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County ZIP codes · Tennessee · FIPS 47159

Smith County, TN ZIP Codes

Smith County, Tennessee has 15 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 9 of the residential ones lie mainly in Smith County and 6 mainly in a neighboring county; 9 cross the county line. Median household income ranges from $49,265 in 37012 (Alexandria) to $84,299 in 37090 (Lebanon) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Smith County?

37012 · Alexandria: $49k37030 · Carthage: $62k37057 · Dixon Springs: $79k37087 · Lebanon: $82k37090 · Lebanon: $84k37145 · Pleasant Shade: $69k37151 · Riddleton: $102k37184 · Watertown: $83k38547 · Brush Creek: $81k38548 · Buffalo Valley: –38552 · Chestnut Mound: $71k38560 · Elmwood: $78k38563 · Gordonsville: $50k38567 · Hickman: $100k38569 · Lancaster: –37090370873703037145371843856037012385633854737057385483715138569385673855237012 · Alexandria: $49k37030 · Carthage: $62k37057 · Dixon Springs: $79k37087 · Lebanon: $82k37090 · Lebanon: $84k37145 · Pleasant Shade: $69k37151 · Riddleton: $102k37184 · Watertown: $83k38547 · Brush Creek: $81k38548 · Buffalo Valley: –38552 · Chestnut Mound: $71k38560 · Elmwood: $78k38563 · Gordonsville: $50k38567 · Hickman: $100k38569 · Lancaster: –37090370873703037145371843856037012385633854737057385483715138569385673855237012 · Alexandria: $49k37030 · Carthage: $62k37057 · Dixon Springs: $79k37087 · Lebanon: $82k37090 · Lebanon: $84k37145 · Pleasant Shade: $69k37151 · Riddleton: $102k37184 · Watertown: $83k38547 · Brush Creek: $81k38548 · Buffalo Valley: –38552 · Chestnut Mound: $71k38560 · Elmwood: $78k38563 · Gordonsville: $50k38567 · Hickman: $100k38569 · Lancaster: –3709037087370303714537184385603701238563385473705738548371513856938567
The residential ZIP codes of Smith County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $50,313 and $82,143.

They carry 14 postal town names.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 15 residential ZIP codes in Smith County

9 ZIP codes lie mainly in Smith County; 6 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Smith County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
37030 Carthage 8,183 126 $62k $253k 100%
37145 Pleasant Shade 2,442 31 $69k $178k 71%
38547 Brush Creek 2,088 67 $81k $244k 100%
38563 Gordonsville 1,826 55 $50k $241k 100%
38560 Elmwood 1,432 43 $78k $241k 100%
38567 Hickman 1,065 51 $100k $341k 88%
38552 Chestnut Mound 472 65 $71k $199k 100%
37151 Riddleton 457 27 $102k $328k 100%
38569 Lancaster 390 29 – $363k 52%

Partly in Smith County

Residential ZIP codes mainly in another county that reach at least 1% into Smith County, by their share here
In this county
38548 Buffalo Valley 1,154 41 – $269k 33%
37057 Dixon Springs 1,016 35 $79k $224k 31%
37012 Alexandria 2,118 57 $49k $238k 20%
37087 Lebanon 56,655 344 $82k $386k 7%
37184 Watertown 7,289 66 $83k $347k 3%
37090 Lebanon 19,774 119 $84k $396k 3%

Download the 15 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

9 ZIP codes of Smith County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Smith County and in the neighboring counties
ZIPIn SmithElsewhere
370877%Wilson County 87%; Trousdale County 6%
370903%Wilson County 96%
371843%Wilson County 97%
3714571%Macon County 19%; Jackson County 10%
3701220%DeKalb County 58%; Wilson County 22%
3854833%Putnam County 64%; DeKalb County 3%
3856788%DeKalb County 12%
3705731%Trousdale County 38%; Macon County 31%
3856952%DeKalb County 48%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

Which first three digits do Smith County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Smith County's ZIP codes use 3 prefixes: 370, 371 and 385.

Three-digit prefixes of Smith County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Smith County's
PrefixSectional centerHereAll codes
370 Nashville, TN (SCF 370) 5 77
371 Nashville, TN (SCF 370) 3 57
385 Nashville, TN (SCF 370) 7 49

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.