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Not to be confused with Adams, Armstrong County, Pennsylvania.
Adams County, Pennsylvania
Adams PA Courthouse 1.JPG
Seal of Adams County, Pennsylvania
Map of Pennsylvania highlighting Adams County
Location in the state of Pennsylvania
Map of the United States highlighting Pennsylvania
Pennsylvania's location in the U.S.
Founded January 22, 1800
Named for John Adams
Seat Gettysburg
Largest borough Gettysburg
 • Total 522 sq mi (1,352 km2)
 • Land 519 sq mi (1,344 km2)
 • Water 3.1 sq mi (8 km2), 0.6%
 • (2010) 101,407
 • Density 196/sq mi (76/km²)
Congressional district 4th
Time zone Eastern: UTC-5/-4
Website www.adamscounty.us
Designated November 06, 1982[1]

Adams County is a county in the U.S. state of Pennsylvania. As of the 2010 census, the population was 101,407.[2] Its county seat is Gettysburg.[3] The county was created on January 22, 1800, from part of York County and named in honor of the second President of the United States, John Adams. On 1-3 July 1863, Gettysburg and its vicinity was the site of the pivotal battle of the American Civil War, and as a result is a center for Civil War tourism.

Adams County comprises the Gettysburg, PA Metropolitan Statistical Area, which is also included in the Harrisburg-York-Lebanon, PA Combined Statistical Area.


Eternal Light Peace Memorial at Gettysburg Battlefield

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 southwest 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 ring is typically found at a distance of about 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 represents 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 River and Potomac River.

Adjacent counties[edit]

National protected areas[edit]

Law and government[edit]

Pennsylvania State Senate[edit]

Pennsylvania House of Representatives[edit]

District Representative Party
91 Dan Moul Republican
193 Will Tallman Republican

United States House of Representatives[edit]

District Representative Party
4 Scott Perry Republican

United States Senate[edit]


Historical population
Census Pop.
1800 13,172
1810 15,152 15.0%
1820 19,370 27.8%
1830 21,379 10.4%
1840 23,044 7.8%
1850 25,981 12.7%
1860 28,006 7.8%
1870 30,315 8.2%
1880 32,455 7.1%
1890 33,486 3.2%
1900 34,496 3.0%
1910 34,319 −0.5%
1920 34,583 0.8%
1930 37,128 7.4%
1940 39,435 6.2%
1950 44,197 12.1%
1960 51,906 17.4%
1970 56,937 9.7%
1980 68,292 19.9%
1990 78,274 14.6%
2000 91,292 16.6%
2010 101,407 11.1%
Est. 2014 101,714 [5] 0.3%
U.S. Decennial Census[6]
1790-1960[7] 1900-1990[8]
1990-2000[9] 2010-2013[2]

As of the census[10] of 2010, there were 101,407 people, 33,652 households, and 24,767 families residing in the county. The population density was 194 people per square mile (75/km²). There were 35,831 housing units at an average density of 69 per square mile (27/km²). The racial makeup of the county was 95.39% White, 1.21% Black or African American, 0.20% Native American, 0.49% Asian, 0.02% Pacific Islander, 1.71% from other races, and 0.97% from two or more races. 3.64% of the population were Hispanic or Latino of any race. 42.7% were of German, 14.1% American, 8.5% Irish and 7.1% English ancestry according to Census 2000. 95.0% spoke English and 3.6% Spanish as their first language.

There were 33,652 households out of which 33.70% had children under the age of 18 living with them, 61.10% were married couples living together, 8.50% had a female householder with no husband present, and 26.40% were non-families. 21.30% of all households were made up of individuals and 9.20% had someone living alone who was 65 years of age or older. The average household size was 2.61 and the average family size was 3.02.

In the county, the population was spread out with 24.90% under the age of 18, 9.20% from 18 to 24, 28.90% from 25 to 44, 23.00% from 45 to 64, and 13.90% who were 65 years of age or older. The median age was 37 years. For every 100 females there were 96.30 males. For every 100 females age 18 and over, there were 93.80 males. Adams County is one of two counties in Pennsylvania where Latter-Day Saints make up 1% of the population.

Metropolitan and Combined Statistical Area[edit]

The United States Office of Management and Budget[11] has designated Adams County as the Gettysburg, PA Metropolitan Statistical Area (MSA). As of the 2010 U.S. Census[12] the metropolitan area ranked 19th most populous in the State of Pennsylvania and the 349th most populous in the United States with a population of 101,407. Adams County is also a part of the larger Harrisburg-York-Lebanon, PA Combined Statistical Area (CSA), which combines the populations of Adams County as well as 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.


Map of Adams County, Pennsylvania School Districts

Colleges and universities[edit]

Community, junior and technical colleges[edit]

Public school districts[edit]

The 496 school districts of Pennsylvania, that operate high schools, were ranked for student academic achievement as demonstrated by three years of math, reading, writing and science PSSA results by the.[13][14]

Public charter schools[edit]

County residents may also apply to attend any of the Commonwealth's 14 public, cyber charter schools (in 2015) at no additional cost to the parents.[15]

Private schools[edit]

