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Dauphin County, Pennsylvania facts for kids

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Dauphin County
Dauphin County Courthouse in Harrisburg
Dauphin County Courthouse in Harrisburg
Flag of Dauphin County
Flag
Official seal of Dauphin County
Seal
Map of Pennsylvania highlighting Dauphin County
Location within the U.S. state of Pennsylvania
Map of the United States highlighting Pennsylvania
Pennsylvania's location within the U.S.
Country  United States
State  Pennsylvania
Founded March 4, 1785
Named for Louis Joseph, Dauphin of France
Seat Harrisburg
Largest township Lower Paxton Township
Area
 • Total 558 sq mi (1,450 km2)
 • Land 525 sq mi (1,360 km2)
 • Water 33 sq mi (90 km2)  5.9%%
Population
 • Estimate 
(2023)
289,234
Time zone UTC−5 (Eastern)
 • Summer (DST) UTC−4 (EDT)
Congressional district 10th
Pennsylvania Historical Marker
Designated: December 9, 1982

Dauphin County (/ˈdɔːfɪn/; Pennsylvania Dutch: Daffin Kaundi) is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 286,401. The county seat is Harrisburg, Pennsylvania's state capital and ninth-most populous city. The county was created on March 4, 1785, from part of Lancaster County and was named after Louis Joseph, Dauphin of France, the first son of King Louis XVI. The county is part of the South Central Pennsylvania region of the state.

Dauphin County is included in the Harrisburg–Carlisle Metropolitan Statistical Area.

Located within the county is Three Mile Island Nuclear Generating Station, site of the 1979 nuclear core meltdown. The nuclear power plant closed in 2019.

Geography

According to the U.S. Census Bureau, the county has a total area of 558 square miles (1,450 km2), of which 525 square miles (1,360 km2) is land and 33 square miles (85 km2) (5.9%) is water. The county is bound to its western border by the Susquehanna River (with the exception of a small peninsula next to Duncannon). The area code is 717 with an overlay of 223.

Adjacent counties

Major roads and highways

  • I-76 / Penna Turnpike
  • I-81
  • I-83
  • I-283
  • US 11 / US 15
  • US 22
  • US 209
  • US 322
  • US 422
  • PA 25
  • PA 39
  • PA 147
  • PA 225
  • PA 230
  • PA 283
  • PA 325
  • PA 341
  • PA 441
  • PA 443
  • PA 743
  • PA 849
  • PA QR 3032.svg SR 3032

Climate

Most of the county by area has a humid continental climate (Dfa except for some Dfb in highlands.) The inclusion of temperature numbers for the past decade shows some lower-lying areas, including Harrisburg, to have a humid subtropical climate (Cfa.) The hardiness zone is 7a except in some higher northern areas where it is 6b and a few very small areas along the river below the city including the airport where it is 7b. [1]

