Residential delivery area · Tennessee
ZIP Code 37640: Butler, TN
ZIP code 37640 uses the postal name Butler, Tennessee and lies mostly in Johnson County (64% of its land) with the rest in Carter County (Census 2020 ZIP-county file). About 3,900 people live there (Census Bureau, ACS 2020-2024). Median household income is $55,402 (Census Bureau, ACS 2020-2024). By Census place, under 1% of its land lies in Butler (a census-designated place); more than 99% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2024
- ZBP2023
- IRS2022
- Town
- Butler · its only residential ZIP
- County
- Johnson County (64%); Carter County (36%)
- Census places
- Butler census-designated place
- House district
- TN-1 119th Congress
- State
- Tennessee
- Time zone
- Eastern
- Land area
- 105.0 sq mi · 37 people per sq mi
Where is ZIP code 37640?
37640 centers on 36.327°, -81.975° and covers 105.0 square miles of land plus 7.6 of water. It borders 7 ZIP codes: 28692, 28679, 37643, 28622, 37658, 37683, 37687.
The map draws ZIP code areas only. For the streets inside 37640, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 37640 compare with the rest of Johnson County?
| Measure | 37640 | In Johnson County | In TN |
|---|---|---|---|
| People (ACS 2020-2024) | 3,851 | 2nd of 5 | 342nd of 636 |
| Median household income | $55k | not ranked | not ranked |
| Median home value | $174k | not ranked | not ranked |
37640's median household income is not ranked: its 90% margin of error (±$16,975) is more than a quarter of the figure ($55,402); 37640's median home value is not ranked: its 90% margin of error (±$55,829) is more than a quarter of the figure ($174,000). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 36% of U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 37640?
The 2020 Census counted 3,664 people in 37640; the ACS, which samples households over 2020-2024, estimates 3,851. Between the 2010 and 2020 censuses its population fell 2.1% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 3,851±488 (90% margin)
- 2020 Census count
- 3,664−2.1% since 2010 (3,743)
- Households
- 1,899
- Median age
- 53.4
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 37640?
Of the 3,851 people the ACS estimates in 37640, 15.0% are under 18 and 28.0% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (96.6%).
- Under 1815.0%
- 18 to 6456.9%
- 65 and older28.0%
- White, not Hispanic96.6%
- Other or two or more3.4%
- Hispanic or Latino0.0%
- Black, not Hispanic0.0%
- Asian, not Hispanic0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 37640 earn?
Median household income is $55,402 (ACS 2020-2024). It is not measurably different from 2015-2019 ($45,827 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $55,402±$16,975
- Income per person
- $36,615
- Below the poverty line
- 21.1%
- Unemployed (of the labor force)
- 3.6%
- Adults 25+ with a bachelor's degree
- 20.9%
- Adjusted gross income per tax return, 2022
- $75,7201,430 returns; wages 61% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 37640?
- Median home value (owners' estimate)
- $174,000
- Median gross rent
- $687
- Homes owned by their occupants
- 85.8%
- Housing units
- 2,503
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 37640?
37 business establishments had a location in this ZIP code in 2023, 2 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction7
- Accommodation and food services6
- Other services (except public administration)5
- Manufacturing3
- Retail trade3
- Professional, scientific, and technical services3
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 37640?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 28692 | Vilas, NC | 4,367 | $43k | 7.7 mi |
| 28679 | Sugar Grove, NC | 2,454 | $65k | 8.8 mi |
| 37643 | Elizabethton | 34,120 | $52k | 8.8 mi |
| 28622 | Elk Park, NC | 2,565 | $44k | 9.2 mi |
| 37658 | Hampton | 3,854 | $38k | 10.9 mi |
| 37683 | Mountain City | 12,943 | $56k | 12.2 mi |
| 37687 | Roan Mountain | 4,493 | $50k | 12.3 mi |
| 28698 | Zionville, NC | 2,320 | $54k | 11.9 mi (near) |
| 28604 | Banner Elk, NC | 7,869 | $76k | 12.2 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.