🇺🇸 United States ZIP Code

PO BOX

85531

Central

ZIP Code 85531 is a po box zip code serving Central, Central, Arizona (AZ), in Graham County, United States. It has an estimated population of 623 with a median household income of $53,523. The area falls within the America/Phoenix timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Arizona (AZ)
County: Graham
City: Central
Timezone: America/Phoenix

Coordinates

Latitude: 32.869200
Longitude: -109.787800

Geographic Details

Land Area: 4.18 mi²
Water Area: 0.13 mi²
Population Density: 149.0 people per mi² (55th percentile)
Bounding Box: 32.901235°N, 32.851255°S, -109.765545°E, -109.811710°W

With 623 residents spread across 4.18 square miles, this area has a population density of 149.0 people per square mile.

Demographics

623

Population

15th percentile

$53,523

Median Income

60th percentile

$219,800

Median Home Value

75th percentile

4.18 mi²

Land Area

The median household income in 85531 is $53,523, and the median home value is $219,800.

Housing

204

Total Units

185

Occupied Units

90.7%

Occupancy Rate

Similar ZIP Codes in Arizona

ZIP codes with similar median household income in Arizona.

85012

Phoenix

$49,226

85016

Phoenix

$46,233

85018

Phoenix

$52,389

85020

Phoenix

$46,037

85022

Phoenix

$45,606

85023

Phoenix

$47,200

85027

Phoenix

$51,919

85032

Phoenix

$48,461

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.