Climate data for Harrisburg, Pennsylvania (Harrisburg Int'l), 1981–2010 normals, extremes 1888–present
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 73
(23)
78
(26)
87
(31)
93
(34)
97
(36)
100
(38)
107
(42)
104
(40)
102
(39)
97
(36)
84
(29)
75
(24)
107
(42)
Mean daily maximum °F (°C) 37.0
(2.8)
40.7
(4.8)
50.4
(10.2)
62.4
(16.9)
72.1
(22.3)
81.0
(27.2)
85.5
(29.7)
83.4
(28.6)
75.6
(24.2)
64.1
(17.8)
53.1
(11.7)
41.3
(5.2)
62.2
(16.8)
Mean daily minimum °F (°C) 22.8
(−5.1)
25.1
(−3.8)
33.0
(0.6)
41.9
(5.5)
52.1
(11.2)
62.0
(16.7)
66.3
(19.1)
64.5
(18.1)
56.2
(13.4)
44.6
(7.0)
35.1
(1.7)
26.6
(−3.0)
44.2
(6.8)
Record low °F (°C) −22
(−30)
−13
(−25)
−1
(−18)
11
(−12)
31
(−1)
40
(4)
49
(9)
45
(7)
30
(−1)
23
(−5)
10
(−12)
−8
(−22)
−22
(−30)
Average precipitation inches (mm) 2.88
(73)
2.39
(61)
3.37
(86)
3.10
(79)
3.79
(96)
3.60
(91)
4.61
(117)
3.20
(81)
4.07
(103)
3.27
(83)
3.23
(82)
3.23
(82)
40.74
(1,035)
Average snowfall inches (cm) 8.8
(22)
10.5
(27)
5.2
(13)
0.4
(1.0)
0
(0)
0
(0)
0
(0)
0
(0)
0
(0)
0
(0)
0.6
(1.5)
5.1
(13)
30.6
(78)
Average precipitation days (≥ 0.01 in) 10.6 9.9 10.9 10.8 12.2 11.1 10.7 9.1 9.2 8.8 9.0 9.7 122.0
Average snowy days (≥ 0.1 in) 5.2 5.0 2.6 0.3 0 0 0 0 0 0 0.9 2.8 16.8
Average relative humidity (%) 64.4 63.2 60.7 59.2 65.2 67.7 68.6 72.2 73.8 70.5 68.2 66.4 66.7
Mean monthly sunshine hours 154.9 167.2 213.8 235.7 266.7 288.5 310.1 285.4 226.7 199.2 139.6 126.0 2,613.8
Percent possible sunshine 52 56 58 59 60 64 68 67 61 58 47 43 59
Source: NOAA (relative humidity and sun 1961–1990 at Capital City Airport)
Climate data for Harrisburg, Pennsylvania (Harrisburg Capital City Airport) 1991-2020 normals (Records 1939-2021)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 73
(23)
83
(28)
86
(30)
93
(34)
97
(36)
100
(38)
107
(42)
101
(38)
102
(39)
97
(36)
84
(29)
75
(24)
107
(42)
Mean daily maximum °F (°C) 40.3
(4.6)
43.2
(6.2)
52.6
(11.4)
64.9
(18.3)
74.7
(23.7)
83.2
(28.4)
87.6
(30.9)
85.4
(29.7)
78.6
(25.9)
66.7
(19.3)
55.1
(12.8)
44.4
(6.9)
64.7
(18.2)
Daily mean °F (°C) 32.6
(0.3)
34.7
(1.5)
43.2
(6.2)
54.1
(12.3)
64.0
(17.8)
73.0
(22.8)
77.5
(25.3)
75.4
(24.1)
68.5
(20.3)
56.7
(13.7)
46.0
(7.8)
37.0
(2.8)
55.2
(12.9)
Mean daily minimum °F (°C) 24.9
(−3.9)
26.2
(−3.2)
33.9
(1.1)
43.3
(6.3)
53.2
(11.8)
62.8
(17.1)
67.4
(19.7)
65.5
(18.6)
58.4
(14.7)
46.7
(8.2)
37.0
(2.8)
29.5
(−1.4)
45.7
(7.6)
Record low °F (°C) −9
(−23)
−5
(−21)
2
(−17)
19
(−7)
31
(−1)
40
(4)
49
(9)
45
(7)
30
(−1)
23
(−5)
13
(−11)
−8
(−22)
−9
(−23)
Average precipitation inches (mm) 2.64
(67)
2.36
(60)
3.35
(85)
3.70
(94)
3.48
(88)
3.72
(94)
4.30
(109)
3.68
(93)
4.12
(105)
3.68
(93)
2.80
(71)
3.15
(80)
40.98
(1,041)
Average precipitation days (≥ 0.01 in) 9 9 10 12 14 12 12 11 10 11 9 10 127
Source: NOAA

Demographics

Historical population
Census Pop.
1790 18,155
1800 22,270 22.7%
1810 31,883 43.2%
1820 21,653 −32.1%
1830 25,243 16.6%
1840 30,118 19.3%
1850 35,754 18.7%
1860 46,756 30.8%
1870 60,740 29.9%
1880 76,148 25.4%
1890 96,977 27.4%
1900 114,443 18.0%
1910 136,152 19.0%
1920 153,116 12.5%
1930 165,231 7.9%
1940 177,410 7.4%
1950 197,784 11.5%
1960 220,255 11.4%
1970 223,834 1.6%
1980 232,317 3.8%
1990 237,813 2.4%
2000 251,805 5.9%
2010 268,100 6.5%
2020 286,401 6.8%
2023 (est.) 289,234 7.9%
U.S. Decennial Census
1790-1960 1900-1990
1990-2000 2010,< 2020

As of the 2010 census, the county was 72.7% White, 18.0% Black or African American, 0.2% Native American, 3.2% Asian, and 3.1% were two or more races. 7.0% of the population were of Hispanic or Latino ancestry.

As of the census of 2000, there were 251,798 people, 102,670 households, and 66,119 families residing in the county. The population density was 479 inhabitants per square mile (185/km2). There were 111,133 housing units at an average density of 212 units per square mile (82/km2). The racial makeup of the county was 77.11% White, 16.91% Black or African American, 0.16% Native American, 1.96% Asian, 0.03% Pacific Islander, 1.97% from other races, and 1.85% from two or more races. 4.13% of the population were Hispanic or Latino of any race. 29.2% were of German, 7.5% Irish, 7.3% American and 7.2% Italian ancestry. 91.8% spoke English and 3.9% Spanish as their first language.

