91942 ZIP Code — La Mesa, CA
San Diego County, California
ZIP code 91942 is located in La Mesa, California, within San Diego County. It covers approximately 5.77 square miles and serves a population of 40,995 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 619.
About ZIP code 91942
The housing stock consists of a significant share of large multi-unit buildings. Most homes were built in the 1950s, giving the area an established character. Median home value is $645,500. Renters make up the majority at 57%, typical of denser urban areas.
Median household income is $80,996.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 26 minutes is near the national average.
Educational attainment is near the national average, with 38% of residents holding a bachelor's degree or higher.
40,995
population
5.77
sq mi land
Standard
ZIP type
Pacific (PT)
timezone
91942 ZIP code map
Cities in ZIP code 91942
Below are the cities the US Postal Service accepts for ZIP code 91942. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| La Mesa | Preferred |
Nearby ZIP codes
92119 San Diego (1.8 mi)
91941 La Mesa (2 mi)
92020 El Cajon (3 mi)
92182 San Diego (3.2 mi)
92120 San Diego (3.4 mi)
92115 San Diego (3.5 mi)
91945 Lemon Grove (3.5 mi)
91977 Spring Valley (4.3 mi)
92124 San Diego (4.9 mi)
92105 San Diego (5.2 mi)
92114 San Diego (5.4 mi)
92071 Santee (6 mi)
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 40,995 |
| Population density | 7,105 / sq mi |
| State FIPS | 06 |
| County FIPS | 073 |
| Geography | |
|---|---|
| Land area | 5.77 sq mi |
| Water area | 0.00 sq mi |
| Latitude | 32.7830 |
| Longitude | -117.0192 |
| Timezone | Pacific (PT) |
| Area code | 619 |
Total population by age
Gender
Race & ethnicity
Economics
updated 05/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 37.1% | 30.1% | 32.6% |
| $50k – $100k | 32.9% | 28.5% | 27.7% |
| $100k – $200k | 23.7% | 28.6% | 26.4% |
| Over $200k | 6.3% | 12.9% | 13.3% |
Demographics & statistics
40,995
Population
7,105
People per sq mi
36.4
Median age
$80,996
Median household income
$43,521
Per capita income
$645,500
Median home value
$1,809
Median monthly rent
43.0%
Home ownership
11.8%
Poverty rate
6.8%
Unemployment
8,486
Housing units
37.6%
Bachelor's or higher
Age distribution
Male
Female
1,380
Under 5
1,568
906
5–9
1,030
1,118
10–14
1,270
883
15–19
1,003
1,263
20–24
1,435
3,612
25–34
4,105
2,909
35–44
3,306
2,097
45–54
2,383
1,019
55–59
1,157
1,030
60–64
1,170
1,549
65–74
1,760
809
75–84
920
615
85+
698
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 8,475 | 20.7% |
| 18 and over | 32,520 | 79.3% |
| 65 and over | 6,351 | 15.5% |
| Median age | 36.4 years | |
Race & ethnicity
White
55.9%
Two or more races
13.5%
Hispanic or Latino
12.7%
Asian
6.5%
Black or African American
6.3%
Other race
4.4%
American Indian / Alaska Native
0.3%
Native Hawaiian / Pacific Islander
0.3%
| Group | Count | % |
|---|---|---|
| White | 26,275 | 55.9% |
| Two or more races | 6,349 | 13.5% |
| Hispanic or Latino | 5,987 | 12.7% |
| Asian | 3,060 | 6.5% |
| Black or African American | 2,951 | 6.3% |
| Other race | 2,061 | 4.4% |
| American Indian / Alaska Native | 156 | 0.3% |
| Native Hawaiian / Pacific Islander | 143 | 0.3% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 37.1% | 30.1% | 32.6% |
| $50k – $100k | 32.9% | 28.5% | 27.7% |
