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ZIP Code Database - Facts & Stats

Data Last Updated: March 1, 2023

Zip Code 37921, Knoxville, TN

ZIP Code 37921 Details

Zip Code:37921
State:TN [Tennessee]
Counties:KNOX, TN
Multi County:No
City Alias(es):Knoxville
Area Code:865
City Type:P [Post Office]
Classification: [Non-Unique]
Time Zone:Eastern (GMT -05:00)
Observes Daylight Saving:Yes
Elevation:1042 ft
State FIPS:47
County FIPS:093
Division:East South Central
Intro Date:<2004-10

ZIP Code 37921 2010 Census Demographics

Current Population:30,375
2010 Population:28,233
Households per ZIP Code:11,295
Average House Value:$144,800
Avg. Income Per Household:$53,000
Persons Per Household:2.48
White Population:21,414
Black Population:5,877
Hispanic Population:1,643
Asian Population:361
American Indian Population:331
Hawaiian Population:158
Other Population:978
Male Population:13,488
Female Population:14,745
Median Age:33.20 years
Male Median Age:32.10 years
Female Median Age:34.40 years

ZIP Code 37921 Other Demographics

# Residential Mailboxes:12,248
# Business Mailboxes:963
Total Delivery Receptacles:16,587
Number of Businesses:692
1st Quarter Payroll:$252,121,000
Annual Payroll:$988,622,000
# of Employees:30,125
Water Area:0.007 sq mi
Land Area:15.901 sq mi
118th Congressional District:02
118th Congressional Land Area:2320.68 sq mi
Single Family Delivery Units:9,429
Multi Family Delivery Units:1,644
# Residential Mailboxes:12,248
# Business Mailboxes:963
Total Delivery Receptacles:16,587

ZIP Code 37921 Social Security Benefits

  2018 2019 Delta
Total Beneficiaries: 5,100 5,090 -10
Retired Workers: 3,030 3,115 +85
Disabled Workers: 1,080 1,015 -65
Widow(er)s and Parents: 355 330 -25
Spouses: 120 130 +10
Children: 515 500 -15
65+: 3,240 3,300 +60
Monthly Benefits - All: $6,290,000 $6,458,000 +$168,000
Monthly Benefits - Retired Workers: $4,249,000 $4,472,000 +$223,000
Monthly Benefits - Widow(ers): $447,000 $434,000 ($13,000)

ZIP Code 37921 Statistical Areas

CBSA: 28940
CBSA Name: Knoxville, TN
CBSA Type: Metro
CBSA Division: 
CBSA Division Name: 
CBSA Population:698,030
CBSA Division Population:0
MSA: 3840
MSA Name: Knoxville, TN MSA
PMSA Name: 
City State Key:X25385
Preferred Last Line Key:X25385
37920: Previous ZIP Code
Next ZIP Code: 37922


  1. U.S. Postal Service [Last Updated: 3/1/2023],
  2. Internal Data Creation [Last Updated: 3/1/2023],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census American National Standards Institute (ANSI) [Last Updated: 3/1/2023],
  6. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],
  7. Centers for Medicare & Medicaid Services [Updated Yearly],