🇺🇸 United States ZIP Code

STANDARD

93401

San Luis Obispo

ZIP Code 93401 is a standard zip code serving San Luis Obispo, San Luis Obispo, California (CA), in San Luis Obispo County, United States. It has an estimated population of 28,033 with a median household income of $52,730. 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 Luis Obispo
City: San Luis Obispo
Timezone: America/Los_Angeles

Coordinates

Latitude: 35.263500
Longitude: -120.650900

Geographic Details

Land Area: 69.94 mi²
Water Area: 0.02 mi²
Population Density: 401.0 people per mi² (70th percentile)
Bounding Box: 35.351800°N, 35.162146°S, -120.524199°E, -120.701578°W

With 28,033 residents spread across 69.94 square miles, this area has a population density of 401.0 people per square mile.

Demographics

28,033

Population

85th percentile

$52,730

Median Income

60th percentile

$545,400

Median Home Value

95th percentile

69.94 mi²

Land Area

The median household income in 93401 is $52,730, and the median home value is $545,400.

Housing

13,378

Total Units

12,499

Occupied Units

93.4%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in San Luis Obispo, CA.

93403

San Luis Obispo

93405

San Luis Obispo

93406

San Luis Obispo

93407

San Luis Obispo

93408

San Luis Obispo

93409

San Luis Obispo

93410

San Luis Obispo

Similar ZIP Codes in California

ZIP codes with similar median household income in California.

91762

Ontario

$51,495

92059

Pala

$55,938

91702

Azusa

$55,495

93117

Goleta

$56,669

95713

Colfax

$60,025

92549

Idyllwild

$58,924

91345

Mission Hills

$60,352

95321

Groveland

$47,321

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.