According to 2005 estimates, 73.9% of the county's population was non-Hispanic whites. 17.8% of the population was African-Americans. 2.5% were Asians. Latinos now were 5.0% of the population.

In 2000 there were 102,670 households, out of which 29.70% had children under the age of 18 living with them, 47.60% were married couples living together, 12.90% had a female householder with no husband present, and 35.60% were non-families. 30.00% of all households were made up of individuals, and 10.30% had someone living alone who was 65 years of age or older. The average household size was 2.39 and the average family size was 2.98.

In the county, the population was spread out, with 24.30% under the age of 18, 7.60% from 18 to 24, 30.10% from 25 to 44, 23.80% from 45 to 64, and 14.20% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 92.30 males. For every 100 females age 18 and over, there were 88.80 males.

A study by Echelon Insights found Dauphin County to be the most typical county in America, with its 2016 presidential vote, median income, higher education rate, and religiosity all very close to the national averages.

2020 census

Dauphin County Racial Composition
Race Num. Perc.
White (NH) 175,175 61.16%
Black or African American (NH) 48,404 17%
Native American (NH) 396 0.14%
Asian (NH) 17,183 6%
Pacific Islander (NH) 88 0.03%
Other/Mixed (NH) 13,904 4.85%
Hispanic or Latino 31,251 11%

Amish community

Dauphin County is home to an Amish community that resides in the Lykens Valley in the northern part of the county, consisting of eight church districts. The community was settled by Amish from Lancaster County seeking cheaper land.

Metropolitan Statistical Area

The United States Office of Management and Budget has designated Dauphin County as the Harrisburg-Carlisle, PA Metropolitan Statistical Area (MSA). As of the 2010 U.S. Census the metropolitan area ranked 5th most populous in the State of Pennsylvania and the 96th most populous in the United States with a population of 549,475. Dauphin County is also a part of the larger Harrisburg–York–Lebanon combined statistical area (CSA), which combines the populations of Dauphin County as well as Adams, Cumberland, Lebanon, Perry and York Counties in Pennsylvania. The combined statistical area ranked the 5th most populous in Pennsylvania and 43rd most populous in the nation with a population of 1,219,422.

Education

Map of Dauphin County Pennsylvania School Districts
Map of Dauphin County, Pennsylvania School Districts

Colleges and universities

  • Dixon University Center
  • Harrisburg Area Community College
  • Harrisburg University of Science and Technology
  • Penn State Harrisburg
  • Penn State Hershey Medical Center
  • Temple University Harrisburg Campus
  • Widener University School of Law

Public school districts

School districts include:

  • Central Dauphin School District
  • Derry Township School District
  • Halifax Area School District
  • Harrisburg School District (Pennsylvania)
  • Lower Dauphin School District
  • Middletown Area School District
  • Millersburg School District
  • Steelton-Highspire School District
  • Susquehanna Township School District
  • Susquenita School District (also in Perry County)
  • Upper Dauphin School District
  • Williams Valley School District (also in Schuylkill County)

Public charter schools

Several public charter schools are established in Dauphin County

  • Infinity Charter School
  • Sylvan Heights Science Charter School
  • Capital Area School for the Arts
  • Premier Arts and Science Charter School

Intermediate unit

The Capital Area Intermediate Unit 15 is a state approved education agency that offers: school districts, charter schools, private schools, and home school students, a variety of services including: a completely developed K–12 curriculum that is mapped and aligned with the Pennsylvania Academic Standards (available online), shared services, a group purchasing program and a wide variety of special education and special needs services.

Library system

The Dauphin County Library System provides library service to the residents of the county through a main central library in the state capital and county seat of Harrisburg, Pennsylvania and eight branch libraries. DCLS is a private, non-profit corporation. It is governed by a 17-member Board of Trustees, five appointed annually by the Dauphin County Commissioners, and twelve elected for three-year terms. The Library is a member of the Pennsylvania library system.

