What city is 37742 in?

37742 is a Greenback, TN mailing address. By land area, 17% lies inside Greenback; the rest is outside any Census-defined city or community.

What is the population of 37742?

About 7,046 people (±1,054), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 6,160.

What is the median household income in 37742?

$88,983 (±$9,398), 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 37742?

6 USPS carrier routes with 2,823 residential and 40 business mailboxes (2,860 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 37742?

The closest, measured center to center: 37801 (5.6 mi, Maryville), 37737 (6.8 mi, Friendsville), 37772 (8.3 mi, Lenoir City), 37774 (10.7 mi, Loudon), 37803 (11.2 mi, Maryville) and 37777 (12.4 mi, Louisville).

37742 ZIP Code, Greenback, TN

Q: What county is 37742 in?

37742 is mostly in Loudon County (68% of its land), with smaller parts in Blount County.

37742 is a ZIP code in Greenback, Tennessee — mostly in Loudon County (68% of its land), with smaller parts in Blount County. It covers 49 square miles of land. The closest ZIP codes are 37801, 37737 and 37772. 7,046 people live here in 2,662 households. With about 143 people per square mile it is lightly settled, and most homes are owner-occupied (92%). Median household income is $88,983, above the Tennessee median of $69,595.

Quick facts

Mailing city: Greenback, TN
County: Loudon County
Land area: 49 sq mi
Population: 7,046
Median household income: $88,983
Carrier routes: 6 (2,823 homes)

Key figures

Measure	Value
Residents	7,046
Households	2,662
Median household income	$88,983
Income per person	$40,000
Median age	42.2
Homeowners	91.9%
Median home value	$301,800
Median rent	$1,054
Bachelor's degree or higher	15.2%
Average commute (minutes)	30.1
Households with kids under 18	34.0%
Moved in the past year	4.8%
Below the poverty line	8.2%
Broadband internet	87.0%
Speak a non-English language at home	0.5%

Household income

% of households	Value
<$10K	4.2%
$10–15K	0.9%
$15–25K	3.0%
$25–35K	2.3%
$35–50K	12.1%
$50–75K	18.6%
$75–100K	16.8%
$100–150K	27.0%
$150–200K	9.2%
$200K+	5.9%

Age

% of all residents	Value
<10	12.6%
10–19	7.1%
20–24	5.1%
25–34	16.8%
35–44	11.4%
45–54	15.1%
55–64	13.7%
65–74	12.0%
75+	6.3%

Tenure

% of housing units	Value
Owned, with mortgage	48.9%
Owned outright	36.3%
Rented	7.4%
Vacant	7.4%

Type of building

% of housing units	Value
Detached house	82.3%
Townhome	0.5%
2–4 units	0.0%
5–19 units	0.0%
20+ units	0.0%
Mobile / other	17.2%

Businesses in 37742

52 business establishments with 281 employees (ZIP Codes Business Patterns 2023).

Construction: 11
Other Services (except Public Administration): 8
Retail Trade: 6
Administrative and Support and Waste Management and Remediation Services: 6
Manufacturing: 4
Professional, Scientific, and Technical Services: 4

EDDM carrier routes

37742 has 6 USPS carrier routes with 2,823 residential and 40 business mailboxes. Open the EDDM route map.

Carrier routes in 37742

37742 has 6 USPS carrier routes (6 rural (R)) with 2,823 residential and 40 business mailboxes. Routes range from 165 homes (R006) to 581 homes (R002); the median route has 541 homes. The Census counted 2,662 households in 37742 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

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

Best routes in 37742 for…

Most businesses

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

Route R005 — USPS business mailboxes 17, 440 homes
Route R004 — USPS business mailboxes 10, 554 homes
Route R002 — USPS business mailboxes 6, 581 homes
Route R001 — USPS business mailboxes 5, 527 homes
Route R003 — USPS business mailboxes 2, 556 homes

Select these 5 routes on the route map

Every carrier route in 37742

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
R001	Rural	527	5	$80,498	—	—	—
R002	Rural	581	6	$94,225	—	—	—
R003	Rural	556	2	$94,225	—	—	—
R004	Rural	554	10	$81,765	—	—	—
R005	Rural	440	17	$94,225	—	—	—
R006	Rural	165	0	$94,225	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 37742 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

37801 — Maryville city, TN (5.6 mi)
37737 — Friendsville city, TN (6.8 mi)
37772 — Lenoir City city, TN (8.3 mi)
37774 — Loudon city, TN (10.7 mi)
37803 — Maryville city, TN (11.2 mi)
37777 — Louisville city, TN (12.4 mi)
37878 (12.4 mi)
37885 — Vonore town, TN (12.4 mi)

Areas that include 37742

Where it ranks

Mail every home in 37742

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) 37742, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 37742 in?: 37742 is a Greenback, TN mailing address. By land area, 17% lies inside Greenback; the rest is outside any Census-defined city or community.
What county is 37742 in?: 37742 is mostly in Loudon County (68% of its land), with smaller parts in Blount County.
What is the population of 37742?: About 7,046 people (±1,054), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 6,160.
What is the median household income in 37742?: $88,983 (±$9,398), 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 37742?: 6 USPS carrier routes with 2,823 residential and 40 business mailboxes (2,860 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 37742?: The closest, measured center to center: 37801 (5.6 mi, Maryville), 37737 (6.8 mi, Friendsville), 37772 (8.3 mi, Lenoir City), 37774 (10.7 mi, Loudon), 37803 (11.2 mi, Maryville) and 37777 (12.4 mi, Louisville).

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