15101 ZIP Code, Allison Park, PA

15101 is a ZIP code in Allison Park, Pennsylvania in Allegheny County. It covers 21 square miles of land. The closest ZIP codes are 15116, 15044 and 15238. 26,036 people live here in 10,654 households, more than in 9 of every 10 Pennsylvania ZIP codes. At about 1,213 people per square mile it has suburban density, and most homes are owner-occupied (79%). Median household income is $114,634, above the Pennsylvania median of $77,971.

Quick facts

Key figures

MeasureValue
Residents26,036
Households10,654
Median household income$114,634
Income per person$61,044
Median age43.7
Homeowners78.9%
Median home value$334,500
Median rent$1,277
Bachelor's degree or higher60.1%
Average commute (minutes)26.9
Households with kids under 1830.2%
Moved in the past year7.3%
Below the poverty line3.7%
Broadband internet95.2%
Speak a non-English language at home6.0%

Household income

% of householdsValue
<$10K2.0%
$10–15K1.5%
$15–25K1.8%
$25–35K4.2%
$35–50K8.1%
$50–75K14.3%
$75–100K10.5%
$100–150K21.2%
$150–200K13.8%
$200K+22.8%

Age

% of all residentsValue
<1011.3%
10–1912.3%
20–243.5%
25–3411.6%
35–4412.9%
45–5410.8%
55–6415.2%
65–7413.3%
75+9.2%

Tenure

% of housing unitsValue
Owned, with mortgage44.7%
Owned outright31.8%
Rented19.5%
Vacant4.1%

Type of building

% of housing unitsValue
Detached house73.7%
Townhome5.6%
2–4 units0.7%
5–19 units12.2%
20+ units7.3%
Mobile / other0.6%

Businesses in 15101

498 business establishments with 5,012 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

15101 has 17 USPS carrier routes with 10,568 residential and 455 business mailboxes. Open the EDDM route map.

Carrier routes in 15101

15101 has 17 USPS carrier routes (13 city (C), 4 rural (R)) with 10,568 residential and 455 business mailboxes. Routes range from 270 homes (R005) to 815 homes (C003); the median route has 668 homes. The Census counted 10,654 households in 15101 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2490
250–4992
500–74913
750–9992
1,000–1,4990
1,500+0

Best routes in 15101 for…

Most businesses

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

  1. Route C002 — USPS business mailboxes 134, 672 homes
  2. Route C006 — USPS business mailboxes 58, 604 homes
  3. Route C004 — USPS business mailboxes 56, 632 homes
  4. Route C014 — USPS business mailboxes 45, 559 homes
  5. Route R002 — USPS business mailboxes 40, 523 homes

Select these 5 routes on the route map

Every carrier route in 15101

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C001City74013$56,410———
C002City672134$108,910———
C003City81511$85,547———
C004City63256$123,959———
C006City60458$88,443———
C008City7302$115,215———
C009City78012$156,612———
C010City5867$164,412———
C011City6831$195,005———
C012City67027$120,886———
C014City55945$85,547———
C015City66825$101,654———
C016City41414$102,246———
R001Rural6686$126,693———
R002Rural52340$123,210———
R004Rural5544$152,304———
R005Rural2700$101,654———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 15101 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 15101

Where it ranks

Mail every home in 15101

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) 15101, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 15101 in?
15101 is a Allison Park, PA mailing address. By land area, 61% lies inside Allison Park; the rest is outside any Census-defined city or community.
What county is 15101 in?
15101 is in Allegheny County.
What is the population of 15101?
About 26,036 people (±1,350), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 24,667.
What is the median household income in 15101?
$114,634 (±$9,667), 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 15101?
17 USPS carrier routes with 10,568 residential and 455 business mailboxes (11,023 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 15101?
The closest, measured center to center: 15116 (3.9 mi, Glenshaw), 15044 (4 mi, Gibsonia), 15238 (4.9 mi, Fox Chapel borough, PA), 15051 (5 mi), 15007 (5.1 mi, Bakerstown) and 15223 (5.3 mi, Etna borough, PA).

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