37327 ZIP Code, Dunlap, TN

37327 is a ZIP code in Dunlap, Tennessee — mostly in Sequatchie County (82% of its land), with smaller parts in Bledsoe and Van Buren counties. It covers 191 square miles of land. The closest ZIP codes are 37365, 37338 and 37339. 13,480 people live here in 4,882 households. It is rural, with fewer than 100 people per square mile, and most homes are owner-occupied (76%). Median household income is $60,584, below the Tennessee median of $69,595.

Quick facts

Key figures

MeasureValue
Residents13,480
Households4,882
Median household income$60,584
Income per person$28,155
Median age42.7
Homeowners75.7%
Median home value$246,000
Median rent$844
Bachelor's degree or higher20.9%
Average commute (minutes)31.1
Households with kids under 1829.0%
Moved in the past year10.6%
Below the poverty line20.3%
Broadband internet83.8%
Speak a non-English language at home3.9%

Household income

% of householdsValue
<$10K6.0%
$10–15K6.6%
$15–25K11.9%
$25–35K5.5%
$35–50K10.7%
$50–75K24.3%
$75–100K12.7%
$100–150K13.1%
$150–200K4.2%
$200K+5.1%

Age

% of all residentsValue
<1011.0%
10–1912.3%
20–245.0%
25–3413.5%
35–4411.1%
45–5411.5%
55–6414.1%
65–7411.2%
75+10.4%

Tenure

% of housing unitsValue
Owned, with mortgage29.8%
Owned outright37.0%
Rented21.5%
Vacant11.7%

Type of building

% of housing unitsValue
Detached house72.0%
Townhome1.4%
2–4 units6.0%
5–19 units2.6%
20+ units0.0%
Mobile / other18.0%

Businesses in 37327

207 business establishments with 2,285 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

37327 has 11 USPS carrier routes with 5,625 residential and 200 business mailboxes. Open the EDDM route map.

Carrier routes in 37327

37327 has 11 USPS carrier routes (7 rural (R), 4 highway contract (H)) with 5,625 residential and 200 business mailboxes. Routes range from 229 homes (R007) to 683 homes (R005); the median route has 514 homes. The Census counted 4,882 households in 37327 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2491
250–4993
500–7497
750–9990
1,000–1,4990
1,500+0

Best routes in 37327 for…

Most businesses

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

  1. Route R004 — USPS business mailboxes 68, 632 homes
  2. Route R005 — USPS business mailboxes 30, 683 homes
  3. Route R002 — USPS business mailboxes 21, 587 homes
  4. Route H063 — USPS business mailboxes 20, 510 homes
  5. Route H065 — USPS business mailboxes 15, 516 homes

Select these 5 routes on the route map

Every carrier route in 37327

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
H063Highway contract51020$56,213———
H065Highway contract51615$63,770———
H067Highway contract60510$56,213———
H068Highway contract4215$63,770———
R001Rural48910$56,213———
R002Rural58721$62,606———
R003Rural5142$56,213———
R004Rural63268$59,500———
R005Rural68330$56,213———
R006Rural4396$62,606———
R007Rural22913$56,213———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 37327 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 37327

Where it ranks

Mail every home in 37327

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) 37327, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 37327 in?
37327 is a Dunlap, TN mailing address. By land area, 6% lies inside Dunlap; the rest is outside any Census-defined city or community.
What county is 37327 in?
37327 is mostly in Sequatchie County (82% of its land), with smaller parts in Bledsoe and Van Buren counties.
What is the population of 37327?
About 13,480 people (±611), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 12,412.
What is the median household income in 37327?
$60,584 (±$5,852), 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 37327?
11 USPS carrier routes with 5,625 residential and 200 business mailboxes (5,824 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 37327?
The closest, measured center to center: 37365 (7.6 mi, Palmer), 37338 (10.5 mi, Graysville), 37339 (13.7 mi, Gruetli-Laager), 37377 (14.2 mi, Signal Mountain), 37379 (14.5 mi, Mowbray Mountain) and 37397 (16 mi, Powells Crossroads).

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