Adams County
County
Adams County Courthouse in Gettysburg
Seal
Location within the U.S. state of Pennsylvania
Pennsylvania's location within the U.S.
Coordinates: 39°52′N 77°13′W / 39.87°N 77.22°W / 39.87; -77.22
Country	United States
State	Pennsylvania
Founded	January 22, 1800
Named for	John Adams
Seat	Gettysburg
Largest borough	Gettysburg
Area
• Total	522 sq mi (1,350 km2)
• Land	519 sq mi (1,340 km2)
• Water	3.1 sq mi (8 km2)  0.6%
Population  (2020)
• Total	103,852
• Estimate  (2022)	106,027
• Density	200/sq mi (80/km2)
Time zone	UTC−5 (Eastern)
• Summer (DST)	UTC−4 (EDT)
Congressional district	13th
Website	www.adamscountypa.gov
Pennsylvania Historical Marker
Type	City
Designated	November 6, 1982[1]

Adams County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 103,852.^[2] Its county seat is Gettysburg.^[3] The county was created on January 22, 1800, from part of York County, and was named for the second President of the United States, John Adams. On July 1–3, 1863, a crucial battle of the American Civil War was fought near Gettysburg; Adams County, as a result, is a center for Civil War-related tourism. The county is part of the South Central Pennsylvania region of the state.^[a] Adams County comprises the Gettysburg metropolitan statistical area, which is also included in the Harrisburg–York–Lebanon combined statistical area.

According to the U.S. Census Bureau, the county has a total area of 522 square miles (1,350 km²), of which 519 square miles (1,340 km²) is land and 3.1 square miles (8.0 km²) (0.6%) is water.^[4] The Borough of Gettysburg is located at the center of Adams County. This county seat community is surrounded on three sides by the Gettysburg National Military Park (GNMP). The Eisenhower National Historic Site adjoins GNMP on its southwestern edge. Most of Adams County's rural landscapes and its mid-19th century roadway pattern remain intact today. Thirteen historic roadways converge at or near Gettysburg Borough. Two circular rings of towns surround Gettysburg; the first is typically found at a distance of approximately 7 miles (11 km) from Gettysburg. The second ring is found at a distance of 12 to 15 miles (24 km) from the county seat. This "spokes and wheel" pattern is one of the few examples of Central Place Theory in the Eastern United States.

The county is in the watershed of the Chesapeake Bay and is drained by the Susquehanna and Potomac Rivers.

• Cumberland County (north)
• York County (east)
• Carroll County, Maryland (southeast)
• Frederick County, Maryland (southwest)
• Franklin County (west)

• Eisenhower National Historic Site
• Gettysburg National Military Park

Adams has a hot-summer humid continental climate (Dfa).

Recreational areas of Adams County include

• Caledonia State Park, state park named for an iron furnace that was owned by Thaddeus Stevens. Most of this park is in neighboring Franklin County, but a portion of it extends into Adams. It is near U.S. Route 30 between Chambersburg and Gettysburg.
• Eisenhower National Historic Site, the home and farm of 34th President of the United States Dwight D. Eisenhower.
• Gettysburg Battlefield, Civil War battlefield fought July 1–3, 1863
• Journey Through Hallowed Ground National Heritage Area, federally designated National Heritage Area in Maryland, Pennsylvania, Virginia, and West Virginia.
• McPherson Ridge, landform used during the Battle of Gettysburg
• Michaux State Forest
• Pennsylvania State Game Lands Number 249, providing hunting, trapping and other activities.
• Strawberry Hill Nature Preserve

Adams County is administered by a three-person board of commissioners, who serve four-year terms. Elections occur in the odd-numbered years that precede U.S. presidential elections, with the most recent election falling in 2023. All three commissioners are chosen in the same election, and voters may vote for no more than two of the candidates. The commissioners are responsible for the management of the fiscal and administrative functions of the county.

As of the May 2024^[6]

Presidential politics

Adams is a consistently Republican county, like most of South Central Pennsylvania. In 2020, Donald Trump carried the county with 66.3% of the vote to Joe Biden's 32.2%. In 2016, Democratic nominee Hillary Clinton only received 29.6% of the vote, the lowest share any Democrat had received in the county since George McGovern 44 years prior.^[7] No Democratic presidential candidate has won Adams County since Lyndon Johnson's 1964 landslide.^[8] However, Democratic strength exists in Gettysburg, which Biden carried 63%-35%.^[9]

Adams County consists of two Pennsylvania House Districts. The 91st district is exclusively in Adams County, comprising the southern and middle parts of the county, including Gettysburg. The 193rd District spans into Cumberland County to the north.

Adams County is entirely contained within the 33rd Senatorial District, which also includes parts of York and Franklin counties.

From 2012 until 2018, Adams County was part of the 4th Congressional District until the Pennsylvania Supreme Court ruled that the Commonwealth's Congressional Districts constituted an illegal partisan Gerrymander.^[11] As a result, Adams County was moved from the 4th District to the 13th Congressional District and elected a new representative in the 2018 election.

