Data Last Updated: May 1, 2025

Knox County, TN ZIP Codes

ZIP Codes: Shows how many general ZIP Codes, PO Boxes, Unique (Business), and Multi County ZIP Codes are associated with Knox, TN.	44 ZIP Codes (23 General, 8 PO Box, 4 Unique, & 9 Multi County) [More Details]
Area Code: The Telephone Area Code that are associated with Knox, TN. Area Codes are used in the North American Numbering Plan (NANP) to facilitate phone routing. There are approximately 350 area codes in use in the United States.	865
Timezone: Time zone designation within the U.S. Please note that not all areas in the U.S. observe daylight saving time which can affect actual local time for this city. There are 7 standard time zones which are, from west to east: Hawaii-Aleutian, Alaska, Pacific, Mountain, Central, Eastern, Atlantic. Also included in U.S. Territories are Samoa, Guam and Palau.	Eastern
Local Time: The current local time for each timezone. If more than 1 time zone for this area, all local times will be shown. Counties can cross timezones, so more than 1 may be shown.	12:00:00 AM
Population: The population of Knox, TN from the U.S. Census 2020. Included are U.S. Citizens, permanent residents, temporary migrants, and undocumented individuals. The total population represents people who live in the city, not just those present while the Census was being completed.	478,971 [More Details]
FIPS: FIPS stands for Federal Information Processing Standards, which are a set of publicly announced standards for computer systems. A county FIPS code is a unique numeric identifier for a county in the United States, assigned by the National Institute of Standards and Technology (NIST). County FIPS codes have five digits, with the first two digits identifying the state and the last 3 indicating the county.	47093
CBSA: A Core Based Statistical Area (CBSA) is the recognized term for a region that functions around an urban core with a population of at least 10,000 people, according to the standards set by the Office of Management and Budget (OMB) in 2000. A CBSA is divided into two subsets: Metro and Micro, and these classifications are determined by population density. A Micro area is identified by a population ranging between 10,000 to 50,000, while a Metro area is defined as having a population that exceeds 50,000.	Knoxville, TN
Land Area: The approximate amount of land area covered by Knox, TN in square miles. The Land Area provided by the Census Bureau is based on geographic boundaries that include the mainland, islands, inland, coastal, Great Lakes, and territorial waters associated with each city.	508 square miles
Water Area: The approximate amount of water area covered by Knox, TN in square miles. Calculations by the Census Bureau for Water Area take into account inland bodies of water, coastal regions, Great Lakes, and territorial sea waters. This encompasses features such as lakes, reservoirs, rivers, and coastal water bodies.	18 square miles
Coordinates: The latitude/longitude centroid coordinates for Knox County, TN.	-83.937099, 35.993214
Quick Link: Copy the direct link to the Knox, TNCounty page and use anywhere you like!	https://www.zip-codes.com/county/tn-knox.asp

Knox, TN ZIP Code Boundaries

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Knox County, TN Covers 44 ZIP Codes

ZIP Code	Classification	City	Population	% of Population
ZIP Code 37709 *	General	Blaine	3,900	--
ZIP Code 37721	General	Corryton	14,222	2.97%
ZIP Code 37754	General	Heiskell	4,826	1.01%
ZIP Code 37764 *	General	Kodak	10,583	--
ZIP Code 37772 *	General	Lenoir City	13,453	--
ZIP Code 37779 *	General	Luttrell	3,812	--
ZIP Code 37803 *	General	Maryville	33,463	--
ZIP Code 37806	General	Mascot	3,258	0.68%
ZIP Code 37807 *	General	Maynardville	10,449	--
ZIP Code 37830 *	General	Oak Ridge	31,839	--
ZIP Code 37849	General	Powell	27,742	5.79%
ZIP Code 37853 *	General	Rockford	3,621	--
ZIP Code 37871 *	General	Strawberry Plains	9,245	--
ZIP Code 37901	P.O. Box	Knoxville	0	0.00%
ZIP Code 37902	General	Knoxville	2,479	0.52%
ZIP Code 37909	General	Knoxville	16,066	3.35%
ZIP Code 37912	General	Knoxville	22,313	4.66%
ZIP Code 37914	General	Knoxville	20,587	4.30%
ZIP Code 37915	General	Knoxville	5,509	1.15%
ZIP Code 37916	General	Knoxville	14,400	3.01%
ZIP Code 37917	General	Knoxville	25,013	5.22%
ZIP Code 37918	General	Knoxville	46,245	9.66%
ZIP Code 37919	General	Knoxville	30,822	6.44%
ZIP Code 37920	General	Knoxville	41,210	8.60%
ZIP Code 37921	General	Knoxville	28,903	6.03%
ZIP Code 37922	General	Knoxville	39,623	8.27%
ZIP Code 37923	General	Knoxville	29,705	6.20%
ZIP Code 37924	General	Knoxville	12,894	2.69%
ZIP Code 37927	P.O. Box	Knoxville	0	0.00%
ZIP Code 37928	P.O. Box	Knoxville	0	0.00%
ZIP Code 37929	General	Knoxville	0	0.00%
ZIP Code 37930	P.O. Box	Knoxville	0	0.00%
ZIP Code 37931	General	Knoxville	31,358	6.55%
ZIP Code 37932	General	Knoxville	21,726	4.54%
ZIP Code 37933	P.O. Box	Knoxville	0	0.00%
ZIP Code 37934	General	Farragut	27,414	5.72%
ZIP Code 37938	General	Knoxville	18,207	3.80%
ZIP Code 37939	P.O. Box	Knoxville	0	0.00%
ZIP Code 37940	P.O. Box	Knoxville	0	0.00%
ZIP Code 37950	P.O. Box	Knoxville	0	0.00%
ZIP Code 37995	Unique	Knoxville	0	0.00%
ZIP Code 37996	Unique	Knoxville	0	0.00%
ZIP Code 37997	Unique	Knoxville	0	0.00%
ZIP Code 37998	Unique	Knoxville	0	0.00%

* Indicates a Multi County ZIP Code. These ZIP Codes partially cross over into Knox, TN, but will mostly cover area in a different County. Not included in % of Population calculations.

