|Jefferson County, Pennsylvania|
Jefferson County Courthouse
Location in the state of Pennsylvania
Pennsylvania's location in the U.S.
|Founded||October 1, 1830|
|Named for||Thomas Jefferson|
657 sq mi (1,702 km²)
652 sq mi (1,689 km²)
4.4 sq mi (11 km²), 0.7%
68/sq mi (26/km²)
|Time zone||Eastern: UTC-5/-4|
Jefferson County is a county located in the U.S. state of Pennsylvania. As of the 2020 census, the population was 44,492. Its county seat is Brookville. The county was established on March 26, 1804, from part of Lycoming County and later organized in 1830. It is named for President Thomas Jefferson. It is home to Punxsutawney Phil, the most famous groundhog that predicts when spring will come every February 2 (Groundhog Day).
According to the U.S. Census Bureau, the county has a total area of 657 square miles (1,700 km2), of which 652 square miles (1,690 km2) is land and 4.4 square miles (11 km2) (0.7%) is water. It has a warm-summer humid continental climate (Dfb) and average monthly temperatures in Brookville range from 24.8 °F in January to 68.8 °F in July, while in Punxsutawney they range from 25.7 °F in January to 69.6 °F in July. 
- Forest County (northwest)
- Elk County (northeast)
- Clearfield County (east)
- Indiana County (south)
- Armstrong County (southwest)
- Clarion County (west)
- US 119
- US 219
- US 322
- [[Template:Infobox road/PA/link PA|PA 28]]
- [[Template:Infobox road/PA/link PA|PA 36]]
- [[Template:Infobox road/PA/link PA|PA 310]]
- [[Template:Infobox road/PA/link PA|PA 410]]
- [[Template:Infobox road/PA/link PA|PA 536]]
- [[Template:Infobox road/PA/link PA|PA 830]]
- [[Template:Infobox road/PA/link PA|PA 899]]
- [[Template:Infobox road/PA/link PA|PA 949]]
- [[Template:Infobox road/PA/link PA|PA 950]]
There are many named streams flowing through Jefferson County, far too many to list here. An exhaustive list is presented in a separate article. All those streams eventually flow to the Allegheny River except for Bear Run, 1.36 square miles (3.5 km2), in the southeast which flows into the Susquehanna River. The principal streams and the area of their watersheds that lie within the county are:
- Clarion River: 130.50 square miles (338.0 km2)
- Little Toby Creek: 34.46 square miles (89.3 km2)
- Clear Creek: 20.12 square miles (52.1 km2)
- Cathers Run: 15.69 square miles (40.6 km2)
- Mill Creek: 30.70 square miles (79.5 km2)
- Redbank Creek: 375.52 square miles (972.6 km2)
- North Fork Creek: 91.63 square miles (237.3 km2)
- Clear Run: 9.79 square miles (25.4 km2)
- Pekin Run: 10.12 square miles (26.2 km2)
- Sandy Lick Creek: 143.98 square miles (372.9 km2)
- Wolf Run: 18.19 square miles (47.1 km2)
- Soldier Run: 11.09 square miles (28.7 km2)
- Trout Run: 10.74 square miles (27.8 km2)
- Mill Creek: 53.69 square miles (139.1 km2)
- Fivemile Run: 17.55 square miles (45.5 km2)
- Falls Creek: 11.39 square miles (29.5 km2)
- Little Sandy Creek: 70.65 square miles (183.0 km2)
- North Fork Creek: 91.63 square miles (237.3 km2)
- Mahoning Creek: 149.63 square miles (387.5 km2)
- East Branch Mahoning Creek: 15.27 square miles (39.5 km2)
- Stump Creek: 14.86 square miles (38.5 km2)
- Big Run: 19.41 square miles (50.3 km2)
- Canoe Creek: 11.57 square miles (30.0 km2)
- Elk Run: 13.20 square miles (34.2 km2)
- Pine Run: 18.88 square miles (48.9 km2)
As of the census of 2000, there were 45,932 people, 18,375 households, and 12,862 families residing in the county. The population density was 70 people per square mile (27/km2). There were 22,104 housing units at an average density of 34 per square mile (13/km2). The racial makeup of the county was 98.97% White, 0.13% Black or African American, 0.16% Native American, 0.21% Asian, 0.01% Pacific Islander, 0.07% from other races, and 0.45% from two or more races. 0.41% of the population were Hispanic or Latino of any race. 31.1% were of German, 13.4% Italian, 10.8% American, 9.2% Irish and 7.8% English ancestry.
