Smithville is a city in DeKalb County, Tennessee, home to about 5,288 people across 5.8 square miles. Its ZIP code is 37166.
Homes sold for a median of $209 per square foot in the three months ending August 2026, a buyer’s market.
Each card is that ZIP code’s whole market, including any part outside Smithville. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Smithville’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Nashville International Airport (BNA)51 miles away |
|---|---|
| Nearest city of 250,000+ | Nashville-Davidson, TN57 miles away |
| Nearest city of 1 million+ | Chicago, IL420 miles away |
Straight-line distances from the center of Smithville; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Smithville had 5,004 residents in the 2020 census, up 25% since 2000.
It’s the 112th largest of 502 towns in Tennessee by population.
DeKalb County grew from 16,460 residents in 1900 to 20,080 in 2020.
DeKalb County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 88°F in summer, and winter lows average 26°F. About 57 inches of rain and melted snow fall in a typical year, with about 3 inches of snow.
Source: NOAA 1991–2020 climate normals, Smithville 2 Se, TN weather station (about a mile away).
4,323 jobs at 339 businesses in DeKalb County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
60 doctors and other health care providers list an office in Smithville.
Nearest hospitals
Providers with an office here
| Primary care doctors | 9 |
|---|---|
| Specialist doctors | 4 |
| Dentists | 4 |
| Nurse practitioners and physician assistants | 17 |
| Mental health providers | 9 |
| Physical and occupational therapists | 9 |
| Optometrists | 3 |
| Chiropractors | 5 |
| Pharmacies | 10 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Grocery stores
Libraries
Counts are within about 2 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Established in 1838.
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by DeKalb County. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Smithville ElementarySmithville | Pre-K–2 | 535 | Public | 1.5 mi |
| Northside ElementarySmithville | 2–5 | 544 | Public | 2.6 mi |
| DeKalb Middle SchoolSmithville | 6–8 | 534 | Public | 3.9 mi |
| De Kalb County High SchoolSmithville | 9–12 | 781 | Public | 3.8 mi |
| DeKalb County Schools Adult Education Virtual SchoolSmithville | 9–12 | 784 | Public | 2.2 mi |
| De Kalb County Adult High SchoolSmithville | 10–12 | — | Public | 4.0 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Dekalb Christian AcademySmithville | Pre-K–11 | 78 | Pentecostal | 1.5 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.