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County ZIP codes · Tennessee · FIPS 47051

Franklin County, TN ZIP Codes

Franklin County, Tennessee has 14 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 9 of the residential ones lie mainly in Franklin County and 5 mainly in a neighboring county; 9 cross the county line. Median household income ranges from $52,125 in 37318 (Cowan) to $70,952 in 37330 (Estill Springs) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Franklin County?

37306 · Belvidere: $39k37318 · Cowan: $52k37324 · Decherd: $50k37328 · Elora: $65k37330 · Estill Springs: $71k37335 · Flintville: $66k37345 · Huntland: $59k37356 · Monteagle: $59k37375 · Sewanee: $71k37376 · Sherwood: –37380 · South Pittsburg: $59k37383 · Sewanee: –37388 · Tullahoma: $60k37398 · Winchester: $64k3739837380373063738837375373303733537324373763734537328373563731837306 · Belvidere: $39k37318 · Cowan: $52k37324 · Decherd: $50k37328 · Elora: $65k37330 · Estill Springs: $71k37335 · Flintville: $66k37345 · Huntland: $59k37356 · Monteagle: $59k37375 · Sewanee: $71k37376 · Sherwood: –37380 · South Pittsburg: $59k37383 · Sewanee: –37388 · Tullahoma: $60k37398 · Winchester: $64k3739837380373063738837375373303733537324373763734537328373563731837306 · Belvidere: $39k37318 · Cowan: $52k37324 · Decherd: $50k37328 · Elora: $65k37330 · Estill Springs: $71k37335 · Flintville: $66k37345 · Huntland: $59k37356 · Monteagle: $59k37375 · Sewanee: $71k37376 · Sherwood: –37380 · South Pittsburg: $59k37383 · Sewanee: –37388 · Tullahoma: $60k37398 · Winchester: $64k373983738037306373883737537330373353737637345
The residential ZIP codes of Franklin 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 $59,026 and $63,730.

They carry 13 postal town names.

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

All 14 residential ZIP codes in Franklin County

9 ZIP codes lie mainly in Franklin County; 5 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Franklin County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
37398 Winchester 15,755 144 $64k $248k 94%
37330 Estill Springs 7,204 185 $71k $214k 91%
37324 Decherd 5,628 85 $50k $223k 100%
37375 Sewanee 3,866 56 $71k $367k 68%
37345 Huntland 2,659 47 $59k $190k 100%
37318 Cowan 2,103 169 $52k $177k 100%
37306 Belvidere 1,919 16 $39k $223k 91%
37376 Sherwood 361 4 – $214k 100%
37383 Sewanee 344 2,356 – – 100%

Partly in Franklin County

Residential ZIP codes mainly in another county that reach at least 1% into Franklin County, by their share here
In this county
37388 Tullahoma 27,939 237 $60k $250k 34%
37328 Elora 1,930 60 $65k $146k 5%
37335 Flintville 2,527 57 $66k $201k 3%
37380 South Pittsburg 6,688 53 $59k $195k 2%
37356 Monteagle 2,679 109 $59k $298k 1%

Download the 14 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 Franklin County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Franklin County and in the neighboring counties
ZIPIn FranklinElsewhere
3738834%Coffee County 43%; Moore County 20%; Bedford County 3%
3739894%Moore County 6%
3733091%Coffee County 9%
373802%Marion County 98%
3737568%Marion County 32%
373561%Marion County 56%; Grundy County 43%
373353%Lincoln County 97%
373285%Lincoln County 95%
3730691%Moore County 9%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Franklin County starts with 373.

Three-digit prefixes of Franklin 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 Franklin County's
PrefixSectional centerHereAll codes
373 Chattanooga, TN (SCF 373) 14 87

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