value	$0
Median rent / month	$0
Owner occupied	41.0%
Renter occupied	59.0%
Vacant	16.4%
Single-family detached	100.0%
Large apartment buildings	0.0%
Mobile homes	0.0%
Median rooms	3.5
Avg household size (owned)	0.00

Year built

Era	%
2020 or later	0.0%
2010–2019	0.0%
2000–2009	0.0%
1990–1999	0.0%
1980–1989	0.0%
1970–1979	34.2%
1960–1969	0.0%
1950–1959	0.0%
1940–1949	34.2%
1939 or earlier	31.5%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	65.8%
2 bedrooms	0.0%
3 bedrooms	34.2%
4 bedrooms	0.0%
5+ bedrooms	0.0%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	18.0%
2 vehicles	82.0%
3 or more	0.0%

Heating fuel

Fuel type	%
Utility gas	41.0%
Wood	59.0%

Households & families

Household type	Count	%
Married-couple family	25	41.0%
Cohabiting couple	0	0.0%
Male householder, no spouse	0	0.0%
Female householder, no spouse	36	59.0%
Households with children under 18	25	41.0%
Households with seniors (65+)	25	41.0%
Average household size	2.02

Marital status

Status	Male	Female
Never married	0.0%	18.0%
Married	100.0%	41.0%
Separated	0.0%	0.0%
Widowed	0.0%	0.0%
Divorced	0.0%	41.0%

Education

Less than 9th grade 0.0%

Some HS, no diploma 0.0%

HS graduate 0.0%

Some college, no degree 56.2%

Associate's degree 0.0%

Bachelor's degree 31.5%

Graduate / professional 12.4%

Metric	%
HS diploma or higher	100.0%
Bachelor's or higher	43.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	0	0.0%
Elementary school	34	100.0%
High school	0	0.0%
College / grad school	0	0.0%

Employment

Industry of employment

Professional & management 31.5%

Finance & real estate 28.1%

Arts, food & hospitality 28.1%

Education & healthcare 12.4%

Occupation

Category	%
Management, business & arts	100.0%
Service	0.0%
Sales & office	0.0%
Natural resources & construction	0.0%
Production & transportation	0.0%

Employment type

Type	%
Private sector	100.0%
Government	0.0%
Self-employed	0.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	71.9%
Carpool	28.1%
Public transit	0.0%
Walk	0.0%
Work from home	0.0%
Other means	0.0%
Avg commute (minutes)	0.0

Poverty

All people 0.0%

Under 18 years 0.0%

18 and over 0.0%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	41.0%
Retirement income	0.0%
Supplemental Security	0.0%
Cash public assistance	0.0%
Food stamps / SNAP	0.0%

Health indicators

Condition	%
Obesity	23.8%
High blood pressure	21.8%
High cholesterol	28.7%
Diabetes	6.3%
Heart disease	3.9%
Stroke	1.8%
Asthma	9.7%
Arthritis	17.1%
Kidney disease	1.9%
Pulmonary disease	4.6%
Cancer	5.2%

Behavior / access	%
Smoking	10.8%
Binge drinking	21.5%
No physical activity	13.9%
Less than 7 hrs sleep	28.6%
Depression	18.3%
Fair or poor health	9.7%
Poor mental health	14.4%
Poor physical health	7.8%
No health insurance	8.2%
Visited doctor (checkup)	64.0%
Visited dentist	72.7%
Cholesterol screening	91.3%
Teeth loss	7.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	0	0.0%

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

Health insurance coverage

Type	%
Private insurance	100.0%
Public insurance	20.3%
No insurance	0.0%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	123	100.0%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	123	100.0%
Born in same state	123	100.0%
Born in different state	73	59.3%
Foreign born	0	0.0%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
French	36	29.3%

Ancestry	Count	%
Italian	25	20.3%

Technology access

Metric	% of households
Computer access	49.6%
Internet access	100.0%

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

Frequently asked questions about ZIP code 94021

What city is ZIP code 94021 in?

ZIP code 94021 is primarily assigned to Loma Mar, California.

What county is ZIP code 94021 in?

ZIP code 94021 falls within San Mateo County, California.

Is ZIP code 94021 mostly rentals?

59% of occupied units in ZIP code 94021 are renter-occupied.

Does ZIP code 94021 have a large retiree population?

41% of households in ZIP code 94021 receive Social Security income, suggesting a significant retiree or disability population.

What is the median household income in ZIP code 94021?

The median household income in ZIP code 94021 is $201,950, above the national median of ~$75,000.

What is the population of ZIP code 94021?

ZIP code 94021 has an estimated population of 123 residents, with a density of 11 people per square mile.

What timezone is ZIP code 94021 in?

ZIP code 94021 observes the PST timezone.