Derry Township (Mifflin County) is a township in Mifflin County, Pennsylvania, home to about 7,238 people across 31 square miles. Its ZIP code is 17099, and parts of 17009 and 17044 are in Derry Township (Mifflin County) too.
Homes sold for a median of $117 per square foot in the three months ending August 2026, a seller’s market.
Population7,238235 per sq mi
Median home value$156,100Census, as estimated by owners
Price per sq ft$117Sold homes, 3 months to August 2026
Mostly Lewistown; part is in Derry Township (Mifflin County)
Each card is that ZIP code’s whole market, including any part outside Derry Township (Mifflin County). Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
The Derry Township (Mifflin County) guide is on the way
We’re writing up Derry Township (Mifflin County)’s story and what everyday life there is like, for people thinking about moving in.
History
What it’s like to live there
Getting around
Things to do
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Around Derry Township (Mifflin County)
Distances
Nearest major airport
Baltimore/Washington International Thurgood Marshall Airport (BWI)110 miles away
Closer regional airport
State College Regional Airport (SCE)22 miles away
Nearest city of 250,000+
Baltimore, MD103 miles away
Nearest city of 1 million+
Philadelphia, PA135 miles away
Straight-line distances from the center of Derry Township (Mifflin County); driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Who represents Derry Township (Mifflin County)
U.S. Representative · Pennsylvania’s 13th DistrictJohn Joyce (R)
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Population over time
Derry Township (Mifflin County) had 7,212 residents in the 2020 census, down 1% since 2000.
It’s the 394th largest of 2,568 towns in Pennsylvania by population.
Mifflin County grew from 23,160 residents in 1900 to 46,143 in 2020.
Mifflin County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Weather by month
Average highs peak around 85°F in summer, and winter lows average 21°F. About 42.3 inches of rain and melted snow fall in a typical year, with about 26 inches of snow.
Source: NOAA 1991–2020 climate normals, Lewistown, PA weather station (about a mile away).
Jobs in Mifflin County
14,987 jobs at 1,015 businesses in Mifflin County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Health care
11 doctors and other health care providers list an office in Derry Township (Mifflin County).
Nearest hospitals
Geisinger-Lewistown HospitalGeneral hospital · emergency room · CMS rating 5 of 5 · LewistownUnder a mile
Mount Nittany Medical CenterGeneral hospital · emergency room · CMS rating 5 of 5 · State College21.9 miles
Penn Highlands HuntingdonGeneral hospital · emergency room · CMS rating 3 of 5 · Huntingdon24.1 miles
Providers with an office here
Specialist doctors
1
Mental health providers
7
Chiropractors
3
Pharmacies
1
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Places in and around Derry Township (Mifflin County)
Parks (11 nearby)
Kishacoquillas Park · 47 acres1.6 mi
Memorial Park · 31 acres1.0 mi
Rec Park · 29 acres0.6 mi
Mifflin County Practice Fields · 13 acres1.4 mi
Blossom Hill Community Area · 9 acres1.1 mi
Stone Arch Bridge Park · 6 acres1.6 mi
Grocery stores (4 nearby)
Giant0.6 mi
Aldi1.9 mi
Giant2.0 mi
Walmart Supercenter2.4 mi
Pharmacies (1 nearby)
CVS Pharmacy2.1 mi
Libraries (1 nearby)
Mifflin County Library0.3 mi
Museums (1 nearby)
McCoy House0.3 mi
Theaters and performance venues (1 nearby)
Embassy Theater0.4 mi
Counts are within about 3.5 miles of the center of town.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.