84121 ZIP Code — Salt Lake City, UT

Salt Lake County, Utah

ZIP code 84121 is located in Salt Lake City, Utah, within Salt Lake County. It covers approximately 64.45 square miles and serves a population of 39,759 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 801/385.

About ZIP code 84121

The housing stock consists of a mix of housing types. Most homes were built in the 1970s, giving the area an established character. Median home value is $533,000. Owner-occupancy sits near the national average at 75%.

The gap between median ($108,873) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 7% is below the national average. 30% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 22 minutes is near the national average. Remote work is prevalent — 20% of workers work from home.

Educational attainment is high — 54% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 84121 reflects a community defined by a highly educated population, a high rate of remote workers, and a significant Social Security-dependent population.

39,759

population

64.45

sq mi land

Standard

ZIP type

Mountain (MT)

timezone

84121 ZIP code map

Cities in ZIP code 84121

Below are the cities the US Postal Service accepts for ZIP code 84121. Using any city not on this list may result in mail delivery delays.

City	Status
Salt Lake City	Acceptable
Salt Lake City	Acceptable
Salt Lake City	Preferred

Nearby ZIP codes

84124 Salt Lake City (4.3 mi) 84092 Sandy (6.1 mi) 84093 Sandy (6.3 mi) 84109 Salt Lake City (7.1 mi) 84117 Salt Lake City (7.2 mi) 84094 Sandy (8.7 mi) 84047 Midvale (9.2 mi) 84107 Salt Lake City (9.6 mi) 84106 Salt Lake City (9.8 mi) 84070 Sandy (10.1 mi) 84070 Sandy (10.1 mi) 84098 Park City (10.1 mi)

Demographics updated 05/2026

Population
Total population	39,759
Population density	617 / sq mi
State FIPS	49
County FIPS	035

Geography
Land area	64.45 sq mi
Water area	0.16 sq mi
Latitude	40.6166
Longitude	-111.7095
Timezone	Mountain (MT)
Area code	801/385

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	24.1%	29.7%	31.5%
$50k – $100k	28.0%	33.5%	34.6%
$100k – $200k	34.4%	28.3%	27.0%
Over $200k	13.5%	8.5%	7.0%

Demographics & statistics

39,759

Population

617

People per sq mi

40.4

Median age

$108,873

Median household income

$54,019

Per capita income

$533,000

Median home value

$1,632

Median monthly rent

75.0%

Home ownership

7.2%

Poverty rate

2.9%

Unemployment

12,865

Housing units

53.7%

Bachelor's or higher

Age distribution

Male Female

1,142

Under 5

1,174

1,095

5–9

1,125

1,220

10–14

1,254

1,126

15–19

1,157

1,135

20–24

1,166

2,567

25–34

2,638

2,670

35–44

2,744

2,277

45–54

2,340

1,268

55–59

1,303

1,412

60–64

1,451

2,066

65–74

2,123

1,044

75–84

1,073

586

85+

603

← Male

Female →

Age summary

Group	Count	%
Under 18	8,382	21.1%
18 and over	31,377	78.9%
65 and over	7,495	18.9%
Median age	40.4 years

Race & ethnicity

White 85.4%

Two or more races 4.4%

Hispanic or Latino 3.6%

Asian 3%

Other race 1.9%

Black or African American 0.8%

Native Hawaiian / Pacific Islander 0.5%

American Indian / Alaska Native 0.3%

Group	Count	%
White	35,239	85.4%
Two or more races	1,824	4.4%
Hispanic or Latino	1,489	3.6%
Asian	1,230	3%
Other race	775	1.9%
Black or African American	337	0.8%
Native Hawaiian / Pacific Islander	220	0.5%
American Indian / Alaska Native	134	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	24.1%	29.7%	31.5%
$50k – $100k	28.0%	33.5%	34.6%
$100k – $200k	34.4%	28.3%	27.0%
Over $200k	13.5%	8.5%	7.0%

Under $10k 3.0%

$10k–$15k 2.1%

$15k–$25k 4.3%

$25k–$35k 4.1%

$35k–$50k 7.1%

$50k–$75k 14.5%

$75k–$100k 11.8%

$100k–$150k 20.5%

$150k–$200k 14.5%

$200k+ 18.2%

Range	% of households
Under $10k	3.0%
$10k–$15k	2.1%
$15k–$25k	4.3%
$25k–$35k	4.1%
$35k–$50k	7.1%
$50k–$75k	14.5%
$75k–$100k	11.8%
$100k–$150k	20.5%
$150k–$200k	14.5%
$200k+	18.2%
Median income	$108,873

Housing

Home values

Under $50k 2.2%

$50k–$100k 0.1%

$100k–$150k 1.1%

$150k–$200k 1.2%

$200k–$300k 5.9%

$300k–$500k 35.1%

$500k–$1M 46.0%

$1M+ 8.3%

Housing overview

Metric	Value
Median home value	$533,000
Median rent / month	$1,632
Owner occupied	75.0%
Renter occupied	25.0%
Vacant	8.5%
Single-family detached	68.3%
Large apartment buildings	7.0%
Mobile homes	0.9%
Median rooms	7.2
Avg household size (owned)	2.64

Year built

Era	%
2020 or later	0.7%
2010–2019	5.4%
2000–2009	8.9%
1990–1999	13.7%
1980–1989	12.9%
1970–1979	32.5%
1960–1969	13.7%
1950–1959	10.4%
1940–1949	0.9%
1939 or earlier	0.8%

