Corryton, TN · standard
ZIP Code 37721
Knox County, Tennessee - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 12,733
- 100/sq mi Moderate-density area
- $64,892
- Median income Near-median income area
- $233,300
- Median home value Near-median home value
- 17.8%
- Bachelor's or higher Below-average bachelor's attainment
National ZIP placement
Corryton pairs a below-median household income with above-median home values, in a rural, homeowner-dominated area.
- 38th pct
- household income, US ZIPs
- Top 47%
- home value, US ZIPs
- 100
- people per sq mi
- 82%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 37721 against every reporting US ZIP.
FHFA HPI release change
What changed in the latest House Price Index year
- FHFA House Price Index values in ZIP 37721 (Corryton, TN) fell -2.9% from 2023 to 2024. The all-transactions index moved from 286.7 in 2023 to 278.3 in 2024 (2000 = 100).
ZIP code 37721 is a mid-sized community (a standard USPS delivery area) in Corryton, Knox County, Tennessee, home to 12,733 residents across 127.6 square miles, a density of 100 people per square mile, in the New York time zone.
ZIP 37721 reports a modest median household income of $64,892 (2% below the average Tennessee ZIP), while per-capita income is $33,223. Both reported hardship measures are comparatively low in absolute terms: poverty is 7.8% and unemployment is 3.9%. Median home value is $233,300 (6% below the average Tennessee ZIP) and median rent is $973; 82.3% of occupied homes are owner-occupied.
Educational attainment sits below the national norm: 17.8% of adults hold a bachelor's degree or higher, the median age is 43.3, and the average commute is 30 minutes. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Knox County, so 37721 can be compared with both its immediate and county-level context.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Top industries in ZIP 37721
Top 5 sectors by establishment count in Corryton, TN
Which industries have the most business establishments in ZIP 37721.
- Construction
Construction
25 establishments
- Other services (except public administration)
Other services (except public administration)
23 establishments
- Retail trade
Retail trade
13 establishments
- Administrative and support and waste management and remediation services
Administrative and support and waste management and remediation services
13 establishments
- Accommodation and food services
Accommodation and food services
12 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 37721, Corryton, TN · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.
Quick Facts
12,733
Population
127.6
Area (sq mi)
100
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 37721?
43.3
Median Age
50.8%
Male
49.2%
Female
1.3%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$64,892
Median Household Income
-2% vs state ZIP avg
$33,223
Per Capita Income
7.8%
Poverty Rate
3.9%
Unemployment Rate
30.3 min
Mean Commute Time
How ZIP 37721 ranks among Tennessee ZIPs
Corryton, TN household income vs. every Tennessee ZIP code
Median household income among 593 reporting Tennessee ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$64,892 Top 42% higher than 58% of 593 Tennessee ZIPs
Each bar is a $20K-wide band; taller bars hold more Tennessee ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
5,886housing units
5,886
Total Housing Units
5,568
Occupied Units
318
Vacant Units
2.57
Avg Household Size
Occupancy Type
$233,300
Median Home Value
-6% vs state ZIP avg
$973
Median Rent
1993
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How have home values changed over time?
FHFA House Price Index, annual appreciation data based on repeat sales and appraisals
-2.9%
YoY Change (2024)
278
HPI Index (2000 = 100)
+178%
Total Change Since 2000
Home values in ZIP 37721 have decreased 2.9% over the past year (2024). Since 2000, this ZIP has seen +178% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +4.7% | 175 |
| 2021 | +15.3% | 201 |
| 2022 | +19.4% | 240 |
| 2023 | +19.2% | 287 |
| 2024 | -2.9% | 278 |
Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.
What businesses operate in this ZIP?
Census Bureau data shows 108 business establishments in ZIP 37721, employing approximately 1,091 people with a combined annual payroll of $41,145,000.
