ZIP code 37721
Where is ZIP code 37721?
Corryton, Tennessee
Knox County · Standard ZIP code
ZIP code 37721 belongs to Corryton, Tennessee in Knox County. 37721 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Eastern Time zone and uses area code 865. About 14,306 people live in the 37721 area, where the median household income is $64,892. The closest ZIP codes are 37806 (Mascot, 4.7 mi southeast), 37924 (Knoxville, 6.1 mi south) and 37779 (Luttrell, 6.3 mi northeast).
| ZIP code | 37721 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Corryton |
| State | Tennessee (TN) |
| County | Knox County |
| Time zone | Eastern Time · now |
| Area code | 865 |
| Coordinates | 36.12, -83.813 map |
| 3-digit prefix | 377 |
Population and income in 37721
| Population | 14,306 · higher than 72% of Tennessee ZIP codes |
|---|---|
| People per square mile | 290 · higher than 73% of Tennessee ZIP codes |
| Median age | 43.3 years · higher than 56% of Tennessee ZIP codes |
| Men / women | 51% / 49% |
| Median household income | $64,892 · higher than 58% of Tennessee ZIP codes |
| Income per person | $33,223 |
| Below the poverty line | 7.8% |
| Bachelor’s degree or higher | 18% of adults 25+ |
| Median home value | $233,300 · higher than 58% of Tennessee ZIP codes |
| Median rent | $973 a month |
| Housing units | 5,886 |
| Households | 5,568 (2.57 people on average) |
| Owners / renters | 82% / 18% |
| Land area | 49.28 sq mi (plus 0.01 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 37721. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 37721
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 37806 | Mascot, TN | 4.7 mi SE | Standard |
| 37924 | Knoxville, TN | 6.1 mi S | Standard |
| 37779 | Luttrell, TN | 6.3 mi NE | Standard |
| 37901 | Knoxville, TN | 7.3 mi SW | PO Box only |
| 37938 | Knoxville, TN | 7.5 mi W | Standard |
| 37918 | Knoxville, TN | 7.8 mi SW | Standard |
| 37709 | Blaine, TN | 8 mi E | Standard |
| 37807 | Maynardville, TN | 8 mi N | Standard |
| 37914 | Knoxville, TN | 9.1 mi S | Standard |
| 37871 | Strawberry Plains, TN | 9.4 mi E | Standard |
| 37917 | Knoxville, TN | 10.2 mi SW | Standard |
| 37848 | Powder Springs, TN | 10.9 mi NE | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 37721 or measure the distance to another ZIP code.
How to address mail to 37721
123 MAIN ST
CORRYTON TN 37721
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (37721-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 37721?
- 37721 is a Corryton, Tennessee ZIP code.
- What county is 37721 in?
- ZIP code 37721 is in Knox County, Tennessee.
- What time zone is ZIP code 37721 in?
- 37721 is in the Eastern Time zone (America/New_York).
- What area code is 37721?
- Phone numbers in ZIP code 37721 use area code 865.
- What is the population of ZIP code 37721?
- About 14,306 people live in ZIP code 37721, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 37721?
- The median household income in 37721 is $64,892 a year, higher than 58% of Tennessee ZIP codes.
- What ZIP codes are near 37721?
- The nearest ZIP codes to 37721 are 37806 (Mascot, 4.7 miles), 37924 (Knoxville, 6.1 miles), 37779 (Luttrell, 6.3 miles) and 37901 (Knoxville, 7.3 miles).