| $100k – $200k | 23.7% | 28.6% | 26.4% |
| Over $200k | 6.3% | 12.9% | 13.3% |
Under $10k
5.4%
$10k–$15k
3.3%
$15k–$25k
7.5%
$25k–$35k
6.5%
$35k–$50k
9.8%
$50k–$75k
14.9%
$75k–$100k
11.9%
$100k–$150k
20.0%
$150k–$200k
10.4%
$200k+
10.2%
| Range | % of households |
|---|---|
| Under $10k | 5.4% |
| $10k–$15k | 3.3% |
| $15k–$25k | 7.5% |
| $25k–$35k | 6.5% |
| $35k–$50k | 9.8% |
| $50k–$75k | 14.9% |
| $75k–$100k | 11.9% |
| $100k–$150k | 20.0% |
| $150k–$200k | 10.4% |
| $200k+ | 10.2% |
| Median income | $80,996 |
Housing
Home values
Under $50k
1.7%
$50k–$100k
0.8%
$100k–$150k
0.3%
$150k–$200k
0.3%
$200k–$300k
1.1%
$300k–$500k
17.8%
$500k–$1M
75.0%
$1M+
3.1%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $645,500 |
| Median rent / month | $1,809 |
| Owner occupied | 43.0% |
| Renter occupied | 57.0% |
| Vacant | 5.5% |
| Single-family detached | 41.1% |
| Large apartment buildings | 27.0% |
| Mobile homes | 1.4% |
| Median rooms | 4.3 |
| Avg household size (owned) | 2.61 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.3% |
| 2010–2019 | 3.2% |
| 2000–2009 | 5.1% |
| 1990–1999 | 5.2% |
| 1980–1989 | 12.7% |
| 1970–1979 | 23.7% |
| 1960–1969 | 15.6% |
| 1950–1959 | 23.8% |
| 1940–1949 | 7.3% |
| 1939 or earlier | 3.2% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 5.8% |
| 1 bedroom | 27.0% |
| 2 bedrooms | 28.5% |
| 3 bedrooms | 29.7% |
| 4 bedrooms | 8.0% |
| 5+ bedrooms | 1.0% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 8.5% |
| 1 vehicle | 38.7% |
| 2 vehicles | 35.6% |
| 3 or more | 17.2% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 44.2% |
| Electricity | 46.0% |
| Propane / LP gas | 1.1% |
| Wood | 0.8% |
| Solar | 2.3% |
| No fuel used | 5.3% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 5,894 | 33.9% |
| Cohabiting couple | 1,479 | 8.5% |
| Male householder, no spouse | 3,725 | 21.4% |
| Female householder, no spouse | 6,270 | 36.1% |
| Households with children under 18 | 4,674 | 26.9% |
| Households with seniors (65+) | 4,694 | 27.0% |
| Average household size | 2.31 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 43.3% | 35.3% |
| Married | 41.0% | 35.4% |
| Separated | 2.2% | 1.7% |
| Widowed | 2.6% | 9.0% |
| Divorced | 10.9% | 18.5% |
Education
Less than 9th grade
3.1%
Some HS, no diploma
3.7%
HS graduate
16.0%
Some college, no degree
27.2%
Associate's degree
12.4%
Bachelor's degree
24.6%
Graduate / professional
12.9%
| Metric | % |
|---|---|
| HS diploma or higher | 93.2% |
| Bachelor's or higher | 37.6% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 633 | 6.7% |
| Kindergarten | 384 | 4.1% |
| Elementary school | 3,401 | 36.1% |
| High school | 1,706 | 18.1% |
| College / grad school | 3,301 | 35.0% |
Employment
Industry of employment
Education & healthcare
24.3%
Professional & management
15.3%
Arts, food & hospitality
11.8%
Retail trade
9.3%
Other services
7.3%
Public administration
7.1%
Manufacturing
6.7%
Transportation & utilities
5.4%
Finance & real estate
5.0%
Construction
4.3%
Information
2.0%
Wholesale trade
1.3%
Agriculture & mining
0.4%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 47.3% |
| Service | 19.0% |
| Sales & office | 18.7% |
| Natural resources & construction | 6.4% |
| Production & transportation | 8.7% |
Employment type
| Type | % |
|---|---|
