37660 ZIP Code, Kingsport, TN

37660 is a ZIP code in Kingsport, Tennessee — mostly in Sullivan County (91% of its land), with smaller parts in Hawkins County. It covers 66 square miles of land. The closest ZIP codes are 37665, 37664 and 37645. 40,996 people live here in 18,500 households, more than in 9 of every 10 Tennessee ZIP codes. With about 624 people per square mile it is lightly settled, and owners and renters are mixed (61% own). Median household income is $49,191, below the Tennessee median of $69,595.

Quick facts

Key figures

MeasureValue
Residents40,996
Households18,500
Median household income$49,191
Income per person$32,908
Median age44
Homeowners60.8%
Median home value$198,500
Median rent$883
Bachelor's degree or higher22.7%
Average commute (minutes)21
Households with kids under 1823.1%
Moved in the past year13.3%
Below the poverty line24.0%
Broadband internet87.3%
Speak a non-English language at home2.8%

Household income

% of householdsValue
<$10K5.9%
$10–15K7.1%
$15–25K13.1%
$25–35K11.0%
$35–50K13.5%
$50–75K16.6%
$75–100K9.9%
$100–150K13.2%
$150–200K4.9%
$200K+4.7%

Age

% of all residentsValue
<109.2%
10–1911.3%
20–247.3%
25–3411.1%
35–4412.5%
45–5412.8%
55–6412.7%
65–7411.9%
75+11.1%

Tenure

% of housing unitsValue
Owned, with mortgage24.5%
Owned outright29.4%
Rented34.3%
Vacant11.8%

Type of building

% of housing unitsValue
Detached house59.2%
Townhome3.2%
2–4 units8.9%
5–19 units14.2%
20+ units5.9%
Mobile / other8.8%

Businesses in 37660

1,136 business establishments with 28,390 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

37660 has 34 USPS carrier routes with 19,731 residential and 1,762 business mailboxes. Open the EDDM route map.

Carrier routes in 37660

37660 has 34 USPS carrier routes (24 city (C), 10 rural (R)) with 19,731 residential and 1,762 business mailboxes. Routes range from 90 homes (C001) to 851 homes (C019); the median route has 636 homes. The Census counted 18,500 households in 37660 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2492
250–4997
500–74919
750–9996
1,000–1,4990
1,500+0

Best routes in 37660 for…

Most businesses

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

  1. Route C001 — USPS business mailboxes 302, 90 homes
  2. Route C021 — USPS business mailboxes 167, 315 homes
  3. Route R001 — USPS business mailboxes 119, 376 homes
  4. Route C014 — USPS business mailboxes 114, 521 homes
  5. Route R019 — USPS business mailboxes 112, 769 homes

Select these 5 routes on the route map

Every carrier route in 37660

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C001City90302$80,334———
C002City76340$27,665———
C003City76140$70,989———
C004City5374$80,334———
C005City7018$55,621———
C009City50910$53,995———
C010City38939$50,858———
C011City83024$41,365———
C012City36813$41,365———
C013City34120$34,683———
C014City521114$50,858———
C015City1352$34,683———
C016City79742$59,902———
C017City70911$45,325———
C018City4991$75,161———
C019City85128$35,611———
C020City65997$50,641———
C021City315167$50,641———
C022City555108$24,833———
C024City50120$36,350———
C030City65540$104,244———
C031City64148$50,858———
C032City49351$53,995———
C036City65258$44,816———
R001Rural376119$50,641———
R002Rural69812$59,568———
R004Rural54125$46,096———
R005Rural63042$65,179———
R006Rural6844$14,340———
R007Rural6286$47,510———
R015Rural72093$73,459———
R019Rural769112$57,449———
R024Rural72355$35,611———
R033Rural6907$60,586———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 37660 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

Areas that include 37660

Where it ranks

Mail every home in 37660

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) 37660, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 37660 in?
37660 is a Kingsport, TN mailing address. By land area, 38% lies inside Kingsport, 15% lies inside Bloomingdale and 4% lies inside Sullivan Gardens; the rest is outside any Census-defined city or community.
What county is 37660 in?
37660 is mostly in Sullivan County (91% of its land), with smaller parts in Hawkins County.
What is the population of 37660?
About 40,996 people (±1,738), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 39,479.
What is the median household income in 37660?
$49,191 (±$2,935), 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 37660?
34 USPS carrier routes with 19,731 residential and 1,762 business mailboxes (21,496 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 37660?
The closest, measured center to center: 37665 (3.6 mi, Kingsport), 37664 (3.7 mi, Kingsport), 37645 (5.6 mi, Mount Carmel), 24290 (6.2 mi, Weber City), 37663 (6.4 mi, Kingsport) and 37642 (8.6 mi, Church Hill).

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