There were 18,375 households, out of which 30.30% had children under the age of 18 living with them, 56.80% were married couples living together, 9.10% had a female householder with no husband present, and 30.00% were non-families. 26.60% of all households were made up of individuals, and 13.80% had someone living alone who was 65 years of age or older. The average household size was 2.45 and the average family size was 2.96.
In the county, the population was spread out, with 23.60% under the age of 18, 7.70% from 18 to 24, 27.20% from 25 to 44, 23.60% from 45 to 64, and 17.90% who were 65 years of age or older. The median age was 40 years. For every 100 females there were 95.70 males. For every 100 females age 18 and over, there were 92.60 males.
Law and government
Jefferson County is a very safe county for the Republican Party, which has won the vote of all but two presidential elections.
As of February 21, 2022, there are 27,832 registered voters in Jefferson County.
- Democratic: 6,500 (23.35%)
- Republican: 18,289 (65.71%)
- Independent: 1,926 (6.92%)
- Third Party: 1,117 (4.01%)
- Herbert L. Bullers Jr.(R)
- Scott E. North(R)
- Jeffrey E. Pisarcik(D)
- Cris Dush, Republican, Pennsylvania's 25th Senatorial District
State House of Representatives
- Brian Smith, Republican, Pennsylvania's 66th Representative District
United States House of Representatives
- G.T. Thompson, Republican, Pennsylvania's 15th congressional district
United States Senate
- Pat Toomey, Republican
- Bob Casey Jr., Democrat
Colleges and universities
- Indiana University of Pennsylvania
- Clarion University of Pennsylvania
- Butler County Community College (Brockway)
Public school districts
- Brockway Area School District
- Brookville Area School District
- Clarion-Limestone Area School District
- DuBois Area School District
- Punxsutawney Area School District
Related public entities
- Jefferson County-DuBois AVTS
- Riverview Intermediate Unit #6
- Allens Mills School - Reynoldsville
- Bear Lane School - Punxsutawney
- Blose Hill Amish School - Reynoldsville
- Bucks Run - Reynoldsville
- Canoe Ridge Amish School - Rossiter
- Christ Dominion Academy
- Colonial Drake - Punxsutawney
- Eagles Nest Amish School - Brockway
- Highland Park - Punxsutawney
- Hillside School - Punxsutawney
- Lone Maple School - Punxsutawney
- Maple Grove School - Reynoldsville
- Mountain View School - Punxsutawney
- Munderf Amish School - Brockway
- Oak Grove Parochial School - Smicksburg
- Pine Valley Parochial School - Punxsutawney
- Playhouse Children's Center - Punxsutawney
- Praise Christian Academy - Reynoldsville
- Punxsutawney Christian Sch - Ele Level - Punxsutawney
- Spring Hollow Amish School - Reynoldsville
- Spring Run School - Smickburg
- Sts Cosmas & Damian School - Punxsutawney
- Trout Run School - Punxsutawney
- Valley View School - Punxsutawney
- West Creek Road Amish School - Punxsutawney
- Willow Drive School - Punxsutawney
- Windy Hollow Amish School - Mayport
- Jefferson County Library System - Brockway
- Mengle Memorial Library - Brockway
- Punxsutawney Memorial Library - Punxsutawney
- Rebecca M Arthurs Memorial Library - Brookville
- Reynoldsville Public Library - Reynoldsville
- Summerville Public Library - Summerville
- Sykesville Public Library - Sykesville
- Full Circle Inc Boys Home - Reynolds
- Jefferson County Adult Detention Center
- Western Pennsylvania School of Taxidermy - Oliveburg
Two Pennsylvania state parks are in the county.
