🇺🇸 United States ZIP Code

STANDARD

91977

Spring Valley

ZIP Code 91977 is a standard zip code serving Spring Valley, Spring Valley, California (CA), in San Diego County, United States. It has an estimated population of 58,368 with a median household income of $59,849. The area falls within the America/Los_Angeles timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: California (CA)
County: San Diego
City: Spring Valley
Timezone: America/Los_Angeles

Coordinates

Latitude: 32.724000
Longitude: -116.997600

Geographic Details

Land Area: 9.67 mi²
Population Density: 6039.0 people per mi² (95th percentile)
Bounding Box: 32.758867°N, 32.688098°S, -116.962476°E, -117.025233°W

With 58,368 residents spread across 9.67 square miles, this area has a population density of 6039.0 people per square mile.

Demographics

58,368

Population

95th percentile

$59,849

Median Income

70th percentile

$296,400

Median Home Value

85th percentile

9.67 mi²

Land Area

The median household income in 91977 is $59,849, and the median home value is $296,400.

Housing

19,167

Total Units

18,190

Occupied Units

94.9%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Spring Valley, CA.

91976

Spring Valley

91978

Spring Valley

91979

Spring Valley

Similar ZIP Codes in California

ZIP codes with similar median household income in California.

94063

Redwood City

$52,818

94608

Emeryville

$52,787

90604

Whittier

$65,570

94544

Hayward

$60,448

95695

Woodland

$51,158

95403

Santa Rosa

$60,394

93927

Greenfield

$52,642

92392

Victorville

$58,667

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.