Zip Code 92021
El Cajon, California — San Diego County
📍 ZIP code 92021 is in El Cajon, San Diego County, California.
ZIP code 92021 is located in El Cajon, San Diego County, California. It is a zip code in the Pacific (PST/PDT) Time Zone with an estimated population of 69,306. The area code for ZIP code 92021 is 619.
Quick Answer
Zip code 92021 is in El Cajon, California (San Diego County). It has a population of 69,306, median household income of $69,979, and median home value of $572,000.
Population
69,306
Income
$69,979
Home Value
$572,000
Climate
86°F / 43°F
About Zip Code 92021
Zip code 92021 is located in El Cajon, California, within San Diego County. Home to approximately 69,306 residents, this area sits at an elevation of 850 ft and falls within the Pacific (PST/PDT) timezone. The local area code is 619.
The median household income is $69,979 per year, which is below the national median of $70,784. Homes in this zip code have a median value of $572,000, and the cost of living index is 153 (53% above the national average of 100).
Summers average a high of 86°F while winters drop to 43°F. The area receives about 12 in of rain annually. The zip code covers 29.7 square miles of land area and 0.2 square miles of water.
Key Statistics
69,306
$69,979
$572,000
Pacific (PST/PDT)
619
850 ft
29.7 sq mi
36
23,360
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Compare With Nearby Zip Codes
| Metric | 92021 | 92019 | 92040 | 92020 | 92071 | 91978 |
|---|---|---|---|---|---|---|
| City | El Cajon, CA | El Cajon, CA | Lakeside, CA | El Cajon, CA | Santee, CA | Spring Valley, CA |
| Population | 69,306 | 45,801 | 45,978 | 58,490 | 59,739 | 10,511 |
| Median Income | $69,979 | $99,266 | $103,585 | $72,822 | $105,603 | $111,506 |
| Home Value | $572,000 | $727,400 | $648,800 | $741,600 | $654,800 | $597,300 |
| Cost of Living | 153 | 195 | 183 | 183 | 184 | 164 |
| Median Age | 36 | 40.1 | 39.1 | 36.3 | 39.5 | 38.4 |
Cost of Living
100 = National Average. El Cajon's cost of living is 53% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
8.2x
Demographics
Zip code 92021 has a population of 69,306 people with a median age of 36. There are 23,360 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
El Cajon (92021) population trend from 2010 to 2024
↑ 120.5%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
86°F
43°F
12 in
0 in
El Cajon experiences warm summers with average highs around 86°F. Winters are mild with lows averaging 43°F. The area receives virtually no snowfall.
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Housing & Economy
Median Home Value
$572,000
Median Household Income
$69,979
With 23,360 housing units across 29.7 square miles, 92021 has a housing density of 787 units per square mile. The home price-to-income ratio is 8.2x.
Location & Geography
Latitude
32.8388°
Longitude
-116.8700°
Land Area
29.7 sq mi
Water Area
0.2 sq mi
Nearby Zip Codes
Zip codes closest to 92021 (El Cajon, CA) with distances:
All Zip Codes in El Cajon, CA
Other zip codes serving El Cajon:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 92021's $69,979. A way to compare El Cajon to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 92021 (El Cajon, CA). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is El Cajon, California?
El Cajon, California uses zip code 92021 along with 2 other zip codes.
What county is zip code 92021 in?
Zip code 92021 is located in San Diego County, California.
What is the population of zip code 92021?
The population of zip code 92021 is 69,306 with a median age of 36.
Is 92021 in El Cajon, California?
Yes, zip code 92021 is in El Cajon, San Diego County, California. The area code is 619.
Frequently Asked Questions
What city is zip code 92021 in?
Zip code 92021 is in El Cajon, California. It is part of San Diego County and uses the Pacific (PST/PDT) timezone.
What is zip code 92021?
Zip code 92021 is a U.S. postal code in El Cajon, California (San Diego County). It has a population of 69,306 and covers 29.7 square miles.
What is the population of zip code 92021?
The population of zip code 92021 (El Cajon, CA) is 69,306 with a median age of 36. There are approximately 23,360 housing units in this area.
What is the median income in zip code 92021?
The median household income in zip code 92021 (El Cajon, CA) is $69,979 per year. The cost of living index is 153 (100 = national average).
What is the average home price in zip code 92021?
The median home value in zip code 92021 (El Cajon, CA) is $572,000. The cost of living index is 153 compared to the national average of 100.
What county is zip code 92021 in?
Zip code 92021 is located in San Diego County, California. The primary city is El Cajon.
What is the area code for zip code 92021?
Zip code 92021 in El Cajon, CA uses area code 619. It is located in the Pacific (PST/PDT) timezone.
Is zip code 92021 a good place to live?
Zip code 92021 (El Cajon, CA) has a cost of living index of 153 (100 = national average), a median household income of $69,979, and median home values of $572,000. The median age is 36. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 92021?
The cost of living index for zip code 92021 (El Cajon, CA) is 153, where 100 represents the national average. This area is above the national average. Median home value: $572,000.
What schools serve zip code 92021?
Zip code 92021 in El Cajon, California is served by the local school district of San Diego County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.