84121 ZIP Code Profile, Map, Data & Demographics


ZIP Code 84121: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Salt Lake City, UT 84121

Acceptable Alternative
Brighton, UT 84121
Cottonwd Hts, UT 84121
Cottonwood, UT 84121
Cottonwood Heights, UT 84121
Cottonwood Heights City, UT 84121
Holladay, UT 84121
Holladay Cottonwood, UT 84121
Holladay Ctwd, UT 84121
Murray, UT 84121
Salt Lake Cty, UT 84121
Solitude, UT 84121

Not Acceptable, USPS
Slc, UT 84121

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  • ZIP Code Type: STANDARD
  • County: Salt Lake County
  • Centroid: Latitude 40.622, Longitude -111.824
  • Time Zone: Mountain Time Zone (UTC -7 hours)
  • Observes DST: Yes
  • Businesses Addresses: 985
  • PO Box Addresses: 0
  • Residential Addresses: 16,239
    • Multi-Family Addresses: 1,874
    • Single Family Addresses: 14,365

The ZIP Code maps and database are updated 4 times per year.
Database updated: October 1, 2021, Maps updated: May 5, 2021.


Salt Lake City, UT 84121 Data & Demographics (As of July 1, 2021)


Total Population 42,912 (100%)
Population in Households 42,828 (99.8%)
Population in Families 35,180 (82.0%)
Population in Group Quarters1 84 ( 0.2%)
Population Density 601
Diversity Index2 30


Median Household Income $102,316
Average Household Income $128,918
% of Income for Mortgage4 21%
Per Capita Income $48,982
Wealth Index5 170


Total HU (Housing Units) 17,349 (100%)
Owner Occupied HU 12,041 (69.4%)
Renter Occupied HU 4,262 (24.6%)
Vacant Housing Units 1,046 ( 6.0%)
Median Home Value $502,212
Average Home Value $622,421
Housing Affordability Index3 121


Total Households 16,303
Average Household Size 2.63
Family Households 11,312
Average Family Size 3
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.


2010-2021 2021-2026
Population 0.27% 0.71%
Households 0.38% 0.69%
Families 0.14% 0.65%
Median Household Income   1.92%
Per Capita Income   2.35%
Owner Occupied HU   1.08%

Salt Lake City, UT 84121 - Peer Comparisons by Rank and Percentile

The table below compares 84121 to the other 295 ZIP Codes in Utah by rank and percentile using July 1, 2021 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 23 93rd
Population Density # 70 77th
Median Household Income # 23 93rd
Housing Affordability Index # 113 38th
Per Capita Income # 9 97th
Diversity Index # 144 52nd

Additional comparisons and rankings can be made with a VERY EASY TO USE Utah Census Data Comparison Tool.

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