What city is 37377 in?

37377 is a Signal Mountain, TN mailing address. By land area, 10% lies inside Signal Mountain, 8% lies inside Lone Oak, 5% lies inside Fairmount and 4% lies inside Walden; the rest is outside any Census-defined city or community.

What is the population of 37377?

About 17,188 people (±663), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 17,004.

What is the median household income in 37377?

$119,636 (±$4,831), 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 37377?

16 USPS carrier routes with 7,217 residential and 181 business mailboxes (7,398 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 37377?

The closest, measured center to center: 37405 (5.8 mi, Chattanooga), 37415 (7.6 mi, Chattanooga), 37397 (8.8 mi, Powells Crossroads), 37343 (9 mi, Chattanooga), 37351 (9.6 mi, Chattanooga) and 37379 (10.7 mi, Mowbray Mountain).

37377 ZIP Code, Signal Mountain, TN

Q: What county is 37377 in?

37377 is mostly in Hamilton County (50% of its land), with smaller parts in Sequatchie and Marion counties.

37377 is a ZIP code in Signal Mountain, Tennessee — mostly in Hamilton County (50% of its land), with smaller parts in Sequatchie and Marion counties. It covers 80 square miles of land. The closest ZIP codes are 37405, 37415 and 37397. 17,188 people live here in 6,406 households. With about 214 people per square mile it is lightly settled, and most homes are owner-occupied (86%). Median household income is $119,636, well above the Tennessee median of $69,595; the median age is 45.0, older than most ZIP codes.

Quick facts

Mailing city: Signal Mountain, TN
County: Hamilton County
Land area: 80 sq mi
Population: 17,188
Median household income: $119,636
Carrier routes: 16 (7,217 homes)

Key figures

Measure	Value
Residents	17,188
Households	6,406
Median household income	$119,636
Income per person	$68,322
Median age	45
Homeowners	85.9%
Median home value	$529,500
Median rent	$1,614
Bachelor's degree or higher	59.0%
Average commute (minutes)	27.9
Households with kids under 18	35.0%
Moved in the past year	8.4%
Below the poverty line	5.2%
Broadband internet	91.7%
Speak a non-English language at home	2.9%

Household income

% of households	Value
<$10K	2.6%
$10–15K	1.8%
$15–25K	3.7%
$25–35K	4.2%
$35–50K	5.1%
$50–75K	12.5%
$75–100K	9.2%
$100–150K	22.0%
$150–200K	8.2%
$200K+	30.7%

Age

% of all residents	Value
<10	12.6%
10–19	15.1%
20–24	1.9%
25–34	5.6%
35–44	14.7%
45–54	14.0%
55–64	12.8%
65–74	12.6%
75+	10.7%

Tenure

% of housing units	Value
Owned, with mortgage	46.7%
Owned outright	35.0%
Rented	13.1%
Vacant	5.2%

Type of building

% of housing units	Value
Detached house	90.2%
Townhome	1.1%
2–4 units	1.4%
5–19 units	0.6%
20+ units	3.4%
Mobile / other	3.3%

Businesses in 37377

236 business establishments with 1,828 employees (ZIP Codes Business Patterns 2023).

Health Care and Social Assistance: 31
Other Services (except Public Administration): 29
Construction: 25
Administrative and Support and Waste Management and Remediation Services: 25
Professional, Scientific, and Technical Services: 24
Retail Trade: 22
Accommodation and Food Services: 17
Finance and Insurance: 13

EDDM carrier routes

37377 has 16 USPS carrier routes with 7,217 residential and 181 business mailboxes. Open the EDDM route map.

Carrier routes in 37377

37377 has 16 USPS carrier routes (7 city (C), 9 rural (R)) with 7,217 residential and 181 business mailboxes. Routes range from 208 homes (R009) to 567 homes (R007); the median route has 440 homes. The Census counted 6,406 households in 37377 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	1
250–499	11
500–749	4
750–999	0
1,000–1,499	0
1,500+	0

Best routes in 37377 for…

Most businesses

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

Route C005 — USPS business mailboxes 39, 421 homes
Route R007 — USPS business mailboxes 35, 567 homes
Route C002 — USPS business mailboxes 19, 405 homes
Route C006 — USPS business mailboxes 16, 525 homes
Route R008 — USPS business mailboxes 15, 443 homes

Select these 5 routes on the route map

Every carrier route in 37377

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	423	6	$163,030	—	—	—
C002	City	405	19	$136,445	—	—	—
C003	City	480	0	$136,445	—	—	—
C004	City	544	1	$119,031	—	—	—
C005	City	421	39	$137,412	—	—	—
C006	City	525	16	$137,412	—	—	—
C007	City	481	14	$75,341	—	—	—
R001	Rural	427	0	$170,471	—	—	—
R002	Rural	437	7	$169,556	—	—	—
R003	Rural	546	5	$136,445	—	—	—
R004	Rural	460	11	$166,087	—	—	—
R005	Rural	432	6	$130,776	—	—	—
R006	Rural	418	2	$170,471	—	—	—
R007	Rural	567	35	$130,776	—	—	—
R008	Rural	443	15	$75,341	—	—	—
R009	Rural	208	5	$130,776	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 37377 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

37405 — Chattanooga city, TN (5.8 mi)
37415 — Chattanooga city, TN (7.6 mi)
37397 — Powells Crossroads town, TN (8.8 mi)
37343 — Chattanooga city, TN (9 mi)
37351 — Chattanooga city, TN (9.6 mi)
37379 — Mowbray Mountain CDP, TN (10.7 mi)
37419 — Chattanooga city, TN (11.6 mi)
37450 — Chattanooga city, TN (11.6 mi)

Areas that include 37377

Signal Mountain, TN ZIP codes — 1 ZIP code
Fairmount, TN ZIP codes — 1 ZIP code
Walden, TN ZIP codes — 1 ZIP code
Lone Oak, TN ZIP codes — 1 ZIP code
Hamilton County ZIP codes — 31 ZIP codes
Sequatchie County ZIP codes — 5 ZIP codes
Tennessee ZIP code data

Where it ranks

Mail every home in 37377

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) 37377, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 37377 in?: 37377 is a Signal Mountain, TN mailing address. By land area, 10% lies inside Signal Mountain, 8% lies inside Lone Oak, 5% lies inside Fairmount and 4% lies inside Walden; the rest is outside any Census-defined city or community.
What county is 37377 in?: 37377 is mostly in Hamilton County (50% of its land), with smaller parts in Sequatchie and Marion counties.
What is the population of 37377?: About 17,188 people (±663), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 17,004.
What is the median household income in 37377?: $119,636 (±$4,831), 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 37377?: 16 USPS carrier routes with 7,217 residential and 181 business mailboxes (7,398 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 37377?: The closest, measured center to center: 37405 (5.8 mi, Chattanooga), 37415 (7.6 mi, Chattanooga), 37397 (8.8 mi, Powells Crossroads), 37343 (9 mi, Chattanooga), 37351 (9.6 mi, Chattanooga) and 37379 (10.7 mi, Mowbray Mountain).

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