🇺🇸 United States ZIP Code

PO BOX

85646

Tubac

ZIP Code 85646 is a po box zip code serving Tubac, Tubac, Arizona (AZ), in Santa Cruz County, United States. It has an estimated population of 1,311 with a median household income of $56,836. The area falls within the America/Phoenix timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Arizona (AZ)
County: Santa Cruz
City: Tubac
Timezone: America/Phoenix

Coordinates

Latitude: 31.612600
Longitude: -111.045900

Geographic Details

Land Area: 128.65 mi²
Water Area: 0.06 mi²
Population Density: 10.0 people per mi² (10th percentile)
Bounding Box: 31.702417°N, 31.485760°S, -110.849191°E, -111.164097°W

With 1,311 residents spread across 128.65 square miles, this area has a population density of 10.0 people per square mile.

Demographics

1,311

Population

30th percentile

$56,836

Median Income

65th percentile

$327,700

Median Home Value

90th percentile

128.65 mi²

Land Area

The median household income in 85646 is $56,836, and the median home value is $327,700.

Housing

1,139

Total Units

680

Occupied Units

59.7%

Occupancy Rate

Similar ZIP Codes in Arizona

ZIP codes with similar median household income in Arizona.

85225

Chandler

$56,414

85373

Sun City

$49,612

85715

Tucson

$53,943

85209

Mesa

$55,136

85367

Yuma

$50,538

85118

Gold Canyon

$62,965

86351

Sedona

$60,118

85251

Scottsdale

$49,111

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.