Allen Township is a township in Northampton County, Pennsylvania, United States. The population of Allen Township was 5,462 at the 2020 census. Allen Township is part of the Lehigh Valley metropolitan area, which had a population of 861,899 and was the 68th-most populous metropolitan area in the U.S. as of the 2020 census.

From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)

How Allen ranks

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#8Most new homes in PA #16Fastest growing in PA #236Highest income in PA All PA rankings →

Town numbers

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Living in Allen

Work & commute in Allen

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Most working residents leave Allen for work: only 2% work in town. The top destinations are Allentown (11%), Bethlehem (8%) and Upper Macungie (5%). Half commute less than 9 miles.

Allentown

11%

Bethlehem

Upper Macungie

South Whitehall

2%Work in townlive and work in Allen 9 miWhere do people commute?the commute map 2,645Jobs based herebalanced

Census LEHD 2023 · ACSWork & commute in Allen →

Health in Allen

Compared with Pennsylvania

1better than PA

of 5 measures CDC estimates. The other 4 are too close to call.

Conditions 1▲ 0 close Habits all close Care all close

BetterToo close to callWorse

What stands out

11.1%Fewer older adults who have lost all their teethPA 14.5% · better

Care nearby

St. Lukes HospitalBethlehem · 8.5 mi · ER

Vida Nueva at Casa GuadalupeAllentown · 7 mi · sliding-scale fees

Primary careNo shortage

DentalNo shortage

Mental healthNo shortage

CDC PLACES 2025 · modeled estimates for adults · ZIP code 18067 · CMS · HRSAHealth in Allen →

Natural hazards in Allen

Moderate

Expected storm and flood damage is higher than in 45% of U.S. communities.

🌊 Inland flooding🌀 Hurricanes🌪️ Tornadoes

4Does Allen flood?paid flood claims since 2004 NoneDisasters that paid out hereof 19 declared for Northampton County MapAllen vs. its neighborsnearby towns shaded by rating

FEMA National Risk Index December 2025 · OpenFEMANatural hazards in Allen →

Climate in Allen

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Allen has chilly, snowy winters and warm summers, with plenty of rain. A typical July afternoon reaches 86°, a January night drops to 20°, and about 33 inches of snow falls in a normal winter.

41° / 22°Winter

62° / 38°Spring

84° / 60°Summer

65° / 43°Fall

How much snow does Allen get?About 33 inches a winter.Rain & snow →When is the first frost?Around Oct 24, with the last in spring around Apr 20.Frost dates →Is it warmer than it used to be?+2.2° vs. the 20th century.Then & now →

NOAA U.S. Climate Normals, 1991–2020Climate in Allen →

Schools in Allen

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A⁻

School Grade A-

The public schools Allen’s kids attend, from kindergarten through graduation, outperform 80% of Pennsylvania’s districts on state tests and graduation. Among towns with similar incomes, they rank near the top.

See how Allen’s schools compare in PA →

DistrictCatasauqua Area SDSchools1

Catasauqua SHS CHigh · Grades 9–12 · 467 students

School data from the U.S. Department of Education (NCES, EDFacts). The School Grade is our own summary of state test results and graduation rates, graded within PA. Ratings are from neighbors.