03054 ZIP Code, Merrimack, NH

03054 is a ZIP code in Merrimack, New Hampshire in Hillsborough County. It covers 33 square miles of land. The closest ZIP codes are 03052, 03031 and 03063. 28,176 people live here in 10,850 households, more than in 9 of every 10 New Hampshire ZIP codes. With about 865 people per square mile it is lightly settled, and most homes are owner-occupied (89%). Median household income is $127,303, above the New Hampshire median of $99,031.

Quick facts

Key figures

MeasureValue
Residents28,176
Households10,850
Median household income$127,303
Income per person$60,951
Median age41.5
Homeowners88.9%
Median home value$458,700
Median rent$1,932
Bachelor's degree or higher50.2%
Average commute (minutes)26.5
Households with kids under 1829.6%
Moved in the past year8.0%
Below the poverty line3.0%
Broadband internet95.5%
Speak a non-English language at home6.2%

Household income

% of householdsValue
<$10K1.1%
$10–15K0.5%
$15–25K1.1%
$25–35K1.9%
$35–50K4.9%
$50–75K13.6%
$75–100K16.3%
$100–150K19.9%
$150–200K15.8%
$200K+25.0%

Age

% of all residentsValue
<1010.7%
10–1912.5%
20–244.6%
25–3413.5%
35–4413.4%
45–5412.4%
55–6416.1%
65–7411.0%
75+5.7%

Tenure

% of housing unitsValue
Owned, with mortgage61.6%
Owned outright25.4%
Rented10.4%
Vacant2.6%

Type of building

% of housing unitsValue
Detached house66.6%
Townhome17.3%
2–4 units2.0%
5–19 units5.7%
20+ units7.1%
Mobile / other1.3%

Businesses in 03054

755 business establishments with 19,249 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

03054 has 19 USPS carrier routes with 11,825 residential and 689 business mailboxes. Open the EDDM route map.

Carrier routes in 03054

03054 has 19 USPS carrier routes (19 rural (R)) with 11,825 residential and 689 business mailboxes. Routes range from 489 homes (R009) to 892 homes (R016); the median route has 610 homes. The Census counted 10,850 households in 03054 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2490
250–4991
500–74917
750–9991
1,000–1,4990
1,500+0

Best routes in 03054 for…

Most businesses

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

  1. Route R013 — USPS business mailboxes 213, 602 homes
  2. Route R017 — USPS business mailboxes 110, 709 homes
  3. Route R016 — USPS business mailboxes 80, 892 homes
  4. Route R015 — USPS business mailboxes 78, 610 homes
  5. Route R007 — USPS business mailboxes 63, 689 homes

Select these 5 routes on the route map

Every carrier route in 03054

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
R001Rural6751$132,087———
R002Rural5181$200,001+———
R003Rural50347$200,001+———
R005Rural6510$132,087———
R006Rural6731$143,937———
R007Rural68963$123,449———
R008Rural5815$109,686———
R009Rural48944$157,591———
R010Rural5421$184,036———
R011Rural70829$67,084———
R012Rural5421$119,812———
R013Rural602213$113,467———
R014Rural5867$109,686———
R015Rural61078$123,449———
R016Rural89280$70,918———
R017Rural709110$200,001+———
R018Rural6210$184,036———
R019Rural6462$109,686———
R020Rural5886$118,603———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 03054 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 03054

Where it ranks

Mail every home in 03054

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) 03054, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 03054 in?
03054 is a Merrimack, NH mailing address. By land area, 10% lies inside East Merrimack; the rest is outside any Census-defined city or community.
What county is 03054 in?
03054 is in Hillsborough County.
What is the population of 03054?
About 28,176 people (±34), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 26,622.
What is the median household income in 03054?
$127,303 (±$16,120), compared with $99,031 for New Hampshire as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 03054?
19 USPS carrier routes with 11,825 residential and 689 business mailboxes (12,525 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 03054?
The closest, measured center to center: 03052 (2.6 mi), 03031 (4.4 mi, Amherst), 03063 (4.8 mi, Nashua), 03064 (5.5 mi, Nashua), 03110 (5.8 mi) and 03053 (6.8 mi, Londonderry).

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