Residential delivery area · Tennessee
ZIP Code 37686: Piney Flats, TN
ZIP code 37686 uses the postal name Piney Flats, Tennessee and lies entirely in Sullivan County (Census 2020 ZIP-county file). About 9,500 people live there (Census Bureau, ACS 2020-2024). Median household income is $84,264 (Census Bureau, ACS 2020-2024). Its land lies mostly outside any Census place; 3% is in small places.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Piney Flats · its only residential ZIP
- County
- Sullivan County
- Metro area
- Kingsport-Bristol, TN-VA
- House district
- TN-1 119th Congress
- State
- Tennessee
- Time zone
- Eastern
- Land area
- 29.5 sq mi · 322 people per sq mi
- PO Box ZIPs
- 37699 also use the name Piney Flats
Where is ZIP code 37686?
37686 centers on 36.440°, -82.349° and covers 29.5 square miles of land plus 3.8 of water. It borders 6 ZIP codes: 37694, 37617, 37615, 37601, 37618, 37663.
The map draws ZIP code areas only. For the streets inside 37686, 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 37686 compare with the rest of Sullivan County?
| Measure | 37686 | In Sullivan County | In TN |
|---|---|---|---|
| People (ACS 2020-2024) | 9,495 | 7th of 10 | 215th of 636 |
| Median household income | $84k | 1st of 9 | 84th of 425 |
| Median home value | $352k | 1st of 8 | 81st of 436 |
Its median household income is higher than in 67% of U.S. residential ZIP codes, and it is denser than 68% of all 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 37686?
The 2020 Census counted 8,207 people in 37686; the ACS, which samples households over 2020-2024, estimates 9,495. Between the 2010 and 2020 censuses its population grew 16.0% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 9,495±1,407 (90% margin)
- 2020 Census count
- 8,207+16.0% since 2010 (7,072)
- Households
- 3,659
- Median age
- 44.1
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 37686?
Of the 9,495 people the ACS estimates in 37686, 18.5% are under 18 and 16.4% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (89.7%).
- Under 1818.5%
- 18 to 6465.1%
- 65 and older16.4%
- White, not Hispanic89.7%
- Asian, not Hispanic3.7%
- Hispanic or Latino3.3%
- Other or two or more2.1%
- Black, not Hispanic1.2%
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 37686 earn?
Median household income is $84,264 (ACS 2020-2024), the highest of the 9 ranked ZIP codes in Sullivan County. It is not measurably different from 2015-2019 ($73,268 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $84,264±$10,546
- Income per person
- $43,900
- Below the poverty line
- 5.4%
- Unemployed (of the labor force)
- 2.3%
- Adults 25+ with a bachelor's degree
- 35.5%
- Adjusted gross income per tax return, 2022
- $88,0664,320 returns; wages 67% 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 37686?
FHFA's house price index for 37686, built from repeat sales and appraisals of the same homes, rose 85% from 2015 to 2025 and rose 63% from 2020 to 2025, and moved −2.1% in 2025.
- Median home value (owners' estimate)
- $352,200
- Median gross rent
- $1,032
- Homes owned by their occupants
- 76.5%
- Housing units
- 3,943
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 37686?
162 business establishments had a location in this ZIP code in 2023, 1 more than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade23
- Manufacturing21
- Construction20
- Wholesale trade18
- Other services (except public administration)13
- Professional, scientific, and technical services11
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 37686?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 37694 | Watauga | 1,729 | $81k | 5.5 mi |
| 37617 | Blountville | 14,744 | $65k | 5.9 mi |
| 37615 | Johnson City | 22,821 | $78k | 6.4 mi |
| 37601 | Johnson City | 38,008 | $51k | 7.2 mi |
| 37618 | Bluff City | 12,548 | $64k | 7.9 mi |
| 37663 | Kingsport | 14,230 | $76k | 7.9 mi |
| 37614 | Johnson City | 2,767 | – | 9.7 mi (near) |
| 37604 | Johnson City | 39,097 | $52k | 9.9 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.
Which other ZIP codes use the name Piney Flats?
1 more ZIP code carries the postal name Piney Flats, TN without a residential delivery area: PO boxes at the post office, or a single organization with its own ZIP code. The Census Bureau publishes no figures for it.
| ZIP | County |
|---|---|
| 37699 | Sullivan County |
Source: GeoNames postal codes (CC BY 4.0), downloaded 2026-10-09; a ZIP code with no Census ZCTA has no residential delivery area.