What city is 04021 in?

04021 is a Cumberland Center, ME mailing address. By land area, 21% lies inside Cumberland Center; the rest is outside any Census-defined city or community.

What is the population of 04021?

About 6,990 people (±361), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 6,729.

What is the median household income in 04021?

$172,468 (±$21,006), compared with $74,733 for Maine as a whole. Half the households in the ZIP code earn more and half earn less.

How many carrier routes and mailboxes are in 04021?

6 USPS carrier routes with 2,704 residential and 53 business mailboxes (2,758 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 04021?

The closest, measured center to center: 04105 (3.6 mi, Falmouth), 04097 (3.9 mi), 04096 (5.4 mi, Yarmouth), 04110 (5.4 mi), 04103 (6.8 mi, Portland) and 04062 (7 mi, North Windham).

04021 ZIP Code, Cumberland Center, ME

04021 is a ZIP code in Cumberland Center, Maine in Cumberland County. It covers 21 square miles of land. The closest ZIP codes are 04105, 04097 and 04096. 6,990 people live here in 2,425 households. With about 340 people per square mile it is lightly settled, and most homes are owner-occupied (95%). Median household income is $172,468, well above the Maine median of $74,733; 46% of households have children under 18.

Quick facts

Mailing city: Cumberland Center, ME
County: Cumberland County
Land area: 21 sq mi
Population: 6,990
Median household income: $172,468
Carrier routes: 6 (2,704 homes)

Key figures

Measure	Value
Residents	6,990
Households	2,425
Median household income	$172,468
Income per person	$78,752
Median age	39.1
Homeowners	94.6%
Median home value	$579,000
Median rent	$2,579
Bachelor's degree or higher	71.2%
Average commute (minutes)	24.9
Households with kids under 18	46.1%
Moved in the past year	5.7%
Below the poverty line	3.8%
Broadband internet	96.2%
Speak a non-English language at home	2.1%

Household income

% of households	Value
<$10K	1.6%
$10–15K	0.8%
$15–25K	1.7%
$25–35K	1.1%
$35–50K	2.4%
$50–75K	9.6%
$75–100K	6.0%
$100–150K	20.0%
$150–200K	23.6%
$200K+	33.3%

Age

% of all residents	Value
<10	16.5%
10–19	13.6%
20–24	2.7%
25–34	8.1%
35–44	19.4%
45–54	11.1%
55–64	14.7%
65–74	8.1%
75+	5.8%

Tenure

% of housing units	Value
Owned, with mortgage	63.3%
Owned outright	26.4%
Rented	4.9%
Vacant	5.4%

Type of building

% of housing units	Value
Detached house	88.2%
Townhome	4.2%
2–4 units	4.9%
5–19 units	0.0%
20+ units	0.0%
Mobile / other	2.5%

Businesses in 04021

181 business establishments with 1,821 employees (ZIP Codes Business Patterns 2023).

Professional, Scientific, and Technical Services: 39
Construction: 32
Retail Trade: 18
Administrative and Support and Waste Management and Remediation Services: 17
Other Services (except Public Administration): 15
Health Care and Social Assistance: 14
Real Estate and Rental and Leasing: 11
Accommodation and Food Services: 9

EDDM carrier routes

04021 has 6 USPS carrier routes with 2,704 residential and 53 business mailboxes. Open the EDDM route map.

Carrier routes in 04021

04021 has 6 USPS carrier routes (6 rural (R)) with 2,704 residential and 53 business mailboxes. Routes range from 96 homes (R016) to 557 homes (R013); the median route has 512 homes. The Census counted 2,425 households in 04021 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	1
250–499	0
500–749	5
750–999	0
1,000–1,499	0
1,500+	0

Best routes in 04021 for…

Most businesses

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

Route R011 — USPS business mailboxes 21, 525 homes
Route R013 — USPS business mailboxes 12, 557 homes
Route R012 — USPS business mailboxes 7, 516 homes
Route R014 — USPS business mailboxes 5, 508 homes
Route R015 — USPS business mailboxes 5, 502 homes

Select these 5 routes on the route map

Every carrier route in 04021

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
R011	Rural	525	21	$160,425	—	—	—
R012	Rural	516	7	$164,881	—	—	—
R013	Rural	557	12	$165,277	—	—	—
R014	Rural	508	5	$141,300	—	—	—
R015	Rural	502	5	$171,801	—	—	—
R016	Rural	96	3	$171,801	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 04021 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

04105 — Falmouth CDP, ME (3.6 mi)
04097 (3.9 mi)
04096 — Yarmouth CDP, ME (5.4 mi)
04110 (5.4 mi)
04103 — Portland city, ME (6.8 mi)
04062 — North Windham CDP, ME (7 mi)
04092 — Westbrook city, ME (7.3 mi)
04069 (8.8 mi)

Areas that include 04021

Cumberland Center, ME ZIP codes — 1 ZIP code
Cumberland County ZIP codes — 38 ZIP codes
Maine ZIP code data

Where it ranks

Mail every home in 04021

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) 04021, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 04021 in?: 04021 is a Cumberland Center, ME mailing address. By land area, 21% lies inside Cumberland Center; the rest is outside any Census-defined city or community.
What county is 04021 in?: 04021 is in Cumberland County.
What is the population of 04021?: About 6,990 people (±361), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 6,729.
What is the median household income in 04021?: $172,468 (±$21,006), compared with $74,733 for Maine as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 04021?: 6 USPS carrier routes with 2,704 residential and 53 business mailboxes (2,758 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 04021?: The closest, measured center to center: 04105 (3.6 mi, Falmouth), 04097 (3.9 mi), 04096 (5.4 mi, Yarmouth), 04110 (5.4 mi), 04103 (6.8 mi, Portland) and 04062 (7 mi, North Windham).

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