37012 ZIP Code, Alexandria, TN

37012 is a ZIP code in Alexandria, Tennessee — mostly in DeKalb County (58% of its land), with smaller parts in Wilson and Smith counties. It covers 37 square miles of land. The closest ZIP codes are 38547, 38567 and 37095. 2,118 people live here in 876 households. It is rural, with fewer than 100 people per square mile, and owners and renters are mixed (67% own). Median household income is $49,265, below the Tennessee median of $69,595.

Quick facts

Key figures

MeasureValue
Residents2,118
Households876
Median household income$49,265
Income per person$26,310
Median age38.3
Homeowners66.8%
Median home value$237,600
Median rent$749
Bachelor's degree or higher11.3%
Average commute (minutes)41.9
Households with kids under 1839.0%
Moved in the past year10.2%
Below the poverty line18.2%
Broadband internet79.9%
Speak a non-English language at home1.8%

Household income

% of householdsValue
<$10K2.2%
$10–15K14.8%
$15–25K12.0%
$25–35K5.4%
$35–50K16.8%
$50–75K17.6%
$75–100K7.1%
$100–150K18.0%
$150–200K4.0%
$200K+2.2%

Age

% of all residentsValue
<1015.3%
10–1911.9%
20–244.9%
25–3415.4%
35–4411.0%
45–5412.4%
55–6411.5%
65–7412.3%
75+5.3%

Tenure

% of housing unitsValue
Owned, with mortgage38.7%
Owned outright19.8%
Rented28.9%
Vacant12.6%

Type of building

% of housing unitsValue
Detached house62.9%
Townhome1.7%
2–4 units7.7%
5–19 units3.3%
20+ units0.0%
Mobile / other24.4%

Businesses in 37012

32 business establishments with 378 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

37012 has 2 USPS carrier routes with 1,056 residential and 20 business mailboxes. Open the EDDM route map.

Carrier routes in 37012

37012 has 2 USPS carrier routes (2 rural (R)) with 1,056 residential and 20 business mailboxes. Routes range from 506 homes (R006) to 550 homes (R007); the median route has 528 homes. The Census counted 876 households in 37012 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2490
250–4990
500–7492
750–9990
1,000–1,4990
1,500+0

Best routes in 37012 for…

Most businesses

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

  1. Route R007 — USPS business mailboxes 12, 550 homes
  2. Route R006 — USPS business mailboxes 8, 506 homes

Select these 2 routes on the route map

Every carrier route in 37012

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
R006Rural5068$62,200———
R007Rural55012$74,394———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 37012 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 37012

Where it ranks

Mail every home in 37012

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) 37012, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 37012 in?
37012 is a Alexandria, TN mailing address. By land area, 5% lies inside Alexandria; the rest is outside any Census-defined city or community.
What county is 37012 in?
37012 is mostly in DeKalb County (58% of its land), with smaller parts in Wilson and Smith counties.
What is the population of 37012?
About 2,118 people (±450), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 2,339.
What is the median household income in 37012?
$49,265 (±$9,518), 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 37012?
2 USPS carrier routes with 1,056 residential and 20 business mailboxes (1,075 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 37012?
The closest, measured center to center: 38547 (5.8 mi, South Carthage), 38567 (6.2 mi, Hickman), 37095 (7.7 mi, Liberty), 37184 (7.9 mi, Greenvale), 37059 (8.3 mi, Dowelltown) and 38569 (8.8 mi).

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