Union Township (Adams County) is a township in Adams County, Pennsylvania, home to about 3,102 people across 18 square miles. It has no ZIP code of its own: it’s part of 17331 and 17340.
Homes sold for a median of $180 per square foot across 2 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
Population3,102177 per sq mi
Median home value$334,700Census, as estimated by owners
Price per sq ft$180Sold homes, 3 months to August 2026
Mostly Littlestown; part is in Union Township (Adams County)
Each card is that ZIP code’s whole market, including any part outside Union Township (Adams County). Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
The Union Township (Adams County) guide is on the way
We’re writing up Union Township (Adams 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 Union Township (Adams County)
Distances
Nearest major airport
Baltimore/Washington International Thurgood Marshall Airport (BWI)46 miles away
Closer regional airport
Harrisburg International Airport (MDT)33 miles away
Nearest city of 250,000+
Baltimore, MD40 miles away
Nearest city of 1 million+
Philadelphia, PA103 miles away
Straight-line distances from the center of Union Township (Adams County); driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Who represents Union Township (Adams County)
U.S. Representative · Pennsylvania’s 13th DistrictJohn Joyce (R)
U.S. Representative · Pennsylvania’s 11th DistrictLloyd Smucker (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
Union Township (Adams County) had 3,076 residents in the 2020 census, up 3% since 2000.
It’s the 875th largest of 2,568 towns in Pennsylvania by population.
Adams County grew from 34,496 residents in 1900 to 103,852 in 2020.
Adams 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 44.1 inches of rain and melted snow fall in a typical year, with about 28 inches of snow.
Source: NOAA 1991–2020 climate normals, Hanover 4 Sw, PA weather station (about a mile away).
Jobs in Adams County
27,990 jobs at 1,967 businesses in Adams County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Health care
592 doctors and other health care providers list an office in Union Township (Adams County)’s ZIP codes.
Nearest hospitals
Upmc HanoverGeneral hospital · emergency room · CMS rating 4 of 5 · Hanover4.5 miles
Gettysburg HospitalGeneral hospital · emergency room · CMS rating 4 of 5 · Gettysburg10.5 miles
Upmc MemorialGeneral hospital · emergency room · CMS rating 4 of 5 · York18.1 miles
Providers with an office here
Primary care doctors
66
Specialist doctors
102
Dentists
52
Nurse practitioners and physician assistants
135
Mental health providers
133
Physical and occupational therapists
71
Optometrists
16
Chiropractors
17
Pharmacies
22
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 Union Township (Adams County)
Parks (5 nearby)
Plumb Creek Park · 106 acres2.2 mi
Littlestown Community Park · 22 acres2.2 mi
North Street Park · 9 acres2.6 mi
Crouse Park · 2 acres2.3 mi
Grocery stores (1 nearby)
Food Lion2.4 mi
Pharmacies
Choice Family Pharmacy3.3 mi
Laslow's Pharmacy4.3 mi
Libraries (1 nearby)
Littlestown Library2.6 mi
Museums
Neas House4.0 mi
Hanover Fire Museum4.4 mi
Theaters and performance venues
Hanover Theater4.1 mi
Eichelberger Performing Arts Center4.3 mi
Counts are within about 3 miles of the center of town.
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Schools in Union Township (Adams County)
Public schools here are run by Littlestown Area SD, South Western SD, Hanover Public SD and others. Check each district’s attendance zones for a specific address.
Public schools(14)
School
Grades
Students
Type
Distance
Alloway Creek El SchLittlestown
K–5
746
Public
2.3 mi
Baresville El SchHanover
K–5
586
Public
5.2 mi
Clearview El SchHanover
K–4
230
Public
4.4 mi
Conewago Twp El SchHanover
K–3
475
Public
3.6 mi
Hanover Street El SchHanover
K–4
269
Public
4.4 mi
Park Hills El SchHanover
K–5
572
Public
3.8 mi
Washington El SchHanover
K–4
213
Public
5.4 mi
West Manheim El SchHanover
K–5
538
Public
5.1 mi
Hanover MSHanover
5–8
636
Public
5.7 mi
Emory H Markle MSHanover
6–8
1,046
Public
4.9 mi
Maple Avenue MSLittlestown
6–8
413
Public
2.4 mi
Hanover SHSHanover
8–12
578
Public
5.5 mi
Littlestown SHSLittlestown
9–12
532
Public
2.2 mi
South Western SHSHanover
9–12
1,380
Public
5.0 mi
Private schools(2)
School
Grades
Students
Affiliation
Distance
St Joseph Catholic SchoolHanover
Pre-K–8
210
Roman Catholic
3.3 mi
Hoffman AcademyLittlestown
2–12
71
Nonsectarian
7.0 mi
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Penn Township (York County), Hanover Borough, West Manheim, Conewago Township (Adams County), Littlestown, Germany, Mount Joy Township (Adams County), Berwick Township, Heidelberg Township (York County), Oxford Township and Mount Pleasant Township (Adams County).
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.