108
Businesses
1,091
Employees
$41.1M
Annual Payroll
9
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Construction | 25 | 23.1% |
| Other services (except public administration) | 23 | 21.3% |
| Retail trade | 13 | 12.0% |
| Administrative and support and waste management and remediation services | 13 | 12.0% |
| Accommodation and food services | 12 | 11.1% |
| Health care and social assistance | 7 | 6.5% |
| Professional, scientific, and technical services | 4 | 3.7% |
| Transportation and warehousing | 3 | 2.8% |
| Finance and insurance | 3 | 2.8% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 37721 vs 37924 →
ZIP 37721 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 37918
Knoxville (37918)
42,835 residents
- 37917
Knoxville (37917)
24,072 residents
- 37938 17,085
Knoxville (37938)
17,085 residents
- 37721 12,733
Corryton (37721)
12,733 residents
- 37924 11,259
Knoxville (37924)
11,259 residents
- 37807 9,923
Maynardville (37807)
9,923 residents
- 37871 9,134
Strawberry Plains (37871)
9,134 residents
- 37779 3,978
Luttrell (37779)
3,978 residents
- 37709 3,732
Blaine (37709)
3,732 residents
What this shows Among its immediate neighbors, ZIP 37721 ranks #4 by population - useful context the national average alone can't give.
ZIP 37721 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 37938
Knoxville (37938)
$84,135 median income
- 37924
Knoxville (37924)
$80,112 median income
- 37709
Blaine (37709)
$75,799 median income
- 37871
Strawberry Plains (37871)
$70,938 median income
- 37918
Knoxville (37918)
$69,752 median income
- 37721
Corryton (37721)
$64,892 median income
- 37807
Maynardville (37807)
$62,673 median income
- 37806
Mascot (37806)
$59,605 median income
- 37917
Knoxville (37917)
$54,423 median income
What this shows By household income, ZIP 37721 ranks #6 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 37924 | Knoxville, TN | 11,259 | 6.6 mi |
| 37806 | Mascot, TN | 2,868 | 5.5 mi |
| 37779 | Luttrell, TN | 3,978 | 6.4 mi |
| 37938 | Knoxville, TN | 17,085 | 7.4 mi |
| 37807 | Maynardville, TN | 9,923 | 8.9 mi |
| 37918 | Knoxville, TN | 42,835 | 7.5 mi |
| 37709 | Blaine, TN | 3,732 | 8.3 mi |
| 37871 | Strawberry Plains, TN | 9,134 | 9.1 mi |
| 37848 | Powder Springs, TN | 246 | 10.1 mi |
| 37917 | Knoxville, TN | 24,072 | 10.8 mi |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 37721, both outside TN so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (12,733 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Knox County
Related Areas
Frequently Asked Questions
What county is ZIP code 37721 in?
ZIP code 37721 (Corryton) is located in Knox County, Tennessee. Knox County contains multiple ZIP codes, see the full list at /counties/knox-tn.
What is the population of ZIP code 37721?
ZIP code 37721 in Corryton, TN has a population of 12,733 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 37721?
The median household income in ZIP 37721 is $64,892, which is 15% below the national average of $76,288.
What is the average home value in ZIP 37721?
The median home value in ZIP 37721 is $233,300, which is 16% below the national average of $278,155.
What is the demographic makeup of ZIP 37721?
The largest racial group in ZIP 37721 is White at 93.0%. Hispanic or Latino residents make up 1.2% of the population.
How many businesses are in ZIP code 37721?
ZIP code 37721 has 108 business establishments employing approximately 1,091 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 37721?
The top industries by establishment count in ZIP 37721 are: Construction (25), Other services (except public administration) (23), Retail trade (13). There are 9 industry sectors represented in total.
How have home values changed in ZIP code 37721?
According to the FHFA House Price Index, home values in ZIP 37721 decreased by 2.9% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 178%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 37721?
In ZIP code 37721, 57.6% of residents aged 25+ have a high school diploma or higher, and 17.8% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 37721?
The mean commute time for workers in ZIP code 37721 is 30.3 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 37721?
In ZIP code 37721, approximately 82.3% of occupied housing units are owner-occupied and 17.7% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 37721?
The poverty rate in ZIP code 37721 is 7.8% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
Take this with you
What to do with ZIP 37721's numbers, next.
- See how ZIP 37721 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Corryton, TN ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.