Private schools

As reported by the National Center for Educational Statistics

  • Armstrong Valley Christian School – Halifax
  • Berrysburg Christian Academy – Elizabethvile
  • Bishop McDevitt High School – Harrisburg
  • Cathedral Consolidated School – Harrisburg
  • Covenant Christian Academy – Harrisburg
  • East Shore Montessori School – Harrisburg
  • Emmanuel Wesleyan Academy – Gratz
  • Garden Spot Amish School – Millersburg
  • Garden Spot School – Millersburg
  • Goddard School – Harrisburg
  • Hansel and Gretel Early Learning Centers – Harrisburg
  • Harrisburg Adventist School – Harrisburg
  • Harrisburg Christian School – Harrisburg
  • Hillside Amish School – Harrisville
  • Hillside Seventh Day Adventist School – Harrisburg
  • Keystone Math and Science Academy – Harrisburg
  • Kinder-Care Learning Center – Harrisburg
  • KinderCare Learning Center – Hershey
  • Londonderry School – Harrisburg
  • Mahantango School – Lykens
  • Matterstown School – Millersburg
  • Middletown Christian School – Middletown
  • Milton Hershey School – Hershey
  • North Mountain View Amish – Millersburg
  • Northern Dauphin Christian School – Millersburg
  • Pride of the Neighborhood Academies – Harrisburg
  • Rakers Mill School – Elizabethville
  • Rolling Acres School – Lykens
  • Seven Sorrows of BMV School – Middletown
  • Sonshine Learning Station – Middletown
  • South Mountain View School – Spring Glen
  • Specktown School – Lykens
  • St. Catherine Laboure School – Harrisburg
  • St Joan of Arc Elementary School – Hershey
  • St. Margaret Mary School – Harrisburg
  • St. Stephen's Episcopal School – Harrisburg
  • Tender Years Inc. – Hershey
  • The Nativity School of Harrisburg – Harrisburg
  • Windy Knoll School – Spring Glen
  • Wordsworth Academy – Harrisbrug
  • Yeshiva Academy – Harrisburg

Economy

The largest employers in Dauphin County in 2019 were:

  • Commonwealth Government
  • Milton S. Hershey Medical Center
  • The Hershey Company
  • Hershey Entertainment & Resorts Co.
  • UPMC Pinnacle Hospitals
  • Federal Government
  • Pennsylvania State University
  • PHEAA – Pennsylvania Higher Education Assistance Agency
  • United Parcel Service Inc
  • TYCO Electronics Corp.

Recreation

There are two Pennsylvania state parks in Dauphin County.

Communities

Map of Dauphin County Pennsylvania With Municipal and Township Labels
Map of Dauphin County, Pennsylvania with municipal labels showing cities and boroughs (red), townships (white), and census-designated places (blue).

Under Pennsylvania law, there are four types of incorporated municipalities: cities, boroughs, townships, and, in at most two cases, towns. The following cities, boroughs and townships are located in Dauphin County:

City

Boroughs

Townships

  • Conewago
  • Derry
  • East Hanover
  • Halifax
  • Jackson
  • Jefferson
  • Londonderry
  • Lower Paxton
  • Lower Swatara
  • Lykens
  • Middle Paxton
  • Mifflin
  • Reed
  • Rush
  • South Hanover
  • Susquehanna
  • Swatara
  • Upper Paxton
  • Washington
  • Wayne
  • West Hanover
  • Wiconisco
  • Williams

Census-designated places

Census-designated places are geographical areas designated by the U.S. Census Bureau for the purposes of compiling demographic data. They are not actual jurisdictions under Pennsylvania law. Other unincorporated communities, such as villages, may be listed here as well.

Unincorporated communities

Population ranking

The population ranking of the following table is based on the 2010 census of Dauphin County.

county seat

Rank City/Town/etc. Municipal type Population (2010 Census)
1 Harrisburg (State Capital) City 49,528
2 Hershey CDP 14,257
3 Colonial Park CDP 13,229
4 Progress CDP 9,765
5 Middletown Borough 8,901
6 Linglestown CDP 6,334
7 Steelton Borough 5,990
8 Paxtonia CDP 5,412
9 Hummelstown Borough 4,538
10 Rutherford CDP 4,303
11 Skyline View CDP 4,003
12 Lawnton CDP 3,813
13 Penbrook Borough 3,008
14 Millersburg Borough 2,557
15 Highspire Borough 2,399
16 Lykens Borough 1,799
17 Paxtang Borough 1,561
18 Elizabethville Borough 1,510
19 Bressler CDP 1,437
20 Williamstown Borough 1,387
21 Palmdale CDP 1,308
22 Enhaut CDP 1,007
23 Wiconsico CDP 921
24 Royalton Borough 907
25 Halifax Borough 841
26 Dauphin Borough 791
27 Gratz Borough 765
28 Oberlin CDP 588
29 Lenkerville CDP 550
30 Union Deposit CDP 407
31 Berrysburg Borough 368
32 Pillow Borough 298

Notable people

See also

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