• John Fetterman, Democratic
• Bob Casey Jr., Democratic

As of July 17, 2023, there were 70,831 registered voters in the county. Republicans hold a majority of the voters. There were 40,766 registered Republicans, 18,835 registered Democrats, 8,201 voters without any partisan affiliation, and 3,029 voters registered to other parties. "Other parties" also includes voters who left their preferred party blank; only those who chose "no affiliation" are included under "no partisan affiliation".^[12]

As of the 2022, ^[19] there were 106,027 people and 40,676 households in the county. The population density was 204.4 people per square mile. There were 43,653 housing units with 76% of the units owner occupied.

90.7% of the population 25 years and over were high school graduates, and 24.3% had a bachelor's degree or higher. Per capita income was $36,150, and the median household income was $76,727. 8.4% of the population lived below the poverty line.

The racial makeup of the county was 87% White, 1% Black or African American, 0.0% Native American, 1% Asian, 0.0% Pacific Islander, 3% from other races, and 7% of the population were Hispanic or Latino of any race. 7.8% of the population were military veterans. 19% of the population was under 18, 59% between 18-64, and 22% 65 or over.

There were 40,676 households, of which 68% were married couples living together, 10% had a female householder with no husband present, 4% had a male householder with no wife present, and 17% were non-families. The average household size was 2.5. The median value of owner-occupied housing units was $255,900.

The US OMB^[21] has designated Adams County as the Gettysburg, PA metropolitan statistical area (MSA). As of the 2010 census^[22] the metropolitan area population of 101,407 ranked 19th most populous in the State of Pennsylvania and the 349th most populous in the United States. Adams County is also a part of the larger Harrisburg–York–Lebanon combined statistical area (CSA), which combines the populations of Adams County with those of Cumberland, Dauphin, Lebanon, Perry and York counties in Pennsylvania. The combined statistical area ranked 5th in the State of Pennsylvania and 43rd most populous in the United States, with a population of 1,219,422.

• Gettysburg College
• Lutheran Theological Seminary

• Harrisburg Area Community College

School districts include:^[23]

• Bermudian Springs School District
• Conewago Valley School District
• Fairfield Area School District
• Gettysburg Area School District
• Littlestown Area School District
• Upper Adams School District

• Gettysburg Montessori Charter School – Gettysburg (K-6)
• Vida Charter School – Gettysburg (K-6)

County residents may apply to attend any of the Commonwealth's 14 (as of 2015) public, cyber charter schools at no additional cost to the parents.^[24]

Lincoln Intermediate Unit (IU#12) region includes Adams, Franklin, and York counties. The agency offers school districts, home schooled students and private schools many services including: Special education services, combined purchasing, and instructional technology services. It runs Summer Academy, which offers both art and academic strands designed to meet the needs of gifted, talented and high achieving students. Additional services include: Curriculum Mapping, Professional Development for school employees, Adult Education, Nonpublic School Services, Business Services, Migrant & ESL (English as a Second Language), Instructional Services, Special Education, Management Services, and Technology Services. It provides a GED program for adults to earn a high school diploma, and offers literacy programs. The Lincoln Intermediate Unit is governed by a 13-member board of directors, each a member of a local school board from the 25 school districts. Board members are elected by school directors of all 25 school districts for three-year terms that begin July 1.^[25] There are 29 intermediate units in Pennsylvania. They are funded by school districts, state and federal program specific funding and grants; they do not have the power to tax.

There are currently no scheduled commercial flights into Adams County. The nearest airports with regular commercial service are in Hagerstown, Maryland (Hagerstown Regional Airport), Harrisburg, Pennsylvania (Harrisburg International Airport), and Lancaster, Pennsylvania (Lancaster Airport).

Public bus service in Adams County is available through the Adams County Transit Authority.

Under Pennsylvania law, there are four types of incorporated municipalities: cities, boroughs, townships, and, in at most two cases, towns. The following boroughs and townships are located in Adams County, as well as unincorporated areas and CDPs:

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

The population ranking of the following table is based on the 2010 census of Adams County.^[22]

† county seat

• Joel Funk Asper, former U.S. Congressman^[29]
• Gabor Boritt, historian of Abraham Lincoln and the American Civil War, professor at Gettysburg College
• Jake Boritt, documentary producer
• Henry R. Brinkerhoff, former U.S. Congressman^[29]
• David A. Day, former Lutheran missionary to Liberia
• Dwight D. Eisenhower and Mamie Eisenhower, their retirement home outside Gettysburg is preserved as Eisenhower National Historic Site
• Erik Harris, professional football player, Atlanta Falcons
• John A. Hauser, former president of C. H. Musselman Company
• Eddie Plank, former Major League Baseball pitcher; third winningest left-handed pitcher of all time and 1946 Baseball Hall of Fame inductee
• John Studebaker, co-founder of company that became the Studebaker Corporation

• Adams County Courthouse (Pennsylvania)
• National Register of Historic Places listings in Adams County, Pennsylvania
• List of counties in Pennsylvania

• Official website
• Adams County Community Foundation
• Adams County Visitor Information

39°52′N 77°13′W / 39.87°N 77.22°W / 39.87; -77.22