As reported by Pennsylvania Department of Education April 2015

  • Academy for Media Production - McSherrystown
  • Adams County Christian Academy – Gettysburg
  • Annunciation BVM School – McSherrystown
  • Delone Catholic High School – McSherrystown
  • Forest Lane Mennonite School – Gettysburg
  • Freedom Christian School – Gettysburg
  • Gettysburg SDA Church School – Gettysburg
  • Immaculate Conception BVM School – New Oxford
  • Independent Baptist Day School - Biglerville
  • JIL Christian School – Biglerville
  • Littlestown Christian Academy – Littlestown
  • Oxford Christian Academy - New Oxford
  • Paradise School - Abbottstown
  • Sacred Heart School – Hanover
  • St Francis Xavier School – Gettysburg
  • St James Child Care Center - Gettysburg
  • St Joseph Academy Preschool - McSherrystown

Intermediate Unit[edit]

Lincoln Intermediate Unit (IU#12) region includes: Adams County, Franklin County and York County. 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 individual 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 also provides a GED program to adults who want to earn a high school diploma and 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.[16] There are 29 intermediate units in Pennsylvania. They are funded by school districts, state and federal program specific funding and grants. IUs do not have the power to tax.


  • A R Wentz Library - Gettysburg
  • Adams County Historical Society - Gettysburg
  • Adams County Law Library - Gettysburg
  • East Berlin Community Library [1] - East Berlin
  • Fairfield Area Library - Fairfield
  • Harbaugh-Thomas Library - Biglerville
  • Littlestown Community Library - Littlestown
  • Musselman Library - Gettysburg
  • New Oxford Area Library - New Oxford



There are currently no scheduled commercial flights into Adams County, and travel is limited to general aviation airfields. 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.


U.S. Route 15 enters Adams County, Pennsylvania south of Gettysburg. Business Route 15 (Emmitsburg Road) goes through Gettysburg, while US 15 bypasses the borough. The bypass continues to York Springs. US 15 then leaves Adams County and passes through Dillsburg in York County.

Pennsylvania Highway System[edit]


There is one Pennsylvania state park in Adams County.


Map of Adams County, Pennsylvania with Municipal Labels showing 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 boroughs and townships are located in Adams County:



Census-designated places[edit]

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.

Population ranking[edit]

The population ranking of the following table is based on the 2010 census of Adams County.[12]

county seat

Rank City/Town/etc. Population (2010 Census) Municipal type Incorporated
1 Gettysburg 7,620 Borough 1806
2 Littlestown 4,434 Borough 1864
3 Carroll Valley 3,876 Borough 1974
4 McSherrystown 3,038 Borough 1882
5 Lake Meade 2,563 CDP
6 Midway 2,125 CDP
7 Bonneauville 1,800 Borough 1961
8 New Oxford 1,783 Borough 1874
9 East Berlin 1,521 Borough 1879
10 Lake Heritage 1,333 CDP
11 Biglerville 1,200 Borough 1903
12 Abbottstown 1,011 Borough 1835
13 Arendtsville 952 Borough 1896
14 York Springs 833 Borough 1868
15 Heidlersburg 707 CDP
16 Bendersville 641 Borough 1866
17 Hampton 632 CDP
18 Hunterstown 547 CDP
19 Fairfield 507 Borough 1896
20 Cashtown 459 CDP
21 Aspers 350 CDP
22 McKnightstown 226 CDP
23 Idaville 177 CDP
24 Orrtanna 173 CDP
25 Gardners 150 CDP
26 Table Rock 62 CDP
27 Floradale 38 CDP

Notable people[edit]

See also[edit]


  1. ^ "PHMC Historical Markers Search" (Searchable database). Pennsylvania Historical and Museum Commission. Commonwealth of Pennsylvania. Retrieved 2014-01-25. 
  2. ^ a b "State & County QuickFacts". United States Census Bureau. Retrieved November 16, 2013. 
  3. ^ "Find a County". National Association of Counties. Retrieved June 7, 2011. 
  4. ^ "2010 Census Gazetteer Files". United States Census Bureau. August 22, 2012. Retrieved March 4, 2015. 
  5. ^ "Annual Estimates of the Resident Population for Incorporated Places: April 1, 2010 to July 1, 2014". Retrieved June 4, 2015. 
  6. ^ "U.S. Decennial Census". United States Census Bureau. Retrieved March 4, 2015. 
  7. ^ "Historical Census Browser". University of Virginia Library. Retrieved March 4, 2015. 
  8. ^ Forstall, Richard L., ed. (March 27, 1995). "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved March 4, 2015. 
  9. ^ "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). United States Census Bureau. April 2, 2001. Retrieved March 4, 2015. 
  10. ^ "American FactFinder". United States Census Bureau. Retrieved January 31, 2008. 
  11. ^ http://www.whitehouse.gov/omb
  12. ^ a b http://www.census.gov/2010census/popmap/ipmtext.php?fl=41:42001
  13. ^ Pittsburgh Business Times (April 6, 2012). "Statewide School District Rankings". 
  14. ^ Pittsburgh Business Times (April 10, 2015). "Guide to Pennsylvania Schools Statewide School District Ranking 2015". 
  15. ^ Pennsylvania Department of Education (2015). "Pennsylvania Charter School". 
  16. ^ Lincoln Intermediate Unit 12 website accessed April 2010
  17. ^ a b c Who Was Who in America, Historical Volume, 1607–1896. Chicago: Marquis Who's Who. 1963. 

External links[edit]

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

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Adams_County,_Pennsylvania — Please support Wikipedia.
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... injuries when the police cruiser he was operating impacted a tractor trailer at the intersection of Pennsylvania State Route 94 and United States Route 30 in an area commonly referred to as Cross Keys, Berwick Township, Adams County, Pennsylvania.

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