- Clear Creek State Park is in Barnett and Heath Townships.
- Cook Forest State Park is in Barnett Township and stretches into neighboring Clarion and Forest Counties
The Jefferson County Fair is held annually in July.
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 Jefferson County:
- Big Run
- Brookville (county seat)
- Falls Creek (partly in Clearfield County)
- Pine Creek
- Adrian Mines
- Allens Mills
- Bells Mills
- Coal Glen
- East Branch
- Knox Dale
- Lanes Mills
- McMinns Summit
- North Freedom
- Port Barnett
- Sandy Valley
- Schoffner Corner
- Sprankle Mills
- Stump Creek
- Sugar Hill
The population ranking of the following table is based on the 2010 census of Jefferson County.
† county seat
|6||Falls Creek (partially in Clearfield County)||Borough||994|
- John T. Morrison, sixth Governor of Idaho from 1903 until 1905; born in Jefferson County.
- Sparky Lyle, professional baseball player
- Chuck Daly, American basketball head coach
- George Jenks, politician
- Florence Parry Heide, author
- Wilbur Good, professional baseball player
- Andy Hastings, professional football player
- Mal Eason, professional baseball player
- John Mizerock, professional baseball player
- Devin Mesoraco, professional baseball player
- Jim Pittsley, professional baseball player
- Britt Baker, professional wrestler and dentist
- Laura Temple, missionary teacher and archaeologist in Mexico
- National Register of Historic Places listings in Jefferson County, Pennsylvania
- Oil Creek Library District
- ^ "State & County QuickFacts". United States Census Bureau. http://quickfacts.census.gov/qfd/states/42/42065.html.
- ^ "Find a County". National Association of Counties. http://www.naco.org/Counties/Pages/FindACounty.aspx.
- ^ "Pennsylvania: Individual County Chronologies". The Newberry Library. 2008. http://publications.newberry.org/ahcbp/documents/PA_Individual_County_Chronologies.htm.
- ^ Gannett, Henry (1905). The Origin of Certain Place Names in the United States. Govt. Print. Off.. pp. 168. https://archive.org/details/bub_gb_9V1IAAAAMAAJ.
- ^ "2010 Census Gazetteer Files". United States Census Bureau. August 22, 2012. http://www2.census.gov/geo/docs/maps-data/data/gazetteer/counties_list_42.txt.
- ^ "Census 2020". https://www.census.gov/quickfacts/fact/table/jeffersoncountypennsylvania/PST045219.
- ^ "U.S. Census website". United States Census Bureau. https://www.census.gov.
- ^ Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". http://uselectionatlas.org/RESULTS.
- ^ "Voter registration statistics by county". Dos.state.pa.us. https://www.dos.pa.gov/VotingElections/OtherServicesEvents/VotingElectionStatistics/Documents/currentvotestats.xls.
- ^ a b Center, Legislativate Data Processing. "Find Your Legislator" (in en). http://www.legis.state.pa.us/cfdocs/legis/home/findyourlegislator/county_list.cfm?CNTYLIST=Jefferson.
- ^ "Hours and Locations" (in en). http://www.jeffcolibraries.org/hours-and-locations.html.
- ^ "Home". http://menglelibrary.org/.
- ^ "2010 U.S. Census website". United States Census Bureau. https://www.census.gov/programs-surveys/decennial-census/decade.2020.html.
- ^ "Idaho Governor John T. Morrison". National Governors Association. http://www.nga.org/cms/home/governors/past-governors-bios/page_idaho/col2-content/main-content-list/title_morrison_john.html.
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