What city is 01945 in?

01945 is a Marblehead, MA mailing address. By land area, 99% lies inside Marblehead and 1% lies inside Salem.

What is the population of 01945?

About 20,470 people (±52), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 20,462.

What is the median household income in 01945?

$179,583 (±$27,830), compared with $103,960 for Massachusetts as a whole. Half the households in the ZIP code earn more and half earn less.

How many carrier routes and mailboxes are in 01945?

29 USPS carrier routes with 8,793 residential and 647 business mailboxes (9,441 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 01945?

The closest, measured center to center: 01970 (1.9 mi, Salem), 01907 (3.5 mi, Swampscott), 01965 (4.4 mi, Beverly), 01915 (4.6 mi, Beverly), 01902 (5.1 mi, Lynn) and 01901 (5.7 mi, Lynn).

01945 ZIP Code, Marblehead, MA

01945 is a ZIP code in Marblehead, Massachusetts in Essex County. It covers 4.4 square miles of land. The closest ZIP codes are 01970, 01907 and 01965. 20,470 people live here in 8,334 households. At about 4,621 people per square mile it is built up to city-neighborhood density, and most homes are owner-occupied (85%). Median household income is $179,583, well above the Massachusetts median of $103,960; the median age is 49.2, older than most ZIP codes.

Quick facts

Mailing city: Marblehead, MA
County: Essex County
Land area: 4.4 sq mi
Population: 20,470
Median household income: $179,583
Carrier routes: 29 (8,793 homes)

Key figures

Measure	Value
Residents	20,470
Households	8,334
Median household income	$179,583
Income per person	$103,886
Median age	49.2
Homeowners	85.3%
Median home value	$942,200
Median rent	$1,764
Bachelor's degree or higher	78.1%
Average commute (minutes)	32.9
Households with kids under 18	30.5%
Moved in the past year	6.0%
Below the poverty line	4.4%
Broadband internet	95.8%
Speak a non-English language at home	7.6%

Household income

% of households	Value
<$10K	2.9%
$10–15K	2.7%
$15–25K	3.0%
$25–35K	2.0%
$35–50K	5.4%
$50–75K	6.7%
$75–100K	5.9%
$100–150K	15.2%
$150–200K	9.3%
$200K+	47.0%

Age

% of all residents	Value
<10	7.7%
10–19	16.5%
20–24	3.6%
25–34	6.6%
35–44	11.0%
45–54	14.9%
55–64	16.7%
65–74	13.6%
75+	9.4%

Tenure

% of housing units	Value
Owned, with mortgage	53.6%
Owned outright	24.7%
Rented	13.1%
Vacant	8.6%

Type of building

% of housing units	Value
Detached house	76.6%
Townhome	4.0%
2–4 units	12.8%
5–19 units	5.6%
20+ units	0.7%
Mobile / other	0.3%

Businesses in 01945

572 business establishments with 3,948 employees (ZIP Codes Business Patterns 2023).

Professional, Scientific, and Technical Services: 81
Retail Trade: 74
Other Services (except Public Administration): 70
Construction: 65
Health Care and Social Assistance: 53
Accommodation and Food Services: 46
Finance and Insurance: 34
Administrative and Support and Waste Management and Remediation Services: 34

EDDM carrier routes

01945 has 29 USPS carrier routes with 8,793 residential and 647 business mailboxes. Open the EDDM route map.

Carrier routes in 01945

01945 has 29 USPS carrier routes (29 city (C)) with 8,793 residential and 647 business mailboxes. Routes range from 176 homes (C011) to 427 homes (C026); the median route has 298 homes. The Census counted 8,334 households in 01945 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	5
250–499	24
500–749	0
750–999	0
1,000–1,499	0
1,500+	0

Best routes in 01945 for…

Most businesses

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

Route C024 — USPS business mailboxes 172, 330 homes
Route C043 — USPS business mailboxes 131, 396 homes
Route C001 — USPS business mailboxes 80, 362 homes
Route C005 — USPS business mailboxes 56, 364 homes
Route C029 — USPS business mailboxes 39, 322 homes

Select these 5 routes on the route map

Every carrier route in 01945

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	362	80	$200,001+	—	—	—
C002	City	347	12	$200,001+	—	—	—
C003	City	275	12	$111,365	—	—	—
C005	City	364	56	$104,072	—	—	—
C006	City	376	18	$127,285	—	—	—
C008	City	284	0	$127,285	—	—	—
C009	City	364	15	$104,072	—	—	—
C010	City	333	3	$200,001+	—	—	—
C011	City	176	3	$200,001+	—	—	—
C012	City	195	2	$200,001+	—	—	—
C013	City	298	3	$200,001+	—	—	—
C015	City	264	0	$200,000+	—	—	—
C017	City	282	11	$200,000+	—	—	—
C018	City	313	1	$200,001+	—	—	—
C019	City	203	2	$200,001+	—	—	—
C020	City	264	4	$200,001+	—	—	—
C021	City	251	2	$200,001+	—	—	—
C022	City	333	20	$200,001+	—	—	—
C023	City	273	1	$200,001+	—	—	—
C024	City	330	172	$104,072	—	—	—
C025	City	269	1	$169,908	—	—	—
C026	City	427	2	$200,001+	—	—	—
C027	City	245	4	$200,001+	—	—	—
C029	City	322	39	$127,285	—	—	—
C040	City	364	0	$127,285	—	—	—
C041	City	380	23	$67,513	—	—	—
C042	City	211	14	$187,009	—	—	—
C043	City	396	131	$104,072	—	—	—
C044	City	292	16	$67,513	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 01945 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

01970 — Salem city, MA (1.9 mi)
01907 — Swampscott CDP, MA (3.5 mi)
01965 — Beverly city, MA (4.4 mi)
01915 — Beverly city, MA (4.6 mi)
01902 — Lynn city, MA (5.1 mi)
01901 — Lynn city, MA (5.7 mi)
01904 — Lynn city, MA (6.2 mi)
01960 — Peabody city, MA (6.4 mi)

Areas that include 01945

Where it ranks

Mail every home in 01945

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) 01945, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 01945 in?: 01945 is a Marblehead, MA mailing address. By land area, 99% lies inside Marblehead and 1% lies inside Salem.
What county is 01945 in?: 01945 is in Essex County.
What is the population of 01945?: About 20,470 people (±52), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 20,462.
What is the median household income in 01945?: $179,583 (±$27,830), compared with $103,960 for Massachusetts as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 01945?: 29 USPS carrier routes with 8,793 residential and 647 business mailboxes (9,441 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 01945?: The closest, measured center to center: 01970 (1.9 mi, Salem), 01907 (3.5 mi, Swampscott), 01965 (4.4 mi, Beverly), 01915 (4.6 mi, Beverly), 01902 (5.1 mi, Lynn) and 01901 (5.7 mi, Lynn).

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