ZIP Code Tabulation Area · Tennessee

ZIP Code 37640: Johnson County, TN

ZIP Code 37640 (Johnson County, Tennessee) has an estimated 3,851 residents in 1,899 households. The median household income is $55,402, the median home value is $174,000 and the median gross rent is $687/mo. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated Oct 26, 2026

Total population

3,851

Margin of error ±488

Median household income

$55,402

Margin of error ±$16,975

Median home value

$174,000

Margin of error ±$55,829

Median gross rent

$687/mo

Margin of error ±$115

Median age

53.4 yrs

Margin of error ±4.5 yrs

Mean travel time to work

34.4 min

Margin of error ±11.0 min

How ZIP 37640 compares with Tennessee and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 3764053.4 yrsTennessee38.9 yrsUnited States38.9 yrs

Median household income

ZIP 37640$55,402Tennessee$69,595United States$80,734

Per capita income

ZIP 37640$36,615Tennessee$39,437United States$44,673

Poverty rate

ZIP 3764021.1%Tennessee13.8%United States12.5%

Unemployment rate

ZIP 376403.6%Tennessee4.7%United States5.2%

Bachelor's degree or higher

ZIP 3764020.9%Tennessee31.1%United States35.7%

Median home value

ZIP 37640$174,000Tennessee$286,700United States$332,700

Median gross rent

ZIP 37640$687/moTennessee$1,189/moUnited States$1,413/mo

Owner-occupied homes

ZIP 3764085.8%Tennessee66.9%United States65.2%

Mean travel time to work

ZIP 3764034.4 minTennessee25.7 minUnited States26.4 min

Worked from home

ZIP 3764010.0%Tennessee12.9%United States15.1%

All figures for ZIP 37640

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 37640 — ACS 2020–2024 5-year estimates
Measure	ZIP 37640	Margin of error	Tennessee	United States
Total population	3,851	±488	7,066,383	334,922,499
Median age	53.4 yrs	±4.5 yrs	38.9 yrs	38.9 yrs
Households	1,899	±240	2,824,277	129,227,496
Median household income	$55,402	±$16,975	$69,595	$80,734
Per capita income	$36,615	±$8,307	$39,437	$44,673
Poverty rate	21.1%	±5.7 pts	13.8%	12.5%
Unemployment rate	3.6%	±3.2 pts	4.7%	5.2%
Bachelor's degree or higher	20.9%	±5.7 pts	31.1%	35.7%
Median home value	$174,000	±$55,829	$286,700	$332,700
Median gross rent	$687/mo	±$115	$1,189/mo	$1,413/mo
Owner-occupied homes	85.8%	±6.9 pts	66.9%	65.2%
Mean travel time to work	34.4 min	±11.0 min	25.7 min	26.4 min
Worked from home	10.0%	±5.5 pts	12.9%	15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 37640
Group	ZIP 37640	Tennessee	United States
White alone, not Hispanic or Latino	96.6%	71.0%	57.4%
Black or African American alone, not Hispanic or Latino	0.0%	15.4%	11.9%
American Indian and Alaska Native alone, not Hispanic or Latino	0.0%	0.1%	0.5%
Asian alone, not Hispanic or Latino	0.0%	1.9%	5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino	0.0%	0.1%	0.2%
Some other race alone, not Hispanic or Latino	0.0%	0.4%	0.6%
Two or more races, not Hispanic or Latino	3.3%	3.7%	4.3%
Hispanic or Latino (of any race)	0.0%	7.4%	19.3%

Where ZIP 37640 is

State: Tennessee
Main county: Johnson County— also overlaps Carter County
Largest overlapping place: Butler (1% of the ZIP's land area)
Land area: 105.00 sq mi· about 37 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Johnson County

37680 Johnson County, TN 37683 Johnson County, TN 37688 Johnson County, TN 37691 Johnson County, TN

See every ZIP code in Tennessee, or compare ZIP 37640 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.