What city is 01904 in?

01904 is a Lynn, MA mailing address. By land area, 100% lies inside Lynn.

What is the population of 01904?

About 21,003 people (±1,906), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 19,944.

What is the median household income in 01904?

$99,614 (±$8,339), 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 01904?

15 USPS carrier routes with 7,169 residential and 351 business mailboxes (7,520 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 01904?

The closest, measured center to center: 01905 (2 mi, Lynn), 01902 (2.1 mi, Lynn), 01901 (2.5 mi, Lynn), 01906 (2.6 mi, Saugus), 01960 (3 mi, Peabody) and 01907 (3.5 mi, Swampscott).

01904 ZIP Code, Lynn, MA

01904 is a ZIP code in Lynn, Massachusetts in Essex County. It covers 4.2 square miles of land. The closest ZIP codes are 01905, 01902 and 01901. 21,003 people live here in 7,169 households. At about 4,948 people per square mile it is built up to city-neighborhood density, and most homes are owner-occupied (82%). Median household income is $99,614, close to the Massachusetts median of $103,960.

Quick facts

Mailing city: Lynn, MA
County: Essex County
Land area: 4.2 sq mi
Population: 21,003
Median household income: $99,614
Carrier routes: 15 (7,169 homes)

Key figures

Measure	Value
Residents	21,003
Households	7,169
Median household income	$99,614
Income per person	$42,883
Median age	40.9
Homeowners	82.4%
Median home value	$560,500
Median rent	$1,822
Bachelor's degree or higher	33.1%
Average commute (minutes)	29.4
Households with kids under 18	34.7%
Moved in the past year	10.8%
Below the poverty line	7.0%
Broadband internet	95.1%
Speak a non-English language at home	38.6%

Household income

% of households	Value
<$10K	2.5%
$10–15K	1.5%
$15–25K	4.9%
$25–35K	2.7%
$35–50K	8.1%
$50–75K	15.8%
$75–100K	14.7%
$100–150K	19.0%
$150–200K	14.7%
$200K+	16.1%

Age

% of all residents	Value
<10	12.4%
10–19	12.0%
20–24	7.3%
25–34	9.8%
35–44	13.9%
45–54	14.4%
55–64	12.8%
65–74	10.5%
75+	6.9%

Tenure

% of housing units	Value
Owned, with mortgage	60.2%
Owned outright	19.1%
Rented	16.5%
Vacant	4.2%

Type of building

% of housing units	Value
Detached house	72.6%
Townhome	1.4%
2–4 units	14.3%
5–19 units	4.1%
20+ units	7.0%
Mobile / other	0.4%

Businesses in 01904

333 business establishments with 2,880 employees (ZIP Codes Business Patterns 2023).

Construction: 78
Administrative and Support and Waste Management and Remediation Services: 51
Health Care and Social Assistance: 46
Retail Trade: 41
Other Services (except Public Administration): 38
Accommodation and Food Services: 30
Finance and Insurance: 11
Professional, Scientific, and Technical Services: 10

EDDM carrier routes

01904 has 15 USPS carrier routes with 7,169 residential and 351 business mailboxes. Open the EDDM route map.

Carrier routes in 01904

01904 has 15 USPS carrier routes (15 city (C)) with 7,169 residential and 351 business mailboxes. Routes range from 301 homes (C027) to 641 homes (C020); the median route has 475 homes. The Census counted 7,169 households in 01904 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	9
500–749	6
750–999	0
1,000–1,499	0
1,500+	0

Best routes in 01904 for…

Most businesses

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

Route C045 — USPS business mailboxes 111, 571 homes
Route C029 — USPS business mailboxes 87, 598 homes
Route C030 — USPS business mailboxes 46, 541 homes
Route C025 — USPS business mailboxes 37, 536 homes
Route C052 — USPS business mailboxes 23, 418 homes

Select these 5 routes on the route map

Every carrier route in 01904

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C020	City	641	4	$63,710	—	—	—
C024	City	451	19	$89,115	—	—	—
C025	City	536	37	$79,888	—	—	—
C026	City	424	5	$150,944	—	—	—
C027	City	301	2	$106,751	—	—	—
C029	City	598	87	$78,235	—	—	—
C030	City	541	46	$89,115	—	—	—
C039	City	329	1	$94,217	—	—	—
C041	City	456	6	$100,640	—	—	—
C043	City	475	0	$142,551	—	—	—
C044	City	441	2	$106,751	—	—	—
C045	City	571	111	$63,710	—	—	—
C047	City	485	3	$142,551	—	—	—
C052	City	418	23	$106,751	—	—	—
C055	City	502	5	$150,944	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 01904 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

01905 — Lynn city, MA (2 mi)
01902 — Lynn city, MA (2.1 mi)
01901 — Lynn city, MA (2.5 mi)
01906 — Saugus CDP, MA (2.6 mi)
01960 — Peabody city, MA (3 mi)
01907 — Swampscott CDP, MA (3.5 mi)
01940 — Lynnfield CDP, MA (4.5 mi)
01880 — Wakefield CDP, MA (4.8 mi)

Areas that include 01904

Where it ranks

Mail every home in 01904

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) 01904, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 01904 in?: 01904 is a Lynn, MA mailing address. By land area, 100% lies inside Lynn.
What county is 01904 in?: 01904 is in Essex County.
What is the population of 01904?: About 21,003 people (±1,906), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 19,944.
What is the median household income in 01904?: $99,614 (±$8,339), 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 01904?: 15 USPS carrier routes with 7,169 residential and 351 business mailboxes (7,520 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 01904?: The closest, measured center to center: 01905 (2 mi, Lynn), 01902 (2.1 mi, Lynn), 01901 (2.5 mi, Lynn), 01906 (2.6 mi, Saugus), 01960 (3 mi, Peabody) and 01907 (3.5 mi, Swampscott).

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