Bedrooms

Size	% of units
No bedroom (studio)	2.0%
1 bedroom	5.8%
2 bedrooms	16.0%
3 bedrooms	28.1%
4 bedrooms	26.9%
5+ bedrooms	21.1%

Vehicles per household

Vehicles	% of households
No vehicle	2.2%
1 vehicle	26.2%
2 vehicles	42.7%
3 or more	28.9%

Heating fuel

Fuel type	%
Utility gas	86.4%
Electricity	11.9%
Propane / LP gas	1.0%
Fuel oil	0.1%
Wood	0.1%
No fuel used	0.3%

Households & families

Household type	Count	%
Married-couple family	8,471	55.5%
Cohabiting couple	774	5.1%
Male householder, no spouse	2,300	15.1%
Female householder, no spouse	3,723	24.4%
Households with children under 18	4,268	28.0%
Households with seniors (65+)	5,127	33.6%
Average household size	2.59

Marital status

Status	Male	Female
Never married	31.0%	23.7%
Married	57.1%	54.0%
Separated	0.6%	2.0%
Widowed	1.8%	6.9%
Divorced	9.5%	13.5%

Education

Less than 9th grade 0.6%

Some HS, no diploma 2.1%

HS graduate 14.2%

Some college, no degree 22.5%

Associate's degree 6.9%

Bachelor's degree 33.8%

Graduate / professional 19.9%

Metric	%
HS diploma or higher	97.3%
Bachelor's or higher	53.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	316	3.3%
Kindergarten	376	4.0%
Elementary school	3,764	39.7%
High school	2,140	22.5%
College / grad school	2,896	30.5%

Employment

Industry of employment

Education & healthcare 25.0%

Professional & management 16.0%

Finance & real estate 10.2%

Retail trade 10.1%

Arts, food & hospitality 9.1%

Manufacturing 8.3%

Construction 6.1%

Transportation & utilities 4.2%

Other services 3.2%

Wholesale trade 3.0%

Public administration 3.0%

Information 1.2%

Agriculture & mining 0.6%

Occupation

Category	%
Management, business & arts	55.2%
Service	10.4%
Sales & office	20.0%
Natural resources & construction	5.4%
Production & transportation	9.1%

Employment type

Type	%
Private sector	80.3%
Government	13.2%
Self-employed	6.5%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	67.5%
Carpool	8.5%
Public transit	0.7%
Walk	0.9%
Work from home	20.3%
Other means	2.0%
Avg commute (minutes)	21.9

Poverty

All people 7.2%

Under 18 years 7.4%

18 and over 7.1%

Married-couple families 4.6%

Female-led households 6.3%

Income support

Source	% of households
Social Security	30.1%
Retirement income	23.8%
Supplemental Security	2.4%
Cash public assistance	1.2%
Food stamps / SNAP	3.6%

Health indicators

Condition	%
Obesity	27.2%
High blood pressure	27.6%
High cholesterol	30.6%
Diabetes	8.7%
Heart disease	5.2%
Stroke	2.4%
Asthma	10.4%
Arthritis	22.1%
Kidney disease	2.5%
Pulmonary disease	4.3%
Cancer	6.8%

Behavior / access	%
Smoking	7.5%
Binge drinking	13.2%
No physical activity	14.3%
Less than 7 hrs sleep	27.8%
Depression	23.7%
Fair or poor health	9.1%
Poor mental health	13.7%
Poor physical health	7.7%
No health insurance	9.2%
Visited doctor (checkup)	71.6%
Visited dentist	76.8%
Cholesterol screening	88.6%
Teeth loss	7.4%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,337	4.3%

Disability	%
Any disability	10.3%
Under 18	3.7%
18–64 years	7.8%
65 and over	25.9%

Health insurance coverage

Type	%
Private insurance	81.0%
Public insurance	25.7%
No insurance	5.5%
Uninsured under 19	3.2%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	37,443	94.2%
Spanish	758	2.0%
Other Indo-European	297	0.8%
Asian & Pacific Islander	247	0.7%
Other languages	158	0.4%

Place of birth & citizenship

Origin	Count	%
Native born (US)	37,025	93.1%
Born in same state	36,616	92.1%
Born in different state	22,299	56.1%
Foreign born	409	1.0%
Naturalized citizen	2,734	6.9%
Not a US citizen	1,796	65.7%

Ancestry

Ancestry	Count	%
French	10,441	26.3%
Italian	2,612	6.6%
Dutch	1,908	4.8%
Arab	1,426	3.6%
Polish	1,353	3.4%

Ancestry	Count	%
English	799	2%
Irish	132	0.3%
Norwegian	95	0.2%
German	84	0.2%

Technology access

Metric	% of households
Computer access	38.4%
Internet access	98.1%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 84121

What city is ZIP code 84121 in?

ZIP code 84121 is primarily assigned to Salt Lake City, Utah.

What county is ZIP code 84121 in?

ZIP code 84121 falls within Salt Lake County, Utah.

How educated is the population of ZIP code 84121?

54% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

What is the typical home value in ZIP code 84121?

The median home value in ZIP code 84121 is $533,000.

What is the median household income in ZIP code 84121?

The median household income in ZIP code 84121 is $108,873, above the national median of ~$75,000.

What is the population of ZIP code 84121?

ZIP code 84121 has an estimated population of 39,759 residents, with a density of 617 people per square mile.

What timezone is ZIP code 84121 in?

ZIP code 84121 observes the MST timezone.