Dauphin County, Pennsylvania

Dauphin County: County in Pennsylvania, United States


Dauphin County is a county located in the U.S. state of Pennsylvania. As of the 2010 census, the population was 268,100 and a population density of 186 people per km². After 10 years in 2020 county had an estimated population of 279,874 inhabitants. Its county seat is Harrisburg. The county was created 238 years ago in 1785.

Quick Facts about Dauphin County

Population : 279,874 (2020)
Country : United States of America
State : Pennsylvania (United States)
Twitter username : dauphincounty
Area : 1444 km2
Water as percent of area : 5.9%
Land as percent of area : 94.1%
Named for : Louis Joseph, Dauphin of France
Altitude : 699 feet / 213 meters
Capital : Harrisburg
Establishment : March 03, 1785
Time Zone : America/New_York
Local time : 10:17:37 (5th June 2023)
Density : 194 Pop. per km² as of 2020
Population growth : 4.21% (2010-2020)
Dauphin County locator map
Location of Dauphin County on Pennsylvania map.
Dauphin County Courthouse image
Dauphin County Courthouse
Dauphin County Courthouse image


Dauphin County is located at 40°24'56"N 76°46'46"W (40.4154400, -76.7794700). It has 6 neighbors: Cumberland County, Juniata County, Lancaster County, Lebanon County, Northumberland County and Schuylkill County.

Dauphin County map

The largest city of Dauphin County is Harrisburg with a population of 49,322. Other cities include, Steelton population 5,957, Hummelstown population 4,814, Penbrook population 2,976 and Millersburg population 2,514. See all Dauphin County cities & populated places.

Dauphin County Populated Places (more)

Cities, Towns, Neighborhoods & Other Populated Places in Dauphin County.

City Name Population Title
Harrisburg 49,322 City in and county seat of Dauphin County, Pennsylvania, United States and Pennsylvania federated state capital city
Hershey 14,257 Census designated place
Colonial Park 13,229 Census designated place
Progress 9,765 Census designated place
Linglestown 6,334 Census designated place
Steelton 5,957 Borough in southern Dauphin County, Pennsylvania
Paxtonia 5,412 Census designated place
Swatara 4,830 Township in southern Dauphin County, Pennsylvania
Hummelstown 4,814 Borough in southern Dauphin County, Pennsylvania
Skyline View 4,003 Census designated place
Lawnton 3,813 Census designated place
Penbrook 2,976 Borough in western Dauphin County, Pennsylvania
Millersburg 2,514 Borough in northwestern Dauphin County, Pennsylvania
Highspire 2,369 Borough in southwestern Dauphin County, Pennsylvania
Matamoras 2,364 City in Washington County, Ohio, United States of America
Lykens 1,771 Borough in northeastern Dauphin County, Pennsylvania

Dauphin County has 6 neighbours.


The population of Dauphin County increased by 4.21% in 10 years.

Year Population % Change Method
2010 268,100 - census
2011 269,249 0.43% estimation process
2012 270,005 0.28% estimation process
2013 271,431 0.53% estimation process
2014 272,223 0.29% estimation process
2015 273,085 0.32% estimation process
2016 274,196 0.41% estimation process
2017 275,714 0.55% estimation process
2018 276,864 0.42% estimation process
2019 278,299 0.52% estimation process
2020 279,874 0.56% estimation process

Comitatul Dauphin, Comte de Dauphin, Comte du Dauphin, Comté de Dauphin, Comté du Dauphin, Condado de Dauphin, Condado han Dauphin, Contae Dauphin, Contea di Dauphin, Dauphin, Dauphin Comitatus, Dauphin County, Dauphin Kun, Dauphin Kūn, Dauphin konderria, Dauphin megye, Dauphini maakond, Dofin, Dofin srjan, Hrabstwo Dauphin, Konteth Dauphin, Okrug Dofin, Paxtang Township, Quan Dauphin, Quận Dauphin, dao fen xian, dauphina ka'unti, dofin jun, Дофин, Дофін, Округ Дофин, Դոֆին շրջան, مقاطعة دوفين, ڈاؤفن کاؤنٹی, ڈافین کاؤنٹی، پنسلوانیا, ডৌফিন কাউন্টি, ドーフィン郡, 道芬縣

People born in Dauphin County (9)

People born in Dauphin County, including Confederate Army general Josiah Gorgas, Union Army officer George F. McFarland, baseball player and coach George Staller, .


Pennsylvania Other Counties (more counties)

County Name Population Title
Philadelphia County 1,578,487 County in Pennsylvania, United States
Philadelphia 1,578,487 Largest city in Pennsylvania, United States
Allegheny County 1,211,358 County in the southwestern part of the U.
Montgomery County 833,869 County in Pennsylvania, United States
Bucks County 627,987 County in Pennsylvania, United States
Delaware County 566,753 County in Pennsylvania, United States
Lancaster County 546,192 County in Pennsylvania, United States
Chester County 526,759 County in Pennsylvania, United States
York County 450,448 County in Maine, United States
Berks County 421,017 County in Pennsylvania, United States
Croydon 385,346 London borough in South London
Lehigh County 370,802 County in Pennsylvania, United States of America
Westmoreland County 347,087 County in Pennsylvania, United States
Luzerne County 316,982 County in Pennsylvania, United States
Northampton County 305,892 County in Pennsylvania, United States
Pittsburgh 299,226 County seat in Allegheny County, Pennsylvania, United States