19403 ZIP Code, Norristown, PA

19403 is a ZIP code in Norristown, Pennsylvania in Montgomery County. It covers 22 square miles of land. The closest ZIP codes are 19401, 19490 and 19406. 44,017 people live here in 18,988 households, more than in 9 of every 10 Pennsylvania ZIP codes. At about 1,968 people per square mile it has suburban density, and most homes are owner-occupied (74%). Median household income is $104,071, above the Pennsylvania median of $77,971; the median age is 45.3, older than most ZIP codes.

Quick facts

Key figures

MeasureValue
Residents44,017
Households18,988
Median household income$104,071
Income per person$58,203
Median age45.3
Homeowners73.6%
Median home value$375,100
Median rent$1,709
Bachelor's degree or higher51.0%
Average commute (minutes)27.5
Households with kids under 1822.6%
Moved in the past year10.1%
Below the poverty line4.6%
Broadband internet92.5%
Speak a non-English language at home13.3%

Household income

% of householdsValue
<$10K2.1%
$10–15K2.0%
$15–25K4.6%
$25–35K3.9%
$35–50K6.8%
$50–75K15.1%
$75–100K13.9%
$100–150K20.3%
$150–200K12.6%
$200K+18.7%

Age

% of all residentsValue
<107.9%
10–1910.9%
20–244.1%
25–3413.2%
35–4413.5%
45–5412.2%
55–6416.8%
65–7412.8%
75+8.6%

Tenure

% of housing unitsValue
Owned, with mortgage47.6%
Owned outright24.0%
Rented24.7%
Vacant3.7%

Type of building

% of housing unitsValue
Detached house50.9%
Townhome19.1%
2–4 units6.4%
5–19 units5.6%
20+ units16.4%
Mobile / other1.6%

Businesses in 19403

1,093 business establishments with 23,458 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

19403 has 39 USPS carrier routes with 19,290 residential and 884 business mailboxes. Open the EDDM route map.

Carrier routes in 19403

19403 has 39 USPS carrier routes (34 city (C), 4 rural (R), 1 highway contract (H)) with 19,290 residential and 884 business mailboxes. Routes range from 224 homes (C080) to 1,089 homes (H001); the median route has 482 homes. The Census counted 18,988 households in 19403 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2492
250–49920
500–74915
750–9991
1,000–1,4991
1,500+0

Best routes in 19403 for…

Most businesses

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

  1. Route C039 — USPS business mailboxes 109, 244 homes
  2. Route C045 — USPS business mailboxes 98, 442 homes
  3. Route C074 — USPS business mailboxes 95, 383 homes
  4. Route C057 — USPS business mailboxes 53, 414 homes
  5. Route C078 — USPS business mailboxes 50, 576 homes

Select these 5 routes on the route map

Every carrier route in 19403

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C022City3194$95,743———
C023City4612$154,311———
C024City44929$105,293———
C025City5093$86,432———
C032City56414$140,978———
C036City6031$102,204———
C038City38033$151,043———
C039City244109————
C041City50824$146,309———
C043City5104$52,437———
C044City5376$89,562———
C045City44298$119,189———
C049City4700$80,860———
C053City4142$171,897———
C055City62332$65,884———
C057City41453$91,881———
C058City3830$91,881———
C060City47827$95,743———
C061City56434$151,043———
C063City4923$60,638———
C064City5609$153,295———
C065City3660$171,897———
C066City38336$124,851———
C068City6987$153,295———
C070City4882$124,851———
C074City38395$105,293———
C075City48227$124,851———
C078City57650$105,293———
C079City38435————
C080City22439$151,043———
C082City7001$119,189———
C083City2584$105,293———
C084City7702$63,681———
C085City39621$154,311———
H001Highway contract1,0894$60,638———
R001Rural32513$171,897———
R002Rural5864$155,030———
R003Rural72121$155,030———
R004Rural53736$105,293———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 19403 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 19403

Where it ranks

Mail every home in 19403

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) 19403, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 19403 in?
19403 is a Norristown, PA mailing address. By land area, 18% lies inside Audubon, 10% lies inside Trooper and 6% lies inside Eagleville; the rest is outside any Census-defined city or community.
What county is 19403 in?
19403 is in Montgomery County.
What is the population of 19403?
About 44,017 people (±1,096), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 43,734.
What is the median household income in 19403?
$104,071 (±$7,356), compared with $77,971 for Pennsylvania as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 19403?
39 USPS carrier routes with 19,290 residential and 884 business mailboxes (20,176 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 19403?
The closest, measured center to center: 19401 (2.8 mi, Norristown borough, PA), 19490 (3.6 mi), 19406 (3.7 mi, King of Prussia), 19405 (4.1 mi, Bridgeport borough, PA), 19426 (4.2 mi, Trappe borough, PA) and 19456 (4.3 mi).

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