ZIP code
37721
Corryton, TN
37721 covers Corryton in Knox County, with 14,649 people in the ACS 2023 estimate.
Figures are for the Census ZIP Code Tabulation Area (ZCTA), which is not the same as a USPS ZIP code. A PO Box or unique ZIP may have no ZCTA and no demographics. Methodology
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 37721. Methodology
ZIP code map of 37721

About ZIP code 37721
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 37721. Not ACS. Methodology
People in 37721
Race
- White13,164
- Black or African American200
- American Indian or Alaska Native33
- Asian48
- Native Hawaiian and Pacific Islander9
- Other race131
- Two or more races637
Hispanic or Latino (any race): 334
Age
- Under 101,782
- 10 to 191,858
- 20 to 291,534
- 30 to 391,756
- 40 to 491,844
- 50 to 591,945
- 60 to 691,882
- 70 to 791,099
- 80 and older522
Income and housing in 37721
Education
- High school graduate89.9%
- Bachelor's degree17.2%
- Graduate degree5.9%
Places covering 37721
Cities and places — Population overlap
Share of this ZIP/ZCTA’s population located within each place, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
- Plainview11.4%
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
Counties — Population overlap
Share of this ZIP/ZCTA’s population located within each county, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.
- Knox County87.6%
- Union County12.4%
ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
88.6% of this ZIP is outside city limits (a real overlap row, not missing data).
Population history for 37721
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 10,900 | |
| 2006 | 10,725 | |
| 2007 | 11,986 | |
| 2008 | 11,262 | |
| 2009 | 11,368 | |
| 2010 | 11,491 | |
| 2011 | 12,598 | 11,486 |
| 2012 | 12,795 | 11,490 |
| 2013 | 12,740 | 11,470 |
| 2014 | 12,305 | 11,630 |
| 2015 | 11,734 | 11,730 |
| 2016 | 12,819 | 11,690 |
| 2017 | 12,798 | 11,900 |
| 2018 | 12,916 | 12,190 |
| 2019 | 13,426 | 12,210 |
| 2020 | 14,024 | 12,700 |
| 2021 | 14,163 | 12,450 |
| 2022 | 14,522 | 12,750 |
| 2023 | 14,649 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 37721
12 nearest ZIP centroids (any distance)
- 37806Mascot5.8 miPop 3,011 · Income $56,076
- 37779Luttrell6.4 miPop 3,443 · Income $51,159
- 37938Knoxville6.9 miPop 16,904 · Income $80,868
- 37924Knoxville7.2 miPop 14,672 · Income $73,794
- 37918Knoxville7.7 miPop 45,978 · Income $69,311
- 37709Blaine8.7 miPop 3,948 · Income $61,509
- 37807Maynardville8.9 miPop 11,476 · Income $62,040
- 37871Strawberry Plains9.4 miPop 8,548 · Income $73,102
- 37914Knoxville10.2 miPop 20,917 · Income $55,933
- 37848Powder Springs10.4 miPop 94 · Income $93,661
- 37917Knoxville10.5 miPop 25,738 · Income $51,232
- 37754Heiskell12.0 miPop 4,075 · Income $70,475
ZIP centroids within 2 miles
No other ZIP codes within 2 miles of 37721, measured by Census internal-point centroids. Try a wider radius.
ZIPs within 2 miles of this place
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ZIP code 37721 FAQ
- What city is ZIP code 37721 in?
- 37721 is in Corryton, TN.
- What county is 37721 in?
- 37721 is in Knox County.
- What is the median household income in 37721?
- The median household income in 37721 is $64,674.
- Which ZIP codes are near 37721?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 37721.