Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/CA/LAKESIDE-2

Lakeside ZIP codes, California

No ZIP code is named for Lakeside, CA; addresses there use a neighbouring town's name. 2 ZIP codes cover it: 92021 and 92040. Its area codes are 619 and 858.

USPS city name
0 ZIP codes
Overlapping the city
2 more
Population
22,447
Area codes
619, 858

NANPA lists no telephone rate centre for Lakeside itself, so these are the area codes of the nearest one, El Cajon (0.0 miles). A town on an area-code boundary can differ from its neighbour.

Lakeside in numbers

About 22,447 people live in Lakeside, in 7,288 households. The median household income is $96,447 a year, about the same as the California median of $99,122 (US: $80,734). The median owner-occupied home is valued at $634,400 (14% below the California median), and median gross rent is $2,016 a month. The median age is 38.7; 26.1% of adults 25 and over hold a bachelor's degree or higher (37.1% across California); the average commute takes 26 minutes.

Population22,447Lakeside22,447
Households7,288Lakeside7,288
Median age38.7Lakeside38.7California37.9US 38.9
Median household income$96,447Lakeside$96,447California$99,122US $80,734
Median home value$634,400Lakeside$634,400California$734,700US $332,700
Median gross rent$2,016Lakeside$2,016California$2,036US $1,413
Bachelor's degree or higher26.1%Lakeside26.1%California37.1%US 35.7%
Mean commute25.6 minLakeside25.6 minCalifornia28.7 minUS 26.4 min
Population density3,240 / sq miLakeside3,240 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Lakeside CDP. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes covering Lakeside

These ZIP codes cover part of Lakeside but are addressed as somewhere else.

ZIP codes overlapping Lakeside
ZIP City Type Population Median income Median home
92021 El Cajon , CA Standard 70,501 $74,013 $611,900
92040 Lakeside , CA Standard 46,216 $107,937 $723,200

Map of Lakeside ZIP codes

9202192040

The ZIP codes of Lakeside, CA, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Lakeside

The nearest larger towns are Santee (59,332 people, 4.8 mi), El Cajon (104,449 people, 5.0 mi) and La Mesa (60,797 people, 9.1 mi).

Towns near Lakeside
TownPopulationDistance
Winter Gardens 22,131 1.8 mi
Eucalyptus Hills 5,840 3.1 mi
Bostonia 16,765 3.4 mi
Granite Hills 3,795 3.7 mi
Harbison Canyon 4,328 4.3 mi
Crest 2,775 4.5 mi
Santee 59,332 4.8 mi
El Cajon 104,449 5.0 mi
Rancho San Diego 21,272 6.6 mi
Casa de Oro-Mount Helix 19,765 7.4 mi
Alpine 15,180 8.7 mi
La Mesa 60,797 9.1 mi
Spring Valley 31,969 9.7 mi
Jamul 6,574 9.7 mi

More nearby: every ZIP code in San Diego County · California ZIP codes

Cite this page

zipcodes.pro. “Lakeside, CA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ca/lakeside-2

Underlying data is public domain or openly licensed — sources, vintages and licences.