17055 ZIP Code, Mechanicsburg, PA

17055 is a ZIP code in Mechanicsburg, Pennsylvania — mostly in Cumberland County (88% of its land), with smaller parts in York County. It covers 39 square miles of land. The closest ZIP codes are 17027, 17050 and 17011. 42,006 people live here in 18,318 households, more than in 9 of every 10 Pennsylvania ZIP codes. At about 1,071 people per square mile it has suburban density, and most homes are owner-occupied (71%). Median household income is $99,077, above the Pennsylvania median of $77,971.

Quick facts

Key figures

MeasureValue
Residents42,006
Households18,318
Median household income$99,077
Income per person$55,150
Median age41.4
Homeowners70.8%
Median home value$284,500
Median rent$1,446
Bachelor's degree or higher48.3%
Average commute (minutes)22
Households with kids under 1824.5%
Moved in the past year11.0%
Below the poverty line4.8%
Broadband internet93.4%
Speak a non-English language at home5.4%

Household income

% of householdsValue
<$10K2.5%
$10–15K0.5%
$15–25K5.0%
$25–35K4.2%
$35–50K10.7%
$50–75K15.1%
$75–100K12.4%
$100–150K22.1%
$150–200K13.3%
$200K+14.1%

Age

% of all residentsValue
<1010.7%
10–1910.9%
20–243.8%
25–3415.4%
35–4413.3%
45–5410.0%
55–6413.3%
65–7411.5%
75+11.3%

Tenure

% of housing unitsValue
Owned, with mortgage44.1%
Owned outright25.2%
Rented27.6%
Vacant3.0%

Type of building

% of housing unitsValue
Detached house57.4%
Townhome18.2%
2–4 units7.1%
5–19 units7.0%
20+ units9.1%
Mobile / other1.2%

Businesses in 17055

1,041 business establishments with 19,859 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

17055 has 31 USPS carrier routes with 19,358 residential and 957 business mailboxes. Open the EDDM route map.

Carrier routes in 17055

17055 has 31 USPS carrier routes (12 city (C), 19 rural (R)) with 19,358 residential and 957 business mailboxes. Routes range from 386 homes (R028) to 1,097 homes (C014); the median route has 609 homes. The Census counted 18,318 households in 17055 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2490
250–4994
500–74922
750–9994
1,000–1,4991
1,500+0

Best routes in 17055 for…

Most businesses

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

  1. Route R028 — USPS business mailboxes 202, 386 homes
  2. Route C016 — USPS business mailboxes 126, 825 homes
  3. Route C010 — USPS business mailboxes 101, 674 homes
  4. Route C008 — USPS business mailboxes 77, 442 homes
  5. Route R038 — USPS business mailboxes 72, 812 homes

Select these 5 routes on the route map

Every carrier route in 17055

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C001City75239$200,001+———
C003City51931$70,068———
C004City57610$68,427———
C007City56333$64,350———
C008City44277$89,955———
C010City674101$89,955———
C011City6091$100,294———
C014City1,0974$100,294———
C016City825126$68,427———
C017City5501$100,294———
C021City4977$89,955———
C024City4724$68,427———
R002Rural52919$104,946———
R003Rural54910$115,593———
R006Rural6191$103,074———
R007Rural6340$112,826———
R009Rural65821$119,697———
R010Rural52219$200,001+———
R012Rural73325$50,359———
R013Rural6329$119,697———
R016Rural7462$135,385———
R017Rural5277$200,001+———
R024Rural8118$112,826———
R026Rural5844$119,697———
R028Rural386202$71,671———
R030Rural66447$200,001+———
R031Rural64265$50,359———
R034Rural5081$135,078———
R035Rural6089$103,074———
R038Rural81272$116,751———
R039Rural6182$135,078———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 17055 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 17055

Where it ranks

Mail every home in 17055

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) 17055, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 17055 in?
17055 is a Mechanicsburg, PA mailing address. By land area, 6% lies inside Mechanicsburg; the rest is outside any Census-defined city or community.
What county is 17055 in?
17055 is mostly in Cumberland County (88% of its land), with smaller parts in York County.
What is the population of 17055?
About 42,006 people (±990), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 40,353.
What is the median household income in 17055?
$99,077 (±$8,149), 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 17055?
31 USPS carrier routes with 19,358 residential and 957 business mailboxes (20,315 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 17055?
The closest, measured center to center: 17027 (1.6 mi, Messiah College), 17050 (5.1 mi, New Kingstown), 17011 (5.4 mi, Camp Hill borough, PA), 17019 (5.9 mi, Dillsburg borough, PA), 17007 (6.9 mi, Boiling Springs) and 17043 (7.1 mi, Lemoyne borough, PA).

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