ZIP Code · TN

ZIP 37921

Part of Knoxville, TN

Pop. 28,717·Knox County·56th most expensive ZIP in Tennessee

Median rent (all units)

$1,688/mo

Year-over-Year

+4.9%

Month-over-Month

+1.4%

vs US Median

-$244

Reported rents

Rising (Monthly)

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Most AffordableMost Expensive

ZIP 37921 · $1,688

More affordable than 59% of US ZIP codes · National median $1,932/mo

Rent check

Is your rent fair?

Compare your rent to the local median.

Medians by bedroom

Rent by unit size

Studio

$1,220

1 BR

$1,230

2 BR

$1,530

3 BR

$1,940

4 BR+

$2,260

Research median

$1,530/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

Compared with the peak

Rent in ZIP 37921 is at its highest level since Zillow's records here began in January 2023.

Past year vs. the rest of Tennessee

Rent in ZIP 37921 changed +4.9% over the year to September 2026. Across the 127 Tennessee ZIP codes Zillow tracks, the typical change was +1.8%.

Recent direction

Rent rose in 7 of the last 12 months.

What a typical income covers

30% of the median household income ($60,013) is $1,500 a month. That covers HUD's Fair Market Rent for up to a 1-bedroom ($1,230); a 2-bedroom is $1,530.

Rank in Knoxville

8th cheapest of 14 ZIP codes in Knoxville.

Cheaper nearby

ZIP 37912, 2 miles away, rents for 26% less ($1,257/mo), about $5,200 a year in savings.

From Zillow's monthly rent index (ZORI) for ZIP 37921. Income is the Census median household income (5-year estimates). Fair Market Rents are HUD’s, which include utilities.

Annual cost

$20,256/yr

At $1,688/mo median

Location

CityKnoxville

StateTN

CountyKnox County

Rent Market Meter

Strong Landlord's Market

Renter's MarketBalancedLandlord's Market

Rents are up 4.9% year-over-year. Expect competition, and move quickly to lock in terms.

Based on rent-price momentum (+4.9% YoY, +1.4% MoM), not inventory.

Demographics

Who lives here

ZIP 37921 (Knoxville, TN) is majority owner-occupied, has a median income below the national average, 26.3% of residents hold a bachelor's degree or higher.

Population

28,717

Median income

$60,013

Median age

34.6

Renters

40.2%

Age distribution

23.3%

27.4%

25.6%

12.9%

Under 1823.3%

18–3427.4%

35–5425.6%

55–6410.7%

65+12.9%

Gender

47.4%

52.6%

Male47.4%

Female52.6%

Race & ethnicity

64.3%

20.1%

White64.3%

Black20.1%

Hispanic10.4%

Asian0.9%

Other4.2%

Education (25+)

14.1%

29.8%

26.3%

No HS diploma14.1%

HS diploma29.8%

Some college29.8%

Bachelor's+26.3%

Housing tenure

59.8%

40.2%

Owner59.8%

Renter40.2%

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

2023 vs 2026

How ZIP 37921 in Knoxville, TN has changed in 5 years

Rent

$1,484 → $1,688

up 13.7%

Income

$53,000 → $60,013

up 13.2%

Population

28,397 → 28,717

up 1.1%

Renter share

37.3% → 40.2%

+2.9 pts

Bachelor's+

27.7% → 26.3%

-1.4 pts

Compared with 2023, rent in ZIP 37921 in Knoxville, TN has increased by $204 per month, settling near $1,688 after starting the period at $1,484. Local incomes tracked alongside that move, going from a median of $53,000 in 2021 to $60,013 more recently. Headcount in the area went from 28,397 to 28,717 between 2021 and 2024, a 1.1% change. About 40.2% of households rent today, against 37.3% in 2021. These shifts give renters and would-be renters a longer baseline for sizing up today's listings against the ZIP 37921 in Knoxville, TN market of 2023.

Community

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Local insights

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About renting in ZIP 37921

Last updated: October 17, 2026

ZIP code 37921 covers Knoxville, TN. The median rent here is $1,688/mo as of October 2026. A 1-bedroom rents for a median of $1,230/mo. A 2-bedroom rents for a median of $1,530/mo.

At 34% of local median household income ($60,013/yr), ZIP 37921 ranks as moderate compared to the national benchmark of 30%. Rents have increased 4.9% over the past year.

FAQ

Frequently asked questions

How much income do you need to rent in ZIP 37921?

To keep rent at or below 30% of gross income, you would need to earn at least $68,000/year (about $33/hour full-time) to afford the median rent of $1,688/mo in ZIP 37921. The local median household income is $60,013/yr, so the typical household falls short of that bar.

Is rent going up or down in ZIP 37921?

Rent in ZIP 37921 has risen 4.9% over the past year as of September 2026. That is the highest level since Zillow's records here began in January 2023.

How does ZIP 37921 compare to other ZIPs in Tennessee?

ZIP 37921 is in the middle among Tennessee ZIP codes for rent, ranking #56 of 147 at $1,688/mo. Over the year to September 2026, rent in ZIP 37921 changed +4.9%, against a typical +1.8% across the 127 Tennessee ZIP codes Zillow tracks.