What city is 03103 in?

03103 is a Manchester, NH mailing address. By land area, 97% lies inside Manchester.

What county is 03103 in?

03103 is in Hillsborough County.

What is the population of 03103?

About 37,775 people (±1,913), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 38,039.

What is the median household income in 03103?

$73,540 (±$5,580), 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 03103?

31 USPS carrier routes with 15,277 residential and 1,326 business mailboxes (16,600 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 03103?

The closest, measured center to center: 03109 (2.2 mi, Manchester), 03101 (2.6 mi, Manchester), 03104 (3.7 mi, Manchester), 03102 (4.6 mi, Manchester), 03032 (4.7 mi) and 03110 (5 mi).

03103 ZIP Code, Manchester, NH

03103 is a ZIP code in Manchester, New Hampshire in Hillsborough County. It covers 9.2 square miles of land. The closest ZIP codes are 03109, 03101 and 03104. 37,775 people live here in 15,217 households, which puts it among the most populous 1% of New Hampshire ZIP codes. At about 4,112 people per square mile it is built up to city-neighborhood density, and owners and renters are mixed (49% own). Median household income is $73,540, below the New Hampshire median of $99,031.

Quick facts

Mailing city: Manchester, NH
County: Hillsborough County
Land area: 9.2 sq mi
Population: 37,775
Median household income: $73,540
Carrier routes: 31 (15,277 homes)

Key figures

Measure	Value
Residents	37,775
Households	15,217
Median household income	$73,540
Income per person	$36,947
Median age	38.3
Homeowners	49.3%
Median home value	$342,200
Median rent	$1,436
Bachelor's degree or higher	23.8%
Average commute (minutes)	23.8
Households with kids under 18	28.3%
Moved in the past year	15.5%
Below the poverty line	13.8%
Broadband internet	90.9%
Speak a non-English language at home	29.1%

Household income

% of households	Value
<$10K	3.1%
$10–15K	4.0%
$15–25K	6.5%
$25–35K	6.2%
$35–50K	12.4%
$50–75K	19.2%
$75–100K	14.7%
$100–150K	18.0%
$150–200K	9.6%
$200K+	6.4%

Age

% of all residents	Value
<10	9.4%
10–19	12.1%
20–24	5.9%
25–34	18.2%
35–44	14.9%
45–54	12.5%
55–64	13.1%
65–74	8.1%
75+	5.8%

Tenure

% of housing units	Value
Owned, with mortgage	31.4%
Owned outright	15.9%
Rented	47.4%
Vacant	5.3%

Type of building

% of housing units	Value
Detached house	38.2%
Townhome	4.3%
2–4 units	35.9%
5–19 units	11.8%
20+ units	9.3%
Mobile / other	0.4%

Businesses in 03103

1,090 business establishments with 23,480 employees (ZIP Codes Business Patterns 2023).

Retail Trade: 242
Other Services (except Public Administration): 133
Accommodation and Food Services: 117
Health Care and Social Assistance: 101
Construction: 94
Real Estate and Rental and Leasing: 59
Wholesale Trade: 55
Administrative and Support and Waste Management and Remediation Services: 54

EDDM carrier routes

03103 has 31 USPS carrier routes with 15,277 residential and 1,326 business mailboxes. Open the EDDM route map.

Carrier routes in 03103

03103 has 31 USPS carrier routes (30 city (C), 1 rural (R)) with 15,277 residential and 1,326 business mailboxes. Routes range from 136 homes (C020) to 811 homes (C003); the median route has 472 homes. The Census counted 15,217 households in 03103 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	3
250–499	15
500–749	11
750–999	2
1,000–1,499	0
1,500+	0

Best routes in 03103 for…

Most businesses

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

Route C020 — USPS business mailboxes 272, 136 homes
Route C022 — USPS business mailboxes 160, 227 homes
Route C041 — USPS business mailboxes 152, 265 homes
Route C026 — USPS business mailboxes 63, 426 homes
Route C047 — USPS business mailboxes 62, 675 homes

Select these 5 routes on the route map

Every carrier route in 03103

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	667	42	$34,068	—	—	—
C003	City	811	46	$36,598	—	—	—
C005	City	646	30	$36,598	—	—	—
C008	City	404	5	$96,068	—	—	—
C009	City	472	23	$75,170	—	—	—
C010	City	489	2	$83,909	—	—	—
C011	City	671	11	$54,213	—	—	—
C014	City	546	14	$60,479	—	—	—
C015	City	177	2	$125,556	—	—	—
C016	City	586	55	$39,041	—	—	—
C017	City	427	8	$73,345	—	—	—
C018	City	512	5	$61,498	—	—	—
C019	City	425	2	$81,076	—	—	—
C020	City	136	272	$61,498	—	—	—
C021	City	522	10	$83,909	—	—	—
C022	City	227	160	$95,657	—	—	—
C023	City	370	52	$107,913	—	—	—
C024	City	420	60	$56,103	—	—	—
C025	City	693	3	$59,566	—	—	—
C026	City	426	63	$85,062	—	—	—
C027	City	464	4	$56,103	—	—	—
C028	City	457	2	$83,958	—	—	—
C030	City	802	49	$56,103	—	—	—
C040	City	527	45	$36,598	—	—	—
C041	City	265	152	$48,920	—	—	—
C042	City	488	37	$40,506	—	—	—
C043	City	430	47	$61,498	—	—	—
C047	City	675	62	$69,004	—	—	—
C048	City	422	45	$46,614	—	—	—
C049	City	392	17	$56,103	—	—	—
R019	Rural	728	1	$74,463	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 03103 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

03109 — Manchester city, NH (2.2 mi)
03101 — Manchester city, NH (2.6 mi)
03104 — Manchester city, NH (3.7 mi)
03102 — Manchester city, NH (4.6 mi)
03032 (4.7 mi)
03110 (5 mi)
03053 — Londonderry CDP, NH (6.7 mi)
03045 — Goffstown CDP, NH (7.6 mi)

Areas that include 03103

Manchester, NH ZIP codes — 5 ZIP codes
Hillsborough County ZIP codes — 34 ZIP codes
New Hampshire ZIP code data

Where it ranks

Mail every home in 03103

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) 03103, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 03103 in?: 03103 is a Manchester, NH mailing address. By land area, 97% lies inside Manchester.
What county is 03103 in?: 03103 is in Hillsborough County.
What is the population of 03103?: About 37,775 people (±1,913), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 38,039.
What is the median household income in 03103?: $73,540 (±$5,580), 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 03103?: 31 USPS carrier routes with 15,277 residential and 1,326 business mailboxes (16,600 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 03103?: The closest, measured center to center: 03109 (2.2 mi, Manchester), 03101 (2.6 mi, Manchester), 03104 (3.7 mi, Manchester), 03102 (4.6 mi, Manchester), 03032 (4.7 mi) and 03110 (5 mi).

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