🇺🇸 United States ZIP Code

STANDARD

91942

La Mesa

ZIP Code 91942 is a standard zip code serving La Mesa, La Mesa, California (CA), in San Diego County, United States. It has an estimated population of 38,069 with a median household income of $51,694. The area falls within the America/Los_Angeles timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: California (CA)
County: San Diego
City: La Mesa
Timezone: America/Los_Angeles

Coordinates

Latitude: 32.783500
Longitude: -117.018900

Geographic Details

Land Area: 5.84 mi²
Water Area: 0.03 mi²
Population Density: 6524.0 people per mi² (95th percentile)
Bounding Box: 32.796543°N, 32.754132°S, -116.984360°E, -117.053762°W

With 38,069 residents spread across 5.84 square miles, this area has a population density of 6524.0 people per square mile.

Demographics

38,069

Population

90th percentile

$51,694

Median Income

55th percentile

$344,600

Median Home Value

90th percentile

5.84 mi²

Land Area

The median household income in 91942 is $51,694, and the median home value is $344,600.

Housing

18,285

Total Units

16,998

Occupied Units

93.0%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in La Mesa, CA.

91941

La Mesa

91943

La Mesa

91944

La Mesa

Similar ZIP Codes in California

ZIP codes with similar median household income in California.

90670

Santa Fe Springs

$55,525

91746

La Puente

$59,016

95640

Ione

$58,309

90810

Long Beach

$49,269

93657

Sanger

$47,781

96103

Blairsden Graeagle

$58,090

91101

Pasadena

$56,980

91801

Alhambra

$53,027

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.