ZIP Code · TN

ZIP 37166

Part of Smithville, TN

Pop. 15,731·Dekalb County·111th most expensive ZIP in Tennessee

Median rent (all units)

$1,400/mo

Year-over-Year

Stable

Month-over-Month

+6.1%

vs US Median

-$532

Reported rents

Rising (Monthly)

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Most AffordableMost Expensive

ZIP 37166 · $1,400

More affordable than 79% of US ZIP codes · National median $1,932/mo

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Medians by bedroom

Rent by unit size

Studio

$1,150

1 BR

$1,170

2 BR

$1,320

3 BR

$1,660

4 BR+

$2,020

Research median

$1,320/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: May 18, 2026

From the history

What the numbers show

What a typical income covers

30% of the median household income ($52,797) is $1,320 a month. That covers HUD's Fair Market Rent for up to a 2-bedroom ($1,320); a 3-bedroom is $1,660.

From Zillow's monthly rent index (ZORI) for ZIP 37166. Income is the Census median household income (5-year estimates). Fair Market Rents are HUD’s, which include utilities.

Annual cost

$16,800/yr

At $1,400/mo median

Location

CitySmithville

StateTN

CountyDekalb 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, +6.1% MoM), not inventory.

Demographics

Who lives here

ZIP 37166 (Smithville, TN) is majority owner-occupied, has a median income below the national average, 20.1% of residents hold a bachelor's degree or higher.

Population

15,731

Median income

$52,797

Median age

41.2

Renters

28.2%

Age distribution

23.9%

19.9%

26.4%

13.3%

16.4%

Under 1823.9%

18–3419.9%

35–5426.4%

55–6413.3%

65+16.4%

Gender

49.2%

50.8%

Male49.2%

Female50.8%

Race & ethnicity

86.3%

White86.3%

Black1.5%

Hispanic10.1%

Asian1.4%

Other0.7%

Education (25+)

16.6%

38.7%

24.7%

20.1%

No HS diploma16.6%

HS diploma38.7%

Some college24.7%

Bachelor's+20.1%

Housing tenure

71.8%

28.2%

Owner71.8%

Renter28.2%

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

2021 vs 2026

How ZIP 37166 in Smithville, TN has changed in 5 years

Income

$45,046 → $52,797

up 17.2%

Population

14,108 → 15,731

up 11.5%

Renter share

34.6% → 28.2%

-6.4 pts

Bachelor's+

18.5% → 20.1%

+1.6 pts

Median age

43.2 → 41.2

-2.0 yrs

Median household income climbed from $45,046 to $52,797 between 2021 and 2024, a 17.2% shift. Census counts show ZIP 37166 in Smithville, TN adding about 1,623 residents over the five-year window, up 11.5% on net. The renter share has eased from 34.6% to 28.2%, with owner-occupied housing accounting for the remainder.

Community

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Local insights

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About renting in ZIP 37166

Last updated: May 18, 2026

ZIP code 37166 covers Smithville, TN. The median rent here is $1,400/mo as of May 2026. A 1-bedroom rents for a median of $1,170/mo. A 2-bedroom rents for a median of $1,320/mo.

At 32% of local median household income ($52,797/yr), ZIP 37166 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 37166?

To keep rent at or below 30% of gross income, you would need to earn at least $56,000/year (about $27/hour full-time) to afford the median rent of $1,400/mo in ZIP 37166. The local median household income is $52,797/yr, so the typical household falls short of that bar.