Important Knox, TN Information

Knox County, TN Covers 44 ZIP Codes. This includes 23 General ZIP Codes, 8 PO Box ZIP Codes, and 4 Unique (reserved for Business and Volume Mail Receivers). There are also 9 Multi County ZIP Codes. These records are assigned a different primary county, but they partially cover area in Knox County.

The population for Knox County is 478,971, according to the U.S. Census. Population Density is 942.86 persons per square mile. With 210,972 Housing Units, the Average Household Size is 2.38 persons. There are 195,165 Family Households with an Average Family Size of 3.02 persons. 7.54% of the population is without Health Insurance. The 62.24% Employment Rate is 2.44% above the national average of 59.8%.326,900 people aged 25+ have some educational achievement, with 40.16% (or 131,288 people) having attained a Bachelor's Degree or higher.More Demographics are available below.

865 is the only area code for this area. Knox is also located in the Eastern timezone and the current local time is shown above.

Knox is part of the Knoxville, TN Core Based Statistical Area (CBSA). Its CBSA Code is 28940.It is classified as a metro area, which means the combined population is 50,000 or more (at its core).

CBSAs are defined by the OMB as geographic areas that have at least one core with a population of 10,000 or more (for a micro area) and adjacent territory with a high degree of social and economic integration. CBSA codes are commonly used to accurately file Medicare claims and to verify applicable incentives using a patient's ZIP Code.

ZIP Codes in Knox, TN have 222,681 Residential mailboxes and 14,430 Business mailboxes.There are 12,376 businesses with a total of 230,514 employees. That is an average of 18.6 employees per business. Annual payroll for these businesses is $12,357,608,000. Other Demographics

Knox County Demographic Profile

Population & People

Total Population

478,971

Income

Median Household Income

$71,662

Housing

Total Housing Units

210,972

Health

Without Healthcare Coverage

7.54%

Business & Economy

Total Businesses

12,376

Families

Total Households

195,165

Employment

Employment Rate

62.24%

Education

Bachelor's Degree or Higher

40.16%

Total Population: Total number of people from the 2020 U.S. Census for Knox, TN. This reflects the exact count of this area at that point in time, not future estimates, regardless of citizenship or immigration status. It is intended to count all persons living within the geographic area, not just those present on the day of the census.	478,971
Current Population Estimate: This field gives the estimated household population for All ZIP Codes in Knox, TN. This is derived from known delivery information, household occupancy rates, household size, and more to come up with an accurate estimation for the current population. IMPORTANT: This does not include population totals for persons in nursing homes, correctional facilities, or other institutions. This is an estimation of the household population based on US Postal Service delivery information.	531,017
Total Households: Total number of Households from the 2020 U.S. Census for Knox, TN. A Household includes everyone living in a residential housing unit. This includes families, roommates in a single residence, or a person living alone.	195,165
Total Housing Units: The total number of Housing Units is the number of occupied units + the number of vacant units. Ownership is defined by whether the unit is occupied by an owner or by a tenant. Owner occupancy means that the owner lives in the unit. This value comes from the 2020 U.S. Census and is not a projection or estimate.	210,972
Average Household Size: The Average Household Size, is obtained by dividing the number of people in Households (excluding those in group quarters, nursing home, prisons, and dorm rooms) by the number of Households. A Household includes everyone living in a residential unit. Those who do not live in a household are classified as living in group accommodation. This value is an estimate from the U.S. Census ACS (American Community Survey) and is updated yearly.	2.38
Average Family Size: Average Family Size is calculated by dividing the number of people in a Family Household by the number of Family Households. The U.S. Census Bureau defines family households as households consisting of two or more individuals who are related by birth, marriage, or adoption. They also may include other unrelated people. Non-family households consist of people who live alone or who share their residence with unrelated individuals. The Average Family Size only looks at the households classified as Family Households. This value is an estimate from the U.S. Census ACS (American Community Survey) and is updated yearly.	3.02

Other Knox Demographics

# Residential Mailboxes: The number of active residential delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	222,681
# Business Mailboxes: The number of active business delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	14,430
Total Delivery Receptacles: The total number of delivery receptacles. This includes curb side mailboxes, centralized units, PO Boxes, NDCBU, and contract boxes. This count is for Residential and Business combined.	280,955
Single Family Delivery Units: Total count of single family mail delivery receptacles; generally analogous to homes.	157,210
Multi Family Delivery Units: Total count of multifamily mail delivery receptacles; generally analogous to apartments.	26,621

# of Businesses: The total number of Business Establishments. Data taken from Business Census 2023.	12,376
1st Quarter Payroll: The total payroll for the first quarter. Data taken from Business Census 2023.	$2,894,696,000
Annual Payroll: The total annual payroll . Data taken from Business Census 2023.	$12,357,608,000
# of Employees: The total number of employees for all ZIP Codes in this City. Data taken from Business Census 2023.	230,514

Sum of all ZIP Codes assigned Knox, TN as their primary County.

References

U.S. Postal Service [Last Updated: 5/1/2025], https://www.usps.com
ZIP-Codes.com Internal Data Creation [Last Updated: 5/1/2025], https://www.zip-codes.com
U.S. Geological Survey [Updated as needed], https://www.usgs.gov
U.S. Census [Updated Yearly], https://www.census.gov
U.S. Census 2020 [Decennial] [Last Updated: 5/25/2023], https://www.census.gov