| ZIP Codes: | 35 ZIP Codes (23 Standard, 8 PO Box, 4 Unique) [See All] |
| Area Code: | 865 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:47 PM |
| Population: | 499,281 [See All] |
| FIPS: | 47093 |
| CBSA: | Knoxville, TN |
| Land Area: | 556 sq mi |
| Water Area: | 18 sq mi |
| Coordinates: | 35.9782, -83.9634 |
| Quick Link: |
499,281 residents live across 35 ZIPs covering 556 sq mi, served by 6 distinct USPS-recognized cities.
Population moved from 446,628 to 499,281 from 2014 to 2024 — a +11.8% change. 19 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 37922 (Knoxville, $132,807 median) and poorest ZIP 37916 (Knoxville, $14,925) are 10.6 miles apart — a 8.9× income gap across local geography.
Median home values vary 3.5× across this county — from $195,900 in 37754 (Heiskell) to $687,500 in 37902 (Knoxville).
Density varies 273× across the county — from 110 people/sq mi in 37754 (Heiskell) to 30,066 in 37916 (Knoxville).
Most of the decade's growth concentrated around Knoxville — top growth ZIPs averaged +46.7% over the past ten years ( 37932 , 37924 and 37806 ).
Educational attainment ranges from 16.9% bachelor's+ in 37915 (Knoxville) to 69.2% in 37922 (Knoxville) — the breadth of educational profiles across the area.
Within Tennessee, this is the #3 most populous of 95 counties and ranks #18 for median household income with the #17 fastest decade growth .
Hosts 4 single-entity Unique ZIPs: 37996University Of Tenn ; 37998Johnson Bible College ; 37997Suntrust Bank ; and 37995First Tenn National Bank .
Weighted by population, the typical household earns about $78,852 across the county — reflecting what a typical resident sees, not a simple ZIP average.
40.8% of adults age 25+ hold a bachelor's degree or higher (136,824 of 335,518 reporting). The most-educated ZIPs cluster around Knoxville.
23 Standard delivery, 8 PO Box only, 4 single-entity Unique ZIPs serve this county.
2 ZIPs in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
4 ZIP codes in this county serve a single facility — typically theme parks, universities, large corporations, airports, or government complexes.
Median household income spans 8.9× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 37918 | Knoxville | Standard | 45,971 | $69,752 | 34.0 | 2.8% |
| 37920 | Knoxville | Standard | 44,995 | $66,362 | 74.4 | 17.3% |
| 37922 | Knoxville | Standard | 40,394 | $132,807 | 35.1 | 18.3% |
| 37931 | Knoxville | Standard | 31,842 | $92,150 | 29.4 | 19.3% |
| 37919 | Knoxville | Standard | 31,754 | $72,645 | 21.6 | 10.8% |
| 37923 | Knoxville | Standard | 30,131 | $73,699 | 10.3 | 7.1% |
| 37849 | Powell | Standard | 29,375 | $84,275 | 40.0 | 8.0% |
| 37921 | Knoxville | Standard | 28,717 | $60,013 | 16.1 | 0.8% |
| 37934 | Farragut | Standard | 28,272 | $132,264 | 18.0 | 13.3% |
| 37932 | Knoxville | Standard | 25,424 | $119,703 | 38.8 | 69.5% |
| 37917 | Knoxville | Standard | 24,615 | $54,423 | 9.4 | 2.2% |
| 37912 | Knoxville | Standard | 21,505 | $47,416 | 10.6 | 11.2% |
| 37914 | Knoxville | Standard | 21,478 | $59,856 | 40.6 | 2.5% |
| 37938 | Knoxville | Standard | 17,437 | $84,135 | 32.1 | -3.1% |
| 37909 | Knoxville | Standard | 16,774 | $66,984 | 6.7 | 3.8% |
| 37916 | Knoxville | Standard | 15,583 | $14,925 | 0.5 | 19.7% |
| 37924 | Knoxville | Standard | 14,420 | $80,112 | 28.9 | 35.3% |
| 37721 | Corryton | Standard | 14,306 | $64,892 | 49.2 | 16.3% |
| 37915 | Knoxville | Standard | 5,991 | $26,379 | 2.0 | -2.8% |
| 37754 | Heiskell | Standard | 4,211 | $75,774 | 38.3 | -14.9% |
| 37806 | Mascot | Standard | 3,674 | $59,605 | 18.3 | 35.2% |
| 37902 | Knoxville | Standard | 2,412 | $50,161 | 0.5 | 24.9% |
| 37929 | Knoxville | Standard | 0 | — | 0.0 | — |
| 37997 | Knoxville | Unique | — | — | 0.0 | — |
| 37995 | Knoxville | Unique | — | — | 0.0 | — |
| 37901 | Knoxville | PO Box | — | — | 0.0 | — |
| 37996 | Knoxville | Unique | — | — | 0.7 | — |
| 37950 | Knoxville | PO Box | — | — | 0.0 | — |
| 37998 | Knoxville | Unique | — | — | 0.5 | — |
| 37939 | Knoxville | PO Box | — | — | 0.0 | — |
| 37940 | Knoxville | PO Box | — | — | 0.0 | — |
| 37933 | Knoxville | PO Box | — | — | 0.0 | — |
| 37930 | Knoxville | PO Box | — | — | 0.0 | — |
| 37928 | Knoxville | PO Box | — | — | 0.0 | — |
| 37927 | Knoxville | PO Box | — | — | 0.0 | — |