🇺🇸 United States ZIP Code

STANDARD

94520

Concord

ZIP Code 94520 is a standard zip code serving Concord, Concord, California (CA), in Contra Costa County, United States. It has an estimated population of 37,208 with a median household income of $47,313. The area falls within the America/Los_Angeles timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: California (CA)
County: Contra Costa
City: Concord
Timezone: America/Los_Angeles

Coordinates

Latitude: 37.982300
Longitude: -122.036200

Geographic Details

Land Area: 10.09 mi²
Population Density: 3688.0 people per mi² (90th percentile)
Bounding Box: 38.032941°N, 37.947090°S, -121.982587°E, -122.069261°W

With 37,208 residents spread across 10.09 square miles, this area has a population density of 3688.0 people per square mile.

Demographics

37,208

Population

90th percentile

$47,313

Median Income

45th percentile

$249,400

Median Home Value

80th percentile

10.09 mi²

Land Area

The median household income in 94520 is $47,313, and the median home value is $249,400.

Housing

13,601

Total Units

12,494

Occupied Units

91.9%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Concord, CA.

94518

Concord

94519

Concord

94521

Concord

94522

Concord

94524

Concord

94527

Concord

94529

Concord

Similar ZIP Codes in California

ZIP codes with similar median household income in California.

91770

Rosemead

$47,373

95315

Delhi

$46,010

92252

Joshua Tree

$42,338

92020

El Cajon

$46,856

90221

Compton

$42,853

92376

Rialto

$44,550

93291

Visalia

$52,546

91945

Lemon Grove

$51,542

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.