🇺🇸 United States ZIP Code

STANDARD

93257

Porterville

ZIP Code 93257 is a standard zip code serving Porterville, Porterville, California (CA), in Tulare County, United States. It has an estimated population of 75,004 with a median household income of $40,851. The area falls within the America/Los_Angeles timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: California (CA)
County: Tulare
City: Porterville
Timezone: America/Los_Angeles

Coordinates

Latitude: 36.068600
Longitude: -119.031500

Geographic Details

Land Area: 445.00 mi²
Water Area: 4.18 mi²
Population Density: 169.0 people per mi² (60th percentile)
Bounding Box: 36.138405°N, 35.790164°S, -118.562429°E, -119.214631°W

With 75,004 residents spread across 445.00 square miles, this area has a population density of 169.0 people per square mile.

Demographics

75,004

Population

95th percentile

$40,851

Median Income

30th percentile

$148,400

Median Home Value

55th percentile

445.00 mi²

Land Area

The median household income in 93257 is $40,851, and the median home value is $148,400.

Housing

22,985

Total Units

21,431

Occupied Units

93.2%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Porterville, CA.

93258

Porterville

Similar ZIP Codes in California

ZIP codes with similar median household income in California.

93662

Selma

$43,790

93239

Kettleman City

$41,912

94603

Oakland

$40,927

95945

Grass Valley

$42,828

96035

Gerber

$42,150

91906

Campo

$46,875

90250

Hawthorne

$45,995

95204

Stockton

$44,809

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.