Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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zipcodes.pro — STATE/TN/COUNTY/KNOX

Knox County, TN ZIP codes

There are 35 ZIP codes in Knox County, TN, in 5 towns, from 37721 to 37998. The largest are 37918 (Knoxville), 37922 (Knoxville) and 37920 (Knoxville).

The county seat is Knoxville.

ZIP codes
35
Towns
5
County seat
Knoxville
County FIPS
47093
Population
494,148
Median household income
$74,222
Land area
508 sq mi
Area code
865
Metro area
Knoxville

Knox County ZIP codes by town

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

Map of Knox County ZIP codes

3772137806378493787137901379023790937912379143791537916379173791837919379203792137922379233792437927379283792937930379313793237933379343793837939379403795037995379963799737998

The ZIP codes of Knox County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Knox County in numbers

About 494,148 people live in Knox County, in 201,146 households, the 3rd most populous of Tennessee's 95 counties. The median household income is $74,222 a year, 7% above the Tennessee median of $69,595 (US: $80,734). The median owner-occupied home is valued at $320,900 (12% above the Tennessee median), and median gross rent is $1,261 a month. The median age is 37.4; 41.0% of adults 25 and over hold a bachelor's degree or higher (31.1% across Tennessee); the average commute takes 22 minutes.

Population494,148Knox494,148
Households201,146Knox201,146
Median age37.4Knox37.4Tennessee38.9US 38.9
Median household income$74,222Knox$74,222Tennessee$69,595US $80,734
Median home value$320,900Knox$320,900Tennessee$286,700US $332,700
Median gross rent$1,261Knox$1,261Tennessee$1,189US $1,413
Bachelor's degree or higher41.0%Knox41.0%Tennessee31.1%US 35.7%
Mean commute22.2 minKnox22.2 minTennessee25.7 minUS 26.4 min
Population density972 / sq miKnox972 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Knox County

Largest towns in Knox County
TownZIP codesPopulation
Knoxville 31 195,185
Corryton 1 14,306
Powell 1 13,739
Mascot 1 3,277
Strawberry Plains 1 2,669

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Knox County.

Not sure you are in Knox County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Knox County, with figures

ZIP codes in Knox County
ZIP City Type Population Median income Median home
37721 Corryton , TN Standard 14,306 $64,892 $233,300
37806 Mascot , TN Standard 3,674 $59,605 $221,400
37849 Powell , TN Standard 29,375 $84,275 $290,900
37871 Strawberry Plains , TN Standard 9,926 $70,938 $210,700
37901 Knoxville , TN No street area — — —
37902 Knoxville , TN Standard 2,412 $50,161 $687,500
37909 Knoxville , TN Standard 16,774 $66,984 $312,500
37912 Knoxville , TN Standard 21,505 $47,416 $210,900
37914 Knoxville , TN Standard 21,478 $59,856 $218,300
37915 Knoxville , TN Standard 5,991 $26,379 $210,800
37916 Knoxville , TN Standard 15,583 $14,925 $269,800
37917 Knoxville , TN Standard 24,615 $54,423 $219,200
37918 Knoxville , TN Standard 45,971 $69,752 $274,900
37919 Knoxville , TN Standard 31,754 $72,645 $526,800
37920 Knoxville , TN Standard 44,995 $66,362 $267,600
37921 Knoxville , TN Standard 28,717 $60,013 $226,300
37922 Knoxville , TN Standard 40,394 $132,807 $523,800
37923 Knoxville , TN Standard 30,131 $73,699 $333,000
37924 Knoxville , TN Standard 14,420 $80,112 $251,200
37927 Knoxville , TN No street area — — —
37928 Knoxville , TN No street area — — —
37929 Knoxville , TN Standard 0 — —
37930 Knoxville , TN No street area — — —
37931 Knoxville , TN Standard 31,842 $92,150 $359,600
37932 Knoxville , TN Standard 25,424 $119,703 $463,100
37933 Knoxville , TN No street area — — —
37934 Knoxville , TN Standard 28,272 $132,264 $529,100
37938 Knoxville , TN Standard 17,437 $84,135 $322,500
37939 Knoxville , TN No street area — — —
37940 Knoxville , TN No street area — — —
37950 Knoxville , TN No street area — — —
37995 Knoxville , TN No street area — — —
37996 Knoxville , TN No street area — — —
37997 Knoxville , TN No street area — — —
37998 Knoxville , TN No street area — — —

Cite this page

zipcodes.pro. “Knox County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/tn/county/knox

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