What city is 37686 in?

37686 is a Piney Flats, TN mailing address. By land area, 2% lies inside Johnson City; the rest is outside any Census-defined city or community.

What is the population of 37686?

About 9,495 people (±1,407), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 8,207.

What is the median household income in 37686?

$84,264 (±$10,546), compared with $69,595 for Tennessee as a whole. Half the households in the ZIP code earn more and half earn less.

How many carrier routes and mailboxes are in 37686?

6 USPS carrier routes with 4,223 residential and 186 business mailboxes (4,409 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 37686?

The closest, measured center to center: 37694 (5.5 mi, Watauga), 37617 (5.9 mi, Blountville), 37615 (6.4 mi, Johnson City), 37601 (7.2 mi, Johnson City), 37618 (7.9 mi, Bristol) and 37663 (7.9 mi, Kingsport).

37686 ZIP Code, Piney Flats, TN

37686 is a ZIP code in Piney Flats, Tennessee in Sullivan County. It covers 30 square miles of land. The closest ZIP codes are 37694, 37617 and 37615. 9,495 people live here in 3,659 households. With about 322 people per square mile it is lightly settled, and most homes are owner-occupied (77%). Median household income is $84,264, above the Tennessee median of $69,595.

Quick facts

Mailing city: Piney Flats, TN
County: Sullivan County
Land area: 30 sq mi
Population: 9,495
Median household income: $84,264
Carrier routes: 6 (4,223 homes)

Key figures

Measure	Value
Residents	9,495
Households	3,659
Median household income	$84,264
Income per person	$43,900
Median age	44.1
Homeowners	76.5%
Median home value	$352,200
Median rent	$1,032
Bachelor's degree or higher	35.5%
Average commute (minutes)	23.8
Households with kids under 18	28.0%
Moved in the past year	11.3%
Below the poverty line	5.4%
Broadband internet	90.9%
Speak a non-English language at home	3.4%

Household income

% of households	Value
<$10K	2.7%
$10–15K	2.0%
$15–25K	5.3%
$25–35K	5.0%
$35–50K	10.2%
$50–75K	16.3%
$75–100K	16.3%
$100–150K	14.8%
$150–200K	14.3%
$200K+	13.1%

Age

% of all residents	Value
<10	7.4%
10–19	13.1%
20–24	8.0%
25–34	10.5%
35–44	12.6%
45–54	18.4%
55–64	13.7%
65–74	11.2%
75+	5.2%

Tenure

% of housing units	Value
Owned, with mortgage	39.4%
Owned outright	31.7%
Rented	21.7%
Vacant	7.2%

Type of building

% of housing units	Value
Detached house	74.9%
Townhome	2.5%
2–4 units	1.7%
5–19 units	7.7%
20+ units	1.7%
Mobile / other	11.5%

Businesses in 37686

162 business establishments with 3,302 employees (ZIP Codes Business Patterns 2023).

Retail Trade: 23
Manufacturing: 21
Construction: 20
Wholesale Trade: 18
Other Services (except Public Administration): 13
Professional, Scientific, and Technical Services: 11
Administrative and Support and Waste Management and Remediation Services: 11
Transportation and Warehousing: 10

EDDM carrier routes

37686 has 6 USPS carrier routes with 4,223 residential and 186 business mailboxes. Open the EDDM route map.

Carrier routes in 37686

37686 has 6 USPS carrier routes (6 rural (R)) with 4,223 residential and 186 business mailboxes. Routes range from 593 homes (R156) to 796 homes (R153); the median route has 699 homes. The Census counted 3,659 households in 37686 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	0
500–749	4
750–999	2
1,000–1,499	0
1,500+	0

Best routes in 37686 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

Route R155 — USPS business mailboxes 105, 708 homes
Route R153 — USPS business mailboxes 62, 796 homes
Route R152 — USPS business mailboxes 7, 690 homes
Route R154 — USPS business mailboxes 6, 683 homes
Route R151 — USPS business mailboxes 5, 753 homes

Select these 5 routes on the route map

Every carrier route in 37686

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
R151	Rural	753	5	$90,265	—	—	—
R152	Rural	690	7	$129,905	—	—	—
R153	Rural	796	62	$64,536	—	—	—
R154	Rural	683	6	$129,905	—	—	—
R155	Rural	708	105	$64,536	—	—	—
R156	Rural	593	1	$129,905	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 37686 on the EDDM route map.

How route demographics are estimated

Mailbox counts come from USPS; demographics are estimates

The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).

How a route gets its figures: the block-group length-share method

We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.

Margins of error

Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.

Different years

USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.

Why some routes show identical figures

Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.

Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Nearby ZIP codes

37694 — Watauga city, TN (5.5 mi)
37617 — Blountville CDP, TN (5.9 mi)
37615 — Johnson City city, TN (6.4 mi)
37601 — Johnson City city, TN (7.2 mi)
37618 — Bristol city, TN (7.9 mi)
37663 — Kingsport city, TN (7.9 mi)
37614 — Johnson City city, TN (9.7 mi)
37604 — Johnson City city, TN (9.9 mi)

Areas that include 37686

Where it ranks

Mail every home in 37686

Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 37686, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 37686 in?: 37686 is a Piney Flats, TN mailing address. By land area, 2% lies inside Johnson City; the rest is outside any Census-defined city or community.
What county is 37686 in?: 37686 is in Sullivan County.
What is the population of 37686?: About 9,495 people (±1,407), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 8,207.
What is the median household income in 37686?: $84,264 (±$10,546), compared with $69,595 for Tennessee as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 37686?: 6 USPS carrier routes with 4,223 residential and 186 business mailboxes (4,409 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 37686?: The closest, measured center to center: 37694 (5.5 mi, Watauga), 37617 (5.9 mi, Blountville), 37615 (6.4 mi, Johnson City), 37601 (7.2 mi, Johnson City), 37618 (7.9 mi, Bristol) and 37663 (7.9 mi, Kingsport).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.