| Private sector | 72.3% |
| Government | 19.9% |
| Self-employed | 7.8% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 73.9% |
| Carpool | 6.9% |
| Public transit | 2.7% |
| Walk | 1.3% |
| Work from home | 12.7% |
| Other means | 2.4% |
| Avg commute (minutes) | 25.5 |
Poverty
All people
11.8%
Under 18 years
11.7%
18 and over
11.9%
Married-couple families
4.6%
Female-led households
16.7%
Income support
| Source | % of households |
|---|---|
| Social Security | 24.2% |
| Retirement income | 23.1% |
| Supplemental Security | 5.0% |
| Cash public assistance | 3.0% |
| Food stamps / SNAP | 8.5% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 28.1% |
| High blood pressure | 28.4% |
| High cholesterol | 28.8% |
| Diabetes | 8.3% |
| Heart disease | 5.5% |
| Stroke | 2.7% |
| Asthma | 9.6% |
| Arthritis | 21.3% |
| Kidney disease | 2.7% |
| Pulmonary disease | 5.8% |
| Cancer | 6.3% |
| Behavior / access | % |
|---|---|
| Smoking | 11.3% |
| Binge drinking | 19.3% |
| No physical activity | 19.0% |
| Less than 7 hrs sleep | 33.2% |
| Depression | 18.4% |
| Fair or poor health | 13.0% |
| Poor mental health | 14.7% |
| Poor physical health | 9.6% |
| No health insurance | 9.9% |
| Visited doctor (checkup) | 69.9% |
| Visited dentist | 67.9% |
| Cholesterol screening | 90.5% |
| Teeth loss | 10.4% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 2,608 | 8.2% |
| Disability | % |
|---|---|
| Any disability | 12.2% |
| Under 18 | 3.1% |
| 18–64 years | 10.2% |
| 65 and over | 33.7% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 72.1% |
| Public insurance | 33.8% |
| No insurance | 5.6% |
| Uninsured under 19 | 6.1% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 38,047 | 92.8% |
| Spanish | 2,529 | 6.6% |
| Other Indo-European | 1,229 | 3.2% |
| Asian & Pacific Islander | 537 | 1.4% |
| Other languages | 634 | 1.7% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 35,144 | 85.7% |
| Born in same state | 34,398 | 83.9% |
| Born in different state | 23,555 | 57.5% |
| Foreign born | 746 | 1.8% |
| Naturalized citizen | 5,851 | 14.3% |
| Not a US citizen | 3,928 | 67.1% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 4,549 | 11.1% |
| French | 4,357 | 10.6% |
| Arab | 1,097 | 2.7% |
| Polish | 807 | 2% |
| English | 451 | 1.1% |
| Ancestry | Count | % |
|---|---|---|
| German | 362 | 0.9% |
| Dutch | 211 | 0.5% |
| Irish | 126 | 0.3% |
| Norwegian | 98 | 0.2% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 42.4% |
| Internet access | 95.8% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 91942
What city is ZIP code 91942 in?
ZIP code 91942 is primarily assigned to La Mesa, California.
What county is ZIP code 91942 in?
ZIP code 91942 falls within San Diego County, California.
Is ZIP code 91942 mostly rentals?
57% of occupied units in ZIP code 91942 are renter-occupied.
What is the typical home value in ZIP code 91942?
The median home value in ZIP code 91942 is $645,500.
What is the population of ZIP code 91942?
ZIP code 91942 has an estimated population of 40,995 residents, with a density of 7,105 people per square mile.
What is the median household income in ZIP code 91942?
The median household income in ZIP code 91942 is $80,996, above the national median of ~$75,000.
What timezone is ZIP code 91942 in?
ZIP code 91942 observes the PST timezone.