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ZIP CODE TABULATION AREA

91978

California · 10,014 residents · 11.9 sq mi
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With 10,014 people, ZIP 91978 is a ZIP code in San Diego County. The typical home is worth $637,200. Median rent is $2,327 a month. 25% of residents were born outside the United States. The median age is 42.5, about 4 years above the US median. Median household income runs $113,170, well clear of the $82,259 US median. Among the 97 ZIP codes in San Diego County, 91978 ranks 40th by median household income.

$113,170
US average: $82,259
$44,103
US average: $44,673
$637,200
US average: $376,019
31.3%
US average: 35.6%
Land area
11.9 sq mi
Age, sex & households
Under 18
20.3%
Age 65+
18.5%
50.2%
49.8%
3.09 people
Race & ethnicity · 2024
2024
White, non-Hispanic41.5%(4,158)
Black10.2%(1,020)
Hispanic / Latino34.1%(3,417)
Asian6.5%(652)
Other7.7%(767)
86
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Housing
5.6
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Within San Diego County
Income rank vs other ZIPs
LOWEST40TH OF 97HIGHEST
Adjacent ZIPs
91901$114,167
91902$122,524
91905$77,886
91906$62,500
Frequently asked

How many people live in ZIP code 91978?

ZIP code 91978 has about 10,014 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 91978?

The typical household in ZIP code 91978 earns about $113,170 a year. Half of households make more than that, and half make less.

Is ZIP code 91978 expensive?

In ZIP code 91978, the median home is worth about $637,200, and the typical rent is about $2,327 a month.

How educated are people in ZIP code 91978?

About 31.3% of adults age 25 and over in ZIP code 91978 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 91978?

About 10.2% of people in ZIP code 91978 live below the federal poverty line.

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DATA: US CENSUS BUREAU ACS 5-YEAR · ZCTA · UPDATED 2024