37640 ZIP Code — Butler, TN

Johnson County, Tennessee

ZIP code 37640 is located in Butler, Tennessee, within Johnson County. It covers approximately 105.00 square miles and serves a population of 3,517 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 423.

About ZIP code 37640

The housing stock consists of a higher-than-average concentration of mobile homes. Most homes were built in the 2000s, giving the area an established character. Median home value is $118,700. Owner-occupancy is high at 81%, well above the national average.

Median household income is $49,965. SNAP benefit usage at 25% of households reflects economic stress in the area. 52% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. An above-average commute of 36 minutes suggests many residents work outside the immediate area.

College attainment at 17% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of smoking (28%) compared to national benchmarks.

Notable community characteristics include a notable veteran presence at 14% of civilians, above the national average of 7%; and disability rates above the national average at 26%.

Overall, ZIP code 37640 reflects a community defined by a trades-oriented workforce, a strong veteran community, high homeownership, a significant Social Security-dependent population, and elevated reliance on food assistance.

3,517

population

105.00

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

37640 ZIP code map

Cities in ZIP code 37640

Below are the cities the US Postal Service accepts for ZIP code 37640. Using any city not on this list may result in mail delivery delays.

City	Status
Butler	Preferred

Nearby ZIP codes

37643 Elizabethton (7.4 mi) 28622 Elk Park (8.9 mi) 28679 Sugar Grove (9.7 mi) 37658 Hampton (11 mi) 28692 Vilas (11.2 mi) 37687 Roan Mountain (11.5 mi) 37683 Mountain City (12.2 mi) 28604 Banner Elk (13.3 mi) 37691 Trade (14.1 mi) 28698 Zionville (14.4 mi) 37618 Bluff City (15 mi) 37620 Bristol (15.2 mi)

Demographics updated 06/2026

Population
Total population	3,517
Population density	33 / sq mi
State FIPS	47
County FIPS	091

Geography
Land area	105.00 sq mi
Water area	7.64 sq mi
Latitude	36.3276
Longitude	-81.9956
Timezone	Eastern (ET)
Area code	423

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	62.7%	64.9%	45.7%
$50k – $100k	28.7%	24.8%	30.9%
$100k – $200k	7.9%	8.4%	18.3%
Over $200k	0.7%	1.9%	5.1%

Demographics & statistics

3,517

Population

People per sq mi

52.8

Median age

$49,965

Median household income

$31,471

Per capita income

$118,700

Median home value

$759

Median monthly rent

80.9%

Home ownership

12.6%

Poverty rate

5.0%

Unemployment

2,113

Housing units

16.5%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

108

10–14

100

15–19

20–24

118

25–34

110

262

35–44

245

300

45–54

281

207

55–59

194

163

60–64

152

294

65–74

275

130

75–84

122

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	532	15.1%
18 and over	2,985	84.9%
65 and over	873	24.8%
Median age	52.8 years

Race & ethnicity

White 96.5%

Two or more races 3%

Hispanic or Latino 0.3%

American Indian / Alaska Native 0.2%

Group	Count	%
White	3,404	96.5%
Two or more races	105	3%
Hispanic or Latino	9	0.3%
American Indian / Alaska Native	8	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	62.7%	64.9%	45.7%
$50k – $100k	28.7%	24.8%	30.9%
$100k – $200k	7.9%	8.4%	18.3%
Over $200k	0.7%	1.9%	5.1%

Under $10k 5.5%

$10k–$15k 5.4%

$15k–$25k 10.6%

$25k–$35k 15.7%

$35k–$50k 12.9%

$50k–$75k 20.7%

$75k–$100k 10.7%

$100k–$150k 8.0%

$150k–$200k 4.8%

$200k+ 5.7%

Range	% of households
Under $10k	5.5%
$10k–$15k	5.4%
$15k–$25k	10.6%
$25k–$35k	15.7%
$35k–$50k	12.9%
$50k–$75k	20.7%
$75k–$100k	10.7%
$100k–$150k	8.0%
$150k–$200k	4.8%
$200k+	5.7%
Median income	$49,965

Housing

Home values

Under $50k 14.5%

$50k–$100k 28.0%

$100k–$150k 11.2%

$150k–$200k 9.2%

$200k–$300k 10.6%

$300k–$500k 11.0%

$500k–$1M 15.0%

$1M+ 0.4%

Housing overview

Metric	Value
Median home value	$118,700
Median rent / month	$759
Owner occupied	80.9%
Renter occupied	19.1%
Vacant	34.2%
Single-family detached	66.5%
Large apartment buildings	0.0%
Mobile homes	28.6%
Median rooms	5.4
Avg household size (owned)	2.22

Year built

Era	%
2020 or later	0.0%
2010–2019	5.7%
2000–2009	20.6%
1990–1999	17.4%
1980–1989	20.1%
1970–1979	6.7%
1960–1969	5.8%
1950–1959	5.9%
1940–1949	7.0%
1939 or earlier	10.7%

