🇺🇸 United States ZIP Code

STANDARD

83251

Mackay

ZIP Code 83251 is a standard zip code serving Mackay, Mackay, Idaho (ID), in Custer County, United States. It has an estimated population of 1,097 with a median household income of $47,273. The area falls within the America/Boise timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Idaho (ID)
County: Custer
City: Mackay
Timezone: America/Boise

Coordinates

Latitude: 43.911100
Longitude: -113.612000

Geographic Details

Land Area: 960.76 mi²
Water Area: 2.85 mi²
Population Density: 1.0 people per mi²
Bounding Box: 44.273035°N, 43.645291°S, -113.443811°E, -114.417336°W

With 1,097 residents spread across 960.76 square miles, this area has a population density of 1.0 people per square mile.

Demographics

1,097

Population

25th percentile

$47,273

Median Income

45th percentile

$168,400

Median Home Value

65th percentile

960.76 mi²

Land Area

The median household income in 83251 is $47,273, and the median home value is $168,400.

Housing

782

Total Units

481

Occupied Units

61.5%

Occupancy Rate

Similar ZIP Codes in Idaho

ZIP codes with similar median household income in Idaho.

83687

Nampa

$42,899

83429

Island Park

$52,500

83686

Nampa

$46,709

83703

Boise

$49,388

83241

Grace

$45,341

83350

Rupert

$42,711

83341

Kimberly

$50,412

83833

Harrison

$46,447

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.