🇺🇸 United States ZIP Code

STANDARD

84123

Salt Lake City

ZIP Code 84123 is a standard zip code serving Salt Lake City, Salt Lake City, Utah (UT), in Salt Lake County, United States. It has an estimated population of 37,900 with a median household income of $49,950. The area falls within the America/Denver timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Utah (UT)
County: Salt Lake
City: Salt Lake City
Timezone: America/Denver

Coordinates

Latitude: 40.659600
Longitude: -111.919300

Geographic Details

Land Area: 8.22 mi²
Population Density: 4610.0 people per mi² (90th percentile)
Bounding Box: 40.694365°N, 40.626269°S, -111.900469°E, -111.948188°W

With 37,900 residents spread across 8.22 square miles, this area has a population density of 4610.0 people per square mile.

Demographics

37,900

Population

90th percentile

$49,950

Median Income

50th percentile

$202,300

Median Home Value

75th percentile

8.22 mi²

Land Area

The median household income in 84123 is $49,950, and the median home value is $202,300.

Housing

14,770

Total Units

14,098

Occupied Units

95.5%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Salt Lake City, UT.

84101

Salt Lake City

84102

Salt Lake City

84103

Salt Lake City

84104

Salt Lake City

84105

Salt Lake City

84106

Salt Lake City

84107

Salt Lake City

84108

Salt Lake City

84109

Salt Lake City

84110

Salt Lake City

Similar ZIP Codes in Utah

ZIP codes with similar median household income in Utah.

84528

Huntington

$53,000

84033

Henefer

$55,577

84340

Willard

$56,094

84761

Parowan

$42,829

84633

Goshen

$49,250

84747

Loa

$49,076

84041

Layton

$56,395

84513

Castle Dale

$49,439

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.