Overview
- District ID
- pa-sd-004
- State
- Pennsylvania
- Chamber
- Upper chamber (state senate)
- District Code
- 004
- Land Area
- 45 sq mi
- Water Area
- 0.06 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 2 counties
Places
Showing all 14 places
Overlapping Congressional Districts
| Congressional district | Population in both | Share of this district's population | Share of the congressional district's population | Share of this district's land |
|---|
| PA District 3 | 143,324 | 53.6% | 18.7% | 28.4% |
| PA District 4 | 124,125 | 46.4% | 16.2% | 71.6% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 198,360
- Active Voters
- 185,238 (93.4%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 147,027 | 74.1% |
| Republican | 25,541 | 12.9% |
| Unaffiliated | 21,972 | 11.1% |
| Other parties | 3,702 | 1.9% |
| No party recorded | 118 | 0.1% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 96,447 (48.6%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 153,016 (77.1%) | 46,431 (23.4%) | 5,454 (2.7%) |
| 2021–2022 | 115,798 (58.4%) | 0 (0.0%) | 0 (0.0%) |
| 2019–2020 | 136,593 (68.9%) | 66,979 (33.8%) | 6,452 (3.3%) |
| 2017–2018 | 106,937 (53.9%) | 0 (0.0%) | 0 (0.0%) |
| 