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County ZIP codes · Tennessee · FIPS 47139

Polk County, TN ZIP Codes

Polk County, Tennessee has 12 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 10 of the residential ones lie mainly in Polk County and 2 mainly in a neighboring county; 6 cross the county line. Median household income ranges from $39,464 in 37391 (Turtletown) to $81,645 in 37310 (Charleston) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Polk County?

37307 · Benton: $74k37309 · Calhoun: $64k37310 · Charleston: $82k37316 · Conasauga: –37317 · Copperhill: $72k37325 · Delano: $66k37326 · Ducktown: –37333 · Farner: $27k37361 · Ocoee: $85k37362 · Old Fort: $52k37369 · Reliance: $59k37391 · Turtletown: $40k3736937310373093731737362373073736137325373333739137307 · Benton: $74k37309 · Calhoun: $64k37310 · Charleston: $82k37316 · Conasauga: –37317 · Copperhill: $72k37325 · Delano: $66k37326 · Ducktown: –37333 · Farner: $27k37361 · Ocoee: $85k37362 · Old Fort: $52k37369 · Reliance: $59k37391 · Turtletown: $40k3736937310373093731737362373073736137325373333739137307 · Benton: $74k37309 · Calhoun: $64k37310 · Charleston: $82k37316 · Conasauga: –37317 · Copperhill: $72k37325 · Delano: $66k37326 · Ducktown: –37333 · Farner: $27k37361 · Ocoee: $85k37362 · Old Fort: $52k37369 · Reliance: $59k37391 · Turtletown: $40k37369373103730937317373623730737361373253733337391
The residential ZIP codes of Polk 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 $52,019 and $72,371.

They carry 12 postal town names.

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

All 12 residential ZIP codes in Polk County

10 ZIP codes lie mainly in Polk County; 2 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Polk County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
37307 Benton 5,302 92 $74k $220k 99%
37362 Old Fort 3,430 51 $52k $123k 79%
37317 Copperhill 2,582 34 $72k $151k 100%
37361 Ocoee 2,166 76 $85k – 100%
37325 Delano 2,007 93 $66k $171k 88%
37391 Turtletown 1,530 60 $40k $213k 100%
37369 Reliance 713 7 $59k $115k 90%
37333 Farner 513 25 $27k $143k 100%
37326 Ducktown 411 232 – $145k 100%
37316 Conasauga no residents 0 – – 100%

Partly in Polk County

Residential ZIP codes mainly in another county that reach at least 1% into Polk County, by their share here
In this county
37309 Calhoun 2,136 54 $64k $173k 12%
37310 Charleston 4,370 102 $82k $271k 11%

Download the 12 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?

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

Share of each ZIP code's land in Polk County and in the neighboring counties
ZIPIn PolkElsewhere
3730799%Bradley County 1%
3731011%Bradley County 89%
3736279%Bradley County 21%
3730912%McMinn County 89%
3732588%McMinn County 12%
3736990%Monroe County 10%

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

Which first three digits do Polk 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 Polk County starts with 373.

Three-digit prefixes of Polk 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 Polk County's
PrefixSectional centerHereAll codes
373 Chattanooga, TN (SCF 373) 12 87

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