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Derry Township, Dauphin County, Pennsylvania

Derry Township is a township in Dauphin County, Pennsylvania. About 24,977 people live there (2020–2024 estimate). It covers 27.1 sq mi (70.3 km²) of land and uses Eastern Time. It has its own local government.

PhiladelphiaPittsburghAllentown
Derry Township in Pennsylvania
South Hanover TownshipNorth Londonderry TownshipSouth Londonderry Township
Derry Township and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Population, 2020–2024 estimate
24,977 ± 47
County
Dauphin County
School district
Derry Township School District
Land area
27.1 sq mi (70.3 km²)
Type
TownshipIts own local government
Time zone
Eastern TimeUTC-05:00 in January; UTC-04:00 in July
Median household income
$97,025 ± $9,346
Median home value
$390,000 ± $25,451
Water area
0.27 sq mi (0.69 km²)
State
Pennsylvania
Census code (GEOID)
4204318936
Coordinates (central point)
40.267797, -76.653060
Check a point in the township finder

These coordinates mark a central point for the area, not a street address. Population, income and home value: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 20, 2026.

Cities, towns and communities in Derry Township, largest first

  1. Hershey (CDP)14,242 people
  2. Palmdale (CDP)1,542 people

These places’ central points lie inside Derry Township. A place can reach across the line, and its government, if it has one, can be separate from the township’s.

Bordering areas, nearest first

  1. Hummelstown (borough)3.2 mi west
  2. South Hanover Township3.4 mi northwest
  3. Conewago Township4.1 mi southeast
  4. Palmyra (borough)4.2 mi northeast
  5. North Londonderry Township, Lebanon County5.6 mi northeast
  6. South Londonderry Township, Lebanon County6.2 mi east
  7. Londonderry Township6.2 mi south
  8. Lower Swatara Township6.5 mi southwest
  9. Swatara Township8.1 mi west
  10. East Hanover Township8.6 mi north

These towns, townships, cities and boroughs share a boundary with Derry Township. Distances are straight lines between central points, not driving distances.

Other townships in Dauphin County, largest first

  1. Lower Paxton Township54,657 people
  2. Swatara Township27,953 people
  3. Susquehanna Township27,245 people
  4. West Hanover Township11,049 people
  5. Lower Swatara Township9,796 people
  6. South Hanover Township7,289 people
  7. East Hanover Township6,029 people
  8. Middle Paxton Township5,088 people
  9. Londonderry Township4,906 people
  10. Upper Paxton Township4,026 people
  11. Halifax Township3,351 people
  12. Conewago Township2,999 people
All 22
  1. Washington Township2,137 people
  2. Jackson Township1,712 people
  3. Lykens Township1,684 people
  4. Wayne Township1,294 people
  5. Williams Township1,178 people
  6. Wiconisco Township1,050 people
  7. Mifflin Township857 people
  8. Jefferson Township484 people
  9. Rush Township290 people
  10. Reed Township195 people

People counts are American Community Survey 2020–2024 5-year estimates. See Dauphin County for its cities, ZIP Code areas and county seat.

Sunrise and sunset in Derry Township

Longest day
15 hours 2 minutes around June 21
Shortest day
9 hours 18 minutes around December 21
Earliest sunrise
5:36 AM around June 14
Latest sunrise
7:41 AM the day before clocks go back in November
Earliest sunset
4:40 PM around December 8
Latest sunset
8:40 PM around June 27

Clocks go forward an hour on the second Sunday in March and back on the first Sunday in November, so sunrise and sunset jump an hour later in March and an hour earlier in November.

Sunrise and sunset on the 15th of each month
DaySunriseSunsetDaylight
Jan 157:27 AM5:04 PM9 h 37 min
Feb 157:00 AM5:41 PM10 h 41 min
Mar 157:18 AM7:13 PM11 h 55 min
Apr 156:28 AM7:45 PM13 h 17 min
May 155:50 AM8:15 PM14 h 25 min
Jun 155:36 AM8:38 PM15 h 2 min
Jul 155:49 AM8:35 PM14 h 46 min
Aug 156:17 AM8:03 PM13 h 46 min
Sep 156:47 AM7:15 PM12 h 28 min
Oct 157:17 AM6:26 PM11 h 9 min
Nov 156:52 AM4:49 PM9 h 57 min
Dec 157:21 AM4:41 PM9 h 20 min

Approximate times for a flat horizon at the central point; the days move by a day or so from year to year. Hills and weather can change what you see.

Before using this answer on a form

A township line is not always the line on your mail: a mailing address can name another town or post office, and school districts, ZIP Codes and tax districts follow their own lines. For taxes, voting or permits, check the full address with Dauphin County or the local office.

Find the township or town where you are now or find your county.

See this area on Census.gov ↗