Zip Code 92040
Lakeside, California — San Diego County
📍 ZIP code 92040 is in Lakeside, San Diego County, California.
ZIP code 92040 is located in Lakeside, San Diego County, California. It is a zip code in the Pacific (PST/PDT) Time Zone with an estimated population of 45,978. The area code for ZIP code 92040 is 619.
Quick Answer
Zip code 92040 is in Lakeside, California (San Diego County). It has a population of 45,978, median household income of $103,585, and median home value of $648,800.
Population
45,978
Income
$103,585
Home Value
$648,800
Climate
86°F / 43°F
About Zip Code 92040
Zip code 92040 is located in Lakeside, California, within San Diego County. Home to approximately 45,978 residents, this area sits at an elevation of 1590 ft and falls within the Pacific (PST/PDT) timezone. The local area code is 619.
The median household income is $103,585 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $648,800, and the cost of living index is 183 (83% 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 64.3 square miles of land area and 2.4 square miles of water.
Key Statistics
45,978
$103,585
$648,800
Pacific (PST/PDT)
619
1590 ft
64.3 sq mi
39.1
16,147
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Compare With Nearby Zip Codes
| Metric | 92040 | 92021 | 92071 | 92019 | 92064 | 92020 |
|---|---|---|---|---|---|---|
| City | Lakeside, CA | El Cajon, CA | Santee, CA | El Cajon, CA | Poway, CA | El Cajon, CA |
| Population | 45,978 | 69,306 | 59,739 | 45,801 | 48,555 | 58,490 |
| Median Income | $103,585 | $69,979 | $105,603 | $99,266 | $144,201 | $72,822 |
| Home Value | $648,800 | $572,000 | $654,800 | $727,400 | $971,600 | $741,600 |
| Cost of Living | 183 | 153 | 184 | 195 | 250 | 183 |
| Median Age | 39.1 | 36 | 39.5 | 40.1 | 41.9 | 36.3 |
Cost of Living
100 = National Average. Lakeside's cost of living is 83% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
6.3x
Demographics
Zip code 92040 has a population of 45,978 people with a median age of 39.1. There are 16,147 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Lakeside (92040) population trend from 2010 to 2024
↓ -11.2%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
86°F
43°F
12 in
0 in
Lakeside 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
$648,800
Median Household Income
$103,585
With 16,147 housing units across 64.3 square miles, 92040 has a housing density of 251 units per square mile. The home price-to-income ratio is 6.3x.
Location & Geography
Latitude
32.9089°
Longitude
-116.8920°
Land Area
64.3 sq mi
Water Area
2.4 sq mi
Nearby Zip Codes
Zip codes closest to 92040 (Lakeside, CA) with distances:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 92040's $103,585. A way to compare Lakeside 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 92040 (Lakeside, 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 Lakeside, California?
Lakeside, California uses zip code 92040.
What county is zip code 92040 in?
Zip code 92040 is located in San Diego County, California.
What is the population of zip code 92040?
The population of zip code 92040 is 45,978 with a median age of 39.1.
Is 92040 in Lakeside, California?
Yes, zip code 92040 is in Lakeside, San Diego County, California. The area code is 619.
Frequently Asked Questions
What city is zip code 92040 in?
Zip code 92040 is in Lakeside, California. It is part of San Diego County and uses the Pacific (PST/PDT) timezone.
What is zip code 92040?
Zip code 92040 is a U.S. postal code in Lakeside, California (San Diego County). It has a population of 45,978 and covers 64.3 square miles.
What is the population of zip code 92040?
The population of zip code 92040 (Lakeside, CA) is 45,978 with a median age of 39.1. There are approximately 16,147 housing units in this area.
What is the median income in zip code 92040?
The median household income in zip code 92040 (Lakeside, CA) is $103,585 per year. The cost of living index is 183 (100 = national average).
What is the average home price in zip code 92040?
The median home value in zip code 92040 (Lakeside, CA) is $648,800. The cost of living index is 183 compared to the national average of 100.
What county is zip code 92040 in?
Zip code 92040 is located in San Diego County, California. The primary city is Lakeside.
What is the area code for zip code 92040?
Zip code 92040 in Lakeside, CA uses area code 619. It is located in the Pacific (PST/PDT) timezone.
Is zip code 92040 a good place to live?
Zip code 92040 (Lakeside, CA) has a cost of living index of 183 (100 = national average), a median household income of $103,585, and median home values of $648,800. The median age is 39.1. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 92040?
The cost of living index for zip code 92040 (Lakeside, CA) is 183, where 100 represents the national average. This area is above the national average. Median home value: $648,800.
What schools serve zip code 92040?
Zip code 92040 in Lakeside, 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.