Postal Codes

37640 ZIP Code

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ZIP code 37640 covers Butler, Tennessee, with a population of about 3,343 and a median household income of $47,404.

Population
3,34332 per square mile
Median age
5415.3 points above the US average
Median household income
$47,40429% below the Tennessee median
Poverty rate
16.5%4.1 points above the US average
Typical home value
$306,242up 23.6% in five years
Median rent
$67440% below the Tennessee median
Degree or higher
16.1%18.9 points below the US average
Homeownership
84.3%19.3 points above the US average
Time zone
Eastern UTC-05:00observes daylight saving time
Businesses
38

Where 37640 is

Butler, Tennessee — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Population3,343
Median age54
Family households62.5%
Born outside the US1.2%
Speaks a language other than English at home0.5%
White (non-Hispanic)96.5%
Black (non-Hispanic)0%
Asian (non-Hispanic)0%
Hispanic or Latino0%
Veterans12.6%
Population by age
MaleFemale0-45-910-1415-1920-2425-3435-4445-5455-6465-7475-8485+
Income and poverty

American Community Survey 2019–2023 five-year estimates

Median household income$47,404
Income per person$32,111
Poverty rate16.5%
Households on SNAP or cash assistance21.6%

Household income distribution

Under $10k8.0%
$10–15k4.0%
$15–20k10.0%
$20–25k6.7%
$25–30k7.3%
$30–35k5.9%
$35–40k2.3%
$40–45k4.2%
$45–50k1.9%
$50–60k6.2%
$60–75k16.4%
$75–100k9.3%
$100–125k4.9%
$125–150k3.4%
$150–200k5.0%
$200k or more4.3%

Income as declared to the IRS

Filed returns rather than survey responses, so this counts tax units and not households.

Tax returns filed1,430
Mean adjusted gross income$75,720
Returns declaring $200,000 or more5.6%
Returns, under $25k30.1%
Returns, $25k–$50k25.9%
Returns, $50k–$75k16.8%
Returns, $75k–$100k9.1%
Returns, $100k–$200k12.6%
Returns, $200k or more5.6%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$154,400
Median gross rent$674
Rent as a share of household income28.9%
Owner-occupied84.3%
Vacant homes30.1%
Median year built1989

What the homes are

Detached house67.6%
Attached house2.3%
5 to 19 units4.8%
Mobile home25%
Boat, RV or van0.3%
Home values and rents today

Zillow Home Value Index and Zillow Observed Rent Index, courtesy of Zillow. Monthly and current, where the Census figures above are a five-year average and are capped at $2,000,000.

Typical home value$306,242as of 2026-07
Typical home value, 1 yearup 0.1%
Typical home value, 5 yearsup 23.6%
Typical home value, 10 yearsup 88.3%
Typical home value since 2000
200020132026$306,467$73,156

$73,156 in 2000 to $306,242 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate5.3%
Bachelor's degree or higher16.1%
High school diploma or higher83.4%
Works from home12.8%
Drives to work alone70.3%
Takes public transport0.3%
Commutes 45 minutes or more31.3%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Obesity39.6% 6.2 pts above the national average of 33.4%
Diagnosed diabetes18.5% 6.5 pts above the national average of 12%
Currently smokes23.7% 10.5 pts above the national average of 13.2%
High blood pressure48.4% 14.3 pts above the national average of 34.1%
Fair or poor general health30.4% 10.1 pts above the national average of 20.3%
No health insurance (18–64)13.1% 1.8 pts above the national average of 11.3%
Depression30.8% 8.9 pts above the national average of 21.9%
No leisure-time physical activity34.6% 9.2 pts above the national average of 25.4%
Arthritis41.3% 16.2 pts above the national average of 25.1%
Binge drinking12.2% 3.8 pts below the national average of 16%
Taking blood pressure medication80.7% 6 pts above the national average of 74.7%
Cancer (non-skin)10.9% 3.2 pts above the national average of 7.7%
Current asthma11.6% 1.2 pts above the national average of 10.4%
Coronary heart disease10.8% 4.6 pts above the national average of 6.2%
Routine check-up in past year79.9% 3.2 pts above the national average of 76.7%
Cholesterol screening87.2% 1.3 pts above the national average of 85.9%
Cognitive disability20.3% 5.5 pts above the national average of 14.8%
Colorectal screening63.5% 0.8 pts below the national average of 64.3%
COPD14.4% 7.8 pts above the national average of 6.6%
Visited a dentist53.2% 8.1 pts below the national average of 61.3%
Any disability45.1% 14.4 pts above the national average of 30.7%
Hearing disability11.5% 4.8 pts above the national average of 6.7%
High cholesterol46.1% 9.9 pts above the national average of 36.2%
Independent living disability12.6% 4.2 pts above the national average of 8.4%
Mammography use72% 3.9 pts below the national average of 75.9%
Poor mental health (14+ days)20.2% 3.4 pts above the national average of 16.8%
Mobility disability24.4% 10.4 pts above the national average of 14%
Poor physical health (14+ days)20.3% 6.8 pts above the national average of 13.5%
Self-care disability6.1% 2.1 pts above the national average of 4%
Sleeps under 7 hours39.1% 2.7 pts above the national average of 36.4%
Stroke5.4% 2 pts above the national average of 3.4%
All natural teeth lost22.8% 9.8 pts above the national average of 13%
Vision disability7.6% 2 pts above the national average of 5.6%
Business and employment

