ZIP Code · UT

ZIP 84121

Part of Cottonwood Heights, UT

Pop. 38,912·Salt Lake County·32nd most expensive ZIP in Utah

Median rent (all units)

$1,814/mo

Year-over-Year

-1.1%

Month-over-Month

-0.7%

vs US Median

-$118

Reported rents

Falling (Monthly)

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Most AffordableMost Expensive

ZIP 84121 · $1,814

More expensive than 50% of US ZIP codes · National median $1,932/mo

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Medians by bedroom

Rent by unit size

Studio

$1,460

1 BR

$1,680

2 BR

$2,020

3 BR

$2,700

4 BR+

$3,080

Research median

$2,020/mo

Bedroom estimates are gross rents that include essential utilities (electricity, water, gas, sewer, trash).

Rent trends

12-month history

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Last updated: October 17, 2026

From the history

What the numbers show

Cheapest month to sign

February. Asking rents in ZIP 84121 usually run 1.7% below trend in February and 1.8% above it in October, about $63 a month apart at today's median. Based on 5 years of data.

Compared with the peak

Rent in ZIP 84121 is 2.6% below its high of $1,862 in November 2025, at $1,814 as of September 2026.

Past year vs. the rest of Utah

Rent in ZIP 84121 changed -1.1% over the year to September 2026. Across the 66 Utah ZIP codes Zillow tracks, the typical change was +1.3%.

Recent direction

Rent has fallen 4 months in a row, and rose in 5 of the last 12 months.

What a typical income covers

30% of the median household income ($115,515) is $2,888 a month. That covers HUD's Fair Market Rent for up to a 3-bedroom ($2,700); a 4-bedroom is $3,080.

Cheaper nearby

ZIP 84117, 10 miles away, rents for 13% less ($1,580/mo), about $2,800 a year in savings.

From Zillow's monthly rent index (ZORI) for ZIP 84121. The seasonal pattern compares Zillow’s seasonally adjusted and unadjusted series. Income is the Census median household income (5-year estimates). Fair Market Rents are HUD’s, which include utilities.

Annual cost

$21,768/yr

At $1,814/mo median

Location

CityCottonwood Heights

StateUT

CountySalt Lake County

Rent Market Meter

Renter's Market

Renter's MarketBalancedLandlord's Market

Rents are softening (down 1.1% YoY), so renters have negotiating leverage.

Based on rent-price momentum (-1.1% YoY, -0.7% MoM), not inventory.

Demographics

Who lives here

ZIP 84121 (Cottonwood Heights, UT) is majority owner-occupied, has a large retiree population, has a median income above the national average, 53.2% of residents hold a bachelor's degree or higher.

Population

38,912

Median income

$115,515

Median age

41.1

Renters

25.1%

Age distribution

20.6%

25%

13.3%

20.6%

Under 1820.6%

18–3420.6%

35–5425%

55–6413.3%

65+20.6%

Gender

50.1%

49.9%

Male50.1%

Female49.9%

Race & ethnicity

85.9%

White85.9%

Black0.8%

Hispanic6.7%

Asian3.8%

Other2.8%

Education (25+)

14.2%

29.7%

53.2%

No HS diploma3%

HS diploma14.2%

Some college29.7%

Bachelor's+53.2%

Housing tenure

74.9%

25.1%

Owner74.9%

Renter25.1%

Source: U.S. Census Bureau · ACS 2024 5-Year Estimates

2021 vs 2026

How ZIP 84121 in Cottonwood Heights, UT has changed in 5 years

Rent

$1,467 → $1,814

up 23.7%

Income

$101,636 → $115,515

up 13.7%

Population

40,151 → 38,912

down 3.1%

Renter share

25.6% → 25.1%

-0.5 pts

Bachelor's+

52.9% → 53.2%

+0.3 pts

Rent in ZIP 84121 in Cottonwood Heights, UT has climbed 23.7% since 2021, going from about $1,467 per month to roughly $1,814 today. Census figures show median household income at $115,515 today, compared with $101,636 five years earlier. Rent outpaced income growth by roughly 10.0 percentage points, which means renters are spending a larger slice of each paycheck on housing than they did in 2021. Headcount in the area went from 40,151 to 38,912 between 2021 and 2024, a 3.1% change. The combined trend lines point to a market that has changed measurably from where it stood in early 2021.

Community

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Local insights

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About renting in ZIP 84121

Last updated: October 17, 2026

ZIP code 84121 covers Cottonwood Heights, UT. The median rent here is $1,814/mo as of October 2026. A 1-bedroom rents for a median of $1,680/mo. A 2-bedroom rents for a median of $2,020/mo.

At 19% of local median household income ($115,515/yr), ZIP 84121 ranks as affordable compared to the national benchmark of 30%. Rents have decreased 1.1% over the past year.

FAQ

Frequently asked questions

How much income do you need to rent in ZIP 84121?

To keep rent at or below 30% of gross income, you would need to earn at least $73,000/year (about $35/hour full-time) to afford the median rent of $1,814/mo in ZIP 84121. The local median household income is $115,515/yr, so the typical household meets that bar.

Is rent going up or down in ZIP 84121?

Rent in ZIP 84121 has fallen 1.1% over the past year as of September 2026. It sits 2.6% below its high of $1,862 in November 2025.

When is the cheapest time to rent in ZIP 84121?

Asking rents in ZIP 84121 are usually lowest in February, about 1.7% below their yearly trend, and highest in October, about 1.8% above it. At today's median that is a gap of roughly $63 a month. This pattern comes from 5 years of Zillow rent data.

How does ZIP 84121 compare to other ZIPs in Utah?

ZIP 84121 is in the middle among Utah ZIP codes for rent, ranking #32 of 79 at $1,814/mo. Over the year to September 2026, rent in ZIP 84121 changed -1.1%, against a typical +1.3% across the 66 Utah ZIP codes Zillow tracks.