Residential delivery area · California
ZIP Code 92040: Lakeside, CA
ZIP code 92040 uses the postal name Lakeside, California and lies entirely in San Diego County (Census 2020 ZIP-county file). About 46,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $107,937 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Lakeside (8%), Eucalyptus Hills (7%) and Winter Gardens (5%), and 3% in smaller places; 77% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Lakeside · its only residential ZIP
- County
- San Diego County
- Census places
- Lakeside (8%) census-designated place; Eucalyptus Hills (7%) census-designated place; Winter Gardens (5%) census-designated place
- Metro area
- San Diego-Chula Vista-Carlsbad, CA
- House district
- CA-48 119th Congress
- State
- California
- Time zone
- Pacific
- Land area
- 67.2 sq mi · 688 people per sq mi
Where is ZIP code 92040?
92040 centers on 32.909°, -116.892° and covers 67.2 square miles of land plus 1.5 of water. It borders 5 ZIP codes: 92021, 92071, 92064, 92131, 92065.
The map draws ZIP code areas only. For the streets inside 92040, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 92040 compare with the rest of San Diego County?
| Measure | 92040 | In San Diego County | In CA |
|---|---|---|---|
| People (ACS 2020-2024) | 46,216 | 35th of 116 | 283rd of 1,802 |
| Median household income | $108k | 44th of 85 | 471st of 1,189 |
| Median home value | $723k | 65th of 89 | 653rd of 1,317 |
Its median household income is higher than in 86% of U.S. residential ZIP codes, and it is denser than 75% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 92040?
The 2020 Census counted 43,640 people in 92040; the ACS, which samples households over 2020-2024, estimates 46,216. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 46,216
- 2020 Census count
- 43,640
- Households
- 15,426
- Median age
- 39.0
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 92040?
Of the 46,216 people the ACS estimates in 92040, 23.4% are under 18 and 16.0% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (66.8%), then Hispanic or Latino (22.8%).
- Under 1823.4%
- 18 to 6460.7%
- 65 and older16.0%
- White, not Hispanic66.8%
- Hispanic or Latino22.8%
- Other or two or more6.5%
- Asian, not Hispanic2.5%
- Black, not Hispanic1.3%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 92040 earn?
Median household income is $107,937 (ACS 2020-2024), the 44th highest of the 85 ranked ZIP codes in San Diego County.
- Median household income
- $107,937
- Income per person
- $43,896
- Below the poverty line
- 8.5%
- Unemployed (of the labor force)
- 6.4%
- Adults 25+ with a bachelor's degree
- 27.0%
- Adjusted gross income per tax return, 2022
- $82,46520,820 returns; wages 71% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 92040?
FHFA's house price index for 92040, built from repeat sales and appraisals of the same homes, rose 93% from 2015 to 2025 and rose 50% from 2020 to 2025, and moved +0.7% in 2025.
- Median home value (owners' estimate)
- $723,200
- Median gross rent
- $1,960
- Homes owned by their occupants
- 67.7%
- Housing units
- 16,106
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 92040?
821 business establishments had a location in this ZIP code in 2023, 83 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction266
- Other services (except public administration)89
- Professional, scientific, and technical services73
- Retail trade60
- Administrative and support and waste management and remediation services55
- Health care and social assistance52
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 92040?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 92021 | El Cajon | 70,501 | $74k | 5.2 mi |
| 92071 | Santee | 59,590 | $114k | 7.2 mi |
| 92064 | Poway | 48,683 | $149k | 8.8 mi |
| 92131 | San Diego | 35,503 | $185k | 9.0 mi |
| 92065 | Ramona | 36,752 | $125k | 9.8 mi |
| 92020 | El Cajon | 57,842 | $76k | 9.0 mi (near) |
| 92019 | El Cajon | 45,351 | $102k | 9.1 mi (near) |
| 92119 | San Diego | 24,456 | $113k | 10.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.