Census ZIP Code Business Patterns 2022

Business establishments38
People employed154
Annual payroll$6,179,000
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Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 39.4% of US census tracts
FEMA ratingVery Low to Relatively Moderate across the 3 census tracts this ZIP code covers
Expected annual loss23 out of 100
Community resilience7.7 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Landslide97.7Relatively Moderate at its worst in this ZIP code
Wildfire82.4Relatively Low at its worst in this ZIP code
Strong wind77.2Relatively High at its worst in this ZIP code
Cold wave74Relatively High at its worst in this ZIP code
Lightning71.7Relatively High at its worst in this ZIP code
Ice storm63.5Relatively Low at its worst in this ZIP code
River flooding58.9Relatively Moderate at its worst in this ZIP code
Winter weather55.7Relatively Moderate at its worst in this ZIP code
Drought55.6Relatively Moderate at its worst in this ZIP code
Hurricane50.3Relatively Low at its worst in this ZIP code
Tornado45.8Relatively Low at its worst in this ZIP code
Hail44.8Relatively Low at its worst in this ZIP code
Earthquake41.2Relatively Low at its worst in this ZIP code
Heat wave0.9Very Low at its worst in this ZIP code
Compared with Tennessee and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPTennesseeUnited States
Median household income$47,404$67,097$78,538
Income per person$32,111$37,866$43,289
Poverty rate16.5%13.8%12.4%
Median home value$154,400$256,800$303,400
Median gross rent$674$1,122$1,348
Homeownership84.3%67%65%
Bachelor's degree or higher16.1%30.4%35%
Unemployment rate5.3%4.7%5.2%
Works from home12.8%11.4%13.5%
Born outside the US1.2%5.9%13.9%
Median age5438.938.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationFLAT SPRINGS 1E, NC US10.6 km away
Rain in a year49 in
Snow in a year48 in

Average high and low by month

January41.5°F / 24.3°F4.41 in rain, 12.6 in snow
February44.4°F / 27°F3.69 in rain, 11.2 in snow
March51.9°F / 32.9°F4.29 in rain, 8.6 in snow
April61.8°F / 42.2°F4.57 in rain, 0.9 in snow
May69.7°F / 50.1°F4.38 in rain
June75.4°F / 58°F5.18 in rain
July78.7°F / 60.8°F5.23 in rain
August77.7°F / 60.1°F4.2 in rain
September73.2°F / 54°F2.95 in rain
October63.7°F / 44.2°F3.05 in rain, 1 in snow
November53.4°F / 34.9°F3.03 in rain, 3.2 in snow
December45.7°F / 27.8°F4.01 in rain, 10.7 in snow
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarket25% of this ZIP code's area
Far from a supermarketNone of this ZIP code
No vehicle and far from a supermarketNone of this ZIP code
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

This ZIP code is served by 2 school districts, so the address decides which one, not the ZIP code.

Johnson County School District63.5% of this ZIP code's land area
Carter County School District36.5% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability49more vulnerable than 49% of US census tracts
Socioeconomic status63more vulnerable than 63% of US census tracts
Household characteristics25more vulnerable than 25% of US census tracts
Racial and ethnic minority status10more vulnerable than 10% of US census tracts
Housing type and transport60more vulnerable than 60% of US census tracts
Walkability2.8 out of 20Least walkable
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

28679 Sugar Grove, NC14.6 km away
28622 Elk Park, NC18.3 km away
37687 Roan Mountain, TN18.8 km away
37643 Elizabethton, TN19.4 km away
37658 Hampton, TN19.9 km away
37644 Elizabethton, TN20.3 km away
37691 Trade, TN20.9 km away
28692 Vilas, NC21.3 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

Johnson County63.5% of this ZIP code's land area
Carter County36.5% of this ZIP code's land area
Time zoneEastern (UTC-05:00 standard)
Daylight saving timeObserved
Land area105 sq mi
Water area7.64 sq mi
Population density32 people per sq mi
Latitude, longitude36.3282, -81.9856

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

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