Pennsylvania State House District 66

State Legislative District Profile (Lower Chamber)

Overview

District ID
pa-hd-066
State
Pennsylvania
Chamber
Lower chamber
District Code
066
Land Area
986.5 sq mi
Water Area
5.53 sq mi

Boundary

Boundary of Pennsylvania State House District 66

Boundary as GeoJSON

Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.

Counties

CountyOverlapShare of district landShare of county land
Jefferson County652.44 sq mi66.1%100.0%
Indiana County334.07 sq mi33.9%40.4%

Showing all 2 counties

Places

PlaceOverlapShare of district landShare of place land
Punxsutawney borough3.37 sq mi0.3%100.0%
Brookville borough3.15 sq mi0.3%100.0%
Rossiter CDP1.89 sq mi0.2%100.0%
Sykesville borough1.58 sq mi0.2%100.0%
Reynoldsville borough1.39 sq mi0.1%100.0%
Brockway borough1.18 sq mi0.1%100.0%
Crenshaw CDP1.10 sq mi0.1%100.0%
Glen Campbell borough0.93 sq mi0.1%100.0%
Timblin borough0.90 sq mi0.1%99.9%
Dixonville CDP0.90 sq mi0.1%100.0%
Falls Creek borough0.89 sq mi0.1%95.4%
Commodore CDP0.83 sq mi0.1%100.0%
Marion Center borough0.74 sq mi0.1%100.0%
Big Run borough0.69 sq mi0.1%100.0%
Summerville borough0.60 sq mi0.1%100.0%
Cherry Tree borough0.51 sq mi0.1%100.0%
Plumville borough0.50 sq mi0.1%99.9%
Corsica borough0.45 sq mi<0.1%100.0%
Ernest borough0.23 sq mi<0.1%99.9%
Worthville borough0.18 sq mi<0.1%100.0%
Smicksburg borough0.15 sq mi<0.1%100.0%

Showing all 21 places

Overlapping Congressional Districts

Congressional districtPopulation in bothShare of this district's populationShare of the congressional district's populationShare of this district's land
PA District 1553,33385.8%7.0%87.1%
PA District 148,84814.2%1.2%12.9%

Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).

Voters

Registered Voters
37,667
Active Voters
36,532 (97.0%)

Party Registration

PartyVotersShare
Democratic7,18919.1%
Republican26,34769.9%
Unaffiliated3,2748.7%
Other parties8402.2%
No party recorded170.0%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–202616,579 (44.0%)0 (0.0%)0 (0.0%)
2023–202431,012 (82.3%)2,272 (6.0%)7,492 (19.9%)
2021–202223,339 (62.0%)0 (0.0%)0 (0.0%)
2019–202026,667 (70.8%)3,113 (8.3%)10,266 (27.3%)
2017–201818,120 (48.1%)0 (0.0%)0 (0.0%)
2015–201620,392 (54.1%)3,364 (8.9%)8,350 (22.2%)
2013–201412,758 (33.9%)0 (0.0%)0 (0.0%)
2011–201216,133 (42.8%)1,736 (4.6%)4,605 (12.2%)

Turnout counts today's registered voters with a counted ballot in the cycle's elections (the odd and even year), as a share of today's registered voters. Voters who have since left the rolls are not counted.

Browse the voter list for this district (premium access; sign-in required)

Source: Civitech voter file snapshot as of 01/05/2026. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Population
61,374 (± 558)
Median Age
42.7
Median Household Income
$59,421 (± $1,769)
High School Graduate or Higher (age 25+)
90.8%
Bachelor's Degree or Higher (age 25+)
17.6%

Population by Age

GroupPeopleShare
Under 1813,73322.4%
18 to 6434,65756.5%
65 and over12,98421.2%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)5440.9%
White, not Hispanic58,93096.0%
Black, not Hispanic1530.2%
Asian, not Hispanic1380.2%
American Indian / Alaska Native, not Hispanic240.0%
Native Hawaiian / Pacific Islander, not Hispanic00.0%
Some other race, not Hispanic1530.2%
Two or more races, not Hispanic1,4322.3%

Source: U.S. Census Bureau, American Community Survey 2020-2024 ACS 5-year estimates (tables B01001, B01002, B01003, B03002, B15003, B19013) for this state legislative district. Estimates are survey-based; ± figures are 90% margins of error.

Citizen Voting Age Population

Total Citizen Population
61,228
Citizen Voting Age Population (CVAP)
47,506

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic60,69999.1%
Hispanic5300.9%
White59,70197.5%
Black1600.3%
Asian460.1%
American Indian / Alaska Native230.0%
Native Hawaiian / Pacific Islander20.0%
Two or More Races380.1%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic47,17399.3%
Hispanic3330.7%
White46,59498.1%
Black2550.5%
Asian620.1%
American Indian / Alaska Native2280.5%
Native Hawaiian / Pacific Islander00.0%
Two or More Races390.1%

Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).