Zip Code 90240
Downey, California — Los Angeles County
📍 ZIP code 90240 is in Downey, Los Angeles County, California.
ZIP code 90240 is located in Downey, Los Angeles County, California. It is a zip code in the Pacific (PST/PDT) Time Zone with an estimated population of 25,326. The area code for ZIP code 90240 is 310.
Quick Answer
Zip code 90240 is in Downey, California (Los Angeles County). It has a population of 25,326, median household income of $108,860, and median home value of $764,200.
Population
25,326
Income
$108,860
Home Value
$764,200
Climate
86°F / 46°F
About Zip Code 90240
Zip code 90240 is located in Downey, California, within Los Angeles County. Home to approximately 25,326 residents, this area sits at an elevation of 133 ft and falls within the Pacific (PST/PDT) timezone. The local area code is 310.
The median household income is $108,860 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $764,200, and the cost of living index is 206 (106% above the national average of 100).
Summers average a high of 86°F while winters drop to 46°F. The area receives about 16 in of rain annually. The zip code covers 2.9 square miles of land area and 0.1 square miles of water.
Key Statistics
25,326
$108,860
$764,200
Pacific (PST/PDT)
310
133 ft
2.9 sq mi
38.1
8,014
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Compare With Nearby Zip Codes
| Metric | 90240 | 90241 | 90242 | 90660 | 90201 | 90040 |
|---|---|---|---|---|---|---|
| City | Downey, CA | Downey, CA | Downey, CA | El Monte, CA | Bell Gardens, CA | Commerce, CA |
| Population | 25,326 | 45,484 | 40,983 | 60,821 | 93,783 | 11,683 |
| Median Income | $108,860 | $84,375 | $83,238 | $86,956 | $56,824 | $70,909 |
| Home Value | $764,200 | $770,100 | $676,100 | $621,400 | $542,800 | $576,900 |
| Cost of Living | 206 | 195 | 179 | 172 | 138 | 151 |
| Median Age | 38.1 | 35.9 | 37.4 | 39.2 | 32.1 | 37.5 |
Cost of Living
100 = National Average. Downey's cost of living is 106% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
7.0x
Demographics
Zip code 90240 has a population of 25,326 people with a median age of 38.1. There are 8,014 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Downey (90240) population trend from 2010 to 2024
↓ -41.3%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
86°F
46°F
16 in
0 in
Downey experiences warm summers with average highs around 86°F. Winters are mild with lows averaging 46°F. The area receives virtually no snowfall.
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Housing & Economy
Median Home Value
$764,200
Median Household Income
$108,860
With 8,014 housing units across 2.9 square miles, 90240 has a housing density of 2,763 units per square mile. The home price-to-income ratio is 7.0x.
Location & Geography
Latitude
33.9557°
Longitude
-118.1183°
Land Area
2.9 sq mi
Water Area
0.1 sq mi
Nearby Zip Codes
Zip codes closest to 90240 (Downey, CA) with distances:
All Zip Codes in Downey, CA
Other zip codes serving Downey:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 90240's $108,860. A way to compare Downey 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 90240 (Downey, 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 Downey, California?
Downey, California uses zip code 90240 along with 2 other zip codes.
What county is zip code 90240 in?
Zip code 90240 is located in Los Angeles County, California.
What is the population of zip code 90240?
The population of zip code 90240 is 25,326 with a median age of 38.1.
Is 90240 in Downey, California?
Yes, zip code 90240 is in Downey, Los Angeles County, California. The area code is 310.
Frequently Asked Questions
What city is zip code 90240 in?
Zip code 90240 is in Downey, California. It is part of Los Angeles County and uses the Pacific (PST/PDT) timezone.
What is zip code 90240?
Zip code 90240 is a U.S. postal code in Downey, California (Los Angeles County). It has a population of 25,326 and covers 2.9 square miles.
What is the population of zip code 90240?
The population of zip code 90240 (Downey, CA) is 25,326 with a median age of 38.1. There are approximately 8,014 housing units in this area.
What is the median income in zip code 90240?
The median household income in zip code 90240 (Downey, CA) is $108,860 per year. The cost of living index is 206 (100 = national average).
What is the average home price in zip code 90240?
The median home value in zip code 90240 (Downey, CA) is $764,200. The cost of living index is 206 compared to the national average of 100.
What county is zip code 90240 in?
Zip code 90240 is located in Los Angeles County, California. The primary city is Downey.
What is the area code for zip code 90240?
Zip code 90240 in Downey, CA uses area code 310. It is located in the Pacific (PST/PDT) timezone.
Is zip code 90240 a good place to live?
Zip code 90240 (Downey, CA) has a cost of living index of 206 (100 = national average), a median household income of $108,860, and median home values of $764,200. The median age is 38.1. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 90240?
The cost of living index for zip code 90240 (Downey, CA) is 206, where 100 represents the national average. This area is above the national average. Median home value: $764,200.
What schools serve zip code 90240?
Zip code 90240 in Downey, California is served by the local school district of Los Angeles 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.