Residential delivery area · Tennessee
ZIP Code 37931: Knoxville, TN
ZIP code 37931 uses the postal name Knoxville, Tennessee and lies mostly in Knox County (91% of its land) with the rest in Anderson County (Census 2020 ZIP-county file). About 32,000 people live there (Census Bureau, ACS 2020-2024), the 4th most populous of Knoxville's 19 residential ZIP codes. Median household income is $92,150 (Census Bureau, ACS 2020-2024). By Census place, 11% of its land lies in Karns (a census-designated place); 90% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Knoxville · 19 residential ZIPs
- County
- Knox County (91%); Anderson County (9%)
- Census places
- Karns census-designated place
- Metro area
- Knoxville, TN
- House districts
- TN-2 (91%), TN-3 (9%) 119th Congress, by share of land
- State
- Tennessee
- Time zone
- Eastern
- Land area
- 28.4 sq mi · 1,123 people per sq mi
- PO Box ZIPs
- 12 more ZIP codes use the name Knoxville for PO boxes or single organizations
Where is ZIP code 37931?
37931 centers on 35.976°, -84.126° and covers 28.4 square miles of land plus 0.6 of water. It borders 6 ZIP codes: 37923, 37932, 37849, 37921, 37716, 37830.
The map draws ZIP code areas only. For the streets inside 37931, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 37931 compare with the rest of Knoxville?
| Measure | 37931 | In Knoxville | In Knox County | In TN |
|---|---|---|---|---|
| People (ACS 2020-2024) | 31,842 | 4th of 19 | 4th of 28 | 61st of 636 |
| Median household income | $92k | 4th of 15 | 4th of 23 | 52nd of 425 |
| Median home value | $360k | 5th of 16 | 5th of 24 | 75th of 436 |
Its median household income is higher than in 75% of U.S. residential ZIP codes, and it is denser than 79% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 37931?
The 2020 Census counted 31,358 people in 37931; the ACS, which samples households over 2020-2024, estimates 31,842. Between the 2010 and 2020 censuses its population grew 20.1% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 31,842
- 2020 Census count
- 31,358+20.1% since 2010 (26,109)
- Households
- 12,538
- Median age
- 37.7
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 37931?
Of the 31,842 people the ACS estimates in 37931, 24.1% are under 18 and 15.9% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (83.2%).
- Under 1824.1%
- 18 to 6460.0%
- 65 and older15.9%
- White, not Hispanic83.2%
- Other or two or more6.0%
- Hispanic or Latino5.7%
- Black, not Hispanic3.1%
- Asian, not Hispanic2.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 37931 earn?
Median household income is $92,150 (ACS 2020-2024), the 4th highest of the 23 ranked ZIP codes in Knox County. It is not measurably different from 2015-2019 ($99,400 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $92,150
- Income per person
- $43,533
- Below the poverty line
- 7.1%
- Unemployed (of the labor force)
- 2.2%
- Adults 25+ with a bachelor's degree
- 47.0%
- Adjusted gross income per tax return, 2022
- $84,78415,550 returns; wages 74% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 37931?
FHFA's house price index for 37931, built from repeat sales and appraisals of the same homes, rose 114% from 2015 to 2025 and rose 67% from 2020 to 2025, and moved +5.7% in 2025.
- Median home value (owners' estimate)
- $359,600
- Median gross rent
- $1,542
- Homes owned by their occupants
- 71.3%
- Housing units
- 13,373
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 37931?
409 business establishments had a location in this ZIP code in 2023, 63 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction61
- Health care and social assistance47
- Other services (except public administration)41
- Retail trade37
- Administrative and support and waste management and remediation services37
- Professional, scientific, and technical services36
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 37931?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 37923 | Knoxville | 30,131 | $74k | 4.2 mi |
| 37932 | Knoxville | 25,424 | $120k | 5.7 mi |
| 37849 | Powell | 29,375 | $84k | 6.9 mi |
| 37921 | Knoxville | 28,717 | $60k | 7.0 mi |
| 37716 | Clinton | 27,425 | $65k | 8.9 mi |
| 37830 | Oak Ridge | 33,038 | $72k | 9.2 mi |
| 37909 | Knoxville | 16,774 | $67k | 6.1 mi (near) |
| 37934 | Knoxville | 28,272 | $132k | 7.5 mi (near) |
| 37922 | Knoxville | 40,394 | $133k | 8.1 mi (near) |
| 37912 | Knoxville | 21,505 | $47k | 8.2 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.