ZIP Code · TN

ZIP 37721

Part of Corryton, TN

Pop. 14,306·Knox County·11th most expensive ZIP in Tennessee

Median rent (all units)

$2,164/mo

Year-over-Year

Stable

Month-over-Month

+10.0%

vs US Median

+$232

Reported rents

Rising (Monthly)

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Most AffordableMost Expensive

ZIP 37721 · $2,164

More expensive than 69% of US ZIP codes · National median $1,932/mo

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Compare your rent to the local median.

Medians by bedroom

Rent by unit size

Studio

$1,120

1 BR

$1,130

2 BR

$1,380

3 BR

$1,780

4 BR+

$2,080

Research median

$1,380/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: August 17, 2026

From the history

What the numbers show

What a typical income covers

30% of the median household income ($64,892) is $1,622 a month. That covers HUD's Fair Market Rent for up to a 2-bedroom ($1,380); a 3-bedroom is $1,780.

Cheaper nearby

ZIP 37918, 7 miles away, rents for 26% less ($1,596/mo), about $6,800 a year in savings.

From Zillow's monthly rent index (ZORI) for ZIP 37721. Income is the Census median household income (5-year estimates). Fair Market Rents are HUD’s, which include utilities.

Annual cost

$25,968/yr

At $2,164/mo median

Location

CityCorryton

StateTN

CountyKnox County

Rent Market Meter

Strong Landlord's Market

Renter's MarketBalancedLandlord's Market

Rents are up 0.0% year-over-year. Expect competition, and move quickly to lock in terms.

Based on rent-price momentum (+0.0% YoY, +10.0% MoM), not inventory.

Demographics

Who lives here

ZIP 37721 (Corryton, TN) is majority owner-occupied, has a median income below the national average, 17.8% of residents hold a bachelor's degree or higher.

Population

14,306

Median income

$64,892

Median age

43.3

Renters

17.7%

Age distribution

20.9%

18.2%

28.5%

13.4%

19%

Under 1820.9%

18–3418.2%

35–5428.5%

55–6413.4%

65+19%

Gender

50.8%

49.2%

Male50.8%

Female49.2%

Race & ethnicity

93%

White93%

Black1.9%

Hispanic1.2%

Asian0.6%

Other3.3%

Education (25+)

39.8%

32.3%

17.8%

No HS diploma10.1%

HS diploma39.8%

Some college32.3%

Bachelor's+17.8%

Housing tenure

82.3%

17.7%

Owner82.3%

Renter17.7%

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

2021 vs 2026

How ZIP 37721 in Corryton, TN has changed in 5 years

Income

$57,793 → $64,892

up 12.3%

Population

14,163 → 14,306

up 1.0%

Renter share

14% → 17.7%

+3.7 pts

Bachelor's+

15.7% → 17.8%

+2.1 pts

Median age

41.4 → 43.3

+1.9 yrs

Census figures show median household income at $64,892 today, compared with $57,793 five years earlier. Headcount in the area went from 14,163 to 14,306 between 2021 and 2024, a 1.0% change. About 17.7% of households rent today, against 14% in 2021. Educational attainment has shifted as well, with the share of adults holding a bachelor's degree or higher climbed from 15.7% to 17.8%.

Community

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Local insights

Tips for renters in ZIP 37721

About renting in ZIP 37721

Last updated: August 17, 2026

ZIP code 37721 covers Corryton, TN. The median rent here is $2,164/mo as of August 2026. A 1-bedroom rents for a median of $1,130/mo. A 2-bedroom rents for a median of $1,380/mo.

At 40% of local median household income ($64,892/yr), ZIP 37721 ranks as moderate compared to the national benchmark of 30%. Rent prices have stayed steady over the past year.

FAQ

Frequently asked questions

How much income do you need to rent in ZIP 37721?

To keep rent at or below 30% of gross income, you would need to earn at least $87,000/year (about $42/hour full-time) to afford the median rent of $2,164/mo in ZIP 37721. The local median household income is $64,892/yr, so the typical household falls short of that bar.