Bedrooms

Size	% of units
No bedroom (studio)	7.7%
1 bedroom	5.4%
2 bedrooms	33.0%
3 bedrooms	46.3%
4 bedrooms	2.8%
5+ bedrooms	4.8%

Vehicles per household

Vehicles	% of households
No vehicle	6.9%
1 vehicle	28.5%
2 vehicles	40.7%
3 or more	23.9%

Heating fuel

Fuel type	%
Utility gas	2.3%
Electricity	57.7%
Propane / LP gas	16.0%
Fuel oil	15.8%
Wood	7.2%

Households & families

Household type	Count	%
Married-couple family	843	53.0%
Cohabiting couple	110	6.9%
Male householder, no spouse	302	19.0%
Female householder, no spouse	336	21.1%
Households with children under 18	315	19.8%
Households with seniors (65+)	606	38.1%
Average household size	2.21

Marital status

Status	Male	Female
Never married	14.7%	15.1%
Married	62.7%	60.7%
Separated	0.3%	1.3%
Widowed	9.7%	12.5%
Divorced	12.5%	10.3%

Education

Less than 9th grade 7.6%

Some HS, no diploma 9.1%

HS graduate 42.3%

Some college, no degree 17.5%

Associate's degree 7.1%

Bachelor's degree 10.9%

Graduate / professional 5.5%

Metric	%
HS diploma or higher	83.3%
Bachelor's or higher	16.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	21	3.9%
Elementary school	319	59.4%
High school	91	16.9%
College / grad school	106	19.7%

Employment

Industry of employment

Education & healthcare 27.6%

Retail trade 15.6%

Arts, food & hospitality 13.8%

Manufacturing 12.5%

Public administration 9.1%

Construction 5.8%

Professional & management 4.5%

Agriculture & mining 3.9%

Transportation & utilities 3.1%

Other services 1.5%

Wholesale trade 1.4%

Finance & real estate 0.7%

Information 0.3%

Occupation

Category	%
Management, business & arts	36.6%
Service	25.0%
Sales & office	15.2%
Natural resources & construction	8.5%
Production & transportation	14.7%

Employment type

Type	%
Private sector	67.3%
Government	28.6%
Self-employed	2.9%
Unpaid family workers	1.3%

Commute

Method	%
Drive alone	67.4%
Carpool	16.6%
Public transit	0.8%
Walk	1.2%
Work from home	12.5%
Other means	1.6%
Avg commute (minutes)	36.3

Poverty

All people 12.6%

Under 18 years 10.8%

18 and over 12.9%

Married-couple families 4.9%

Female-led households 19.3%

Income support

Source	% of households
Social Security	52.4%
Retirement income	27.9%
Supplemental Security	10.2%
Cash public assistance	4.8%
Food stamps / SNAP	25.2%

Health indicators

Condition	%
Obesity	38.3%
High blood pressure	43.4%
High cholesterol	39.3%
Diabetes	14.8%
Heart disease	9.3%
Stroke	4.4%
Asthma	10.9%
Arthritis	34.6%
Kidney disease	3.7%
Pulmonary disease	12.3%
Cancer	7.5%

Behavior / access	%
Smoking	27.5%
Binge drinking	13.4%
No physical activity	30.5%
Less than 7 hrs sleep	36.7%
Depression	27.9%
Fair or poor health	21.8%
Poor mental health	17.8%
Poor physical health	14.9%
No health insurance	18.0%
Visited doctor (checkup)	74.9%
Visited dentist	50.7%
Cholesterol screening	90.0%
Teeth loss	21.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	428	14.3%

Disability	%
Any disability	26.2%
Under 18	15.2%
18–64 years	22.4%
65 and over	41.8%

Health insurance coverage

Type	%
Private insurance	49.5%
Public insurance	51.6%
No insurance	13.0%
Uninsured under 19	10.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	3,450	98.1%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	3,463	98.5%
Born in same state	3,463	98.5%
Born in different state	1,788	50.8%
Foreign born	0	0.0%
Naturalized citizen	54	1.5%
Not a US citizen	25	46.3%

Ancestry

Ancestry	Count	%
Arab	831	23.6%
French	361	10.3%
Italian	285	8.1%

Ancestry	Count	%
English	10	0.3%
Dutch	10	0.3%

Technology access

Metric	% of households
Computer access	45.2%
Internet access	76.6%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 37640

What city is ZIP code 37640 in?

ZIP code 37640 is primarily assigned to Butler, Tennessee.

What county is ZIP code 37640 in?

ZIP code 37640 falls within Johnson County, Tennessee.

Does ZIP code 37640 have a large retiree population?

52% of households in ZIP code 37640 receive Social Security income, suggesting a significant retiree or disability population.

Is ZIP code 37640 mostly owner-occupied?

81% of occupied units in ZIP code 37640 are owner-occupied, well above the national average.

Does ZIP code 37640 have a large veteran population?

14% of civilians in ZIP code 37640 are veterans, above the national average of ~7%.

What is the typical home value in ZIP code 37640?

The median home value in ZIP code 37640 is $118,700.

What timezone is ZIP code 37640 in?

ZIP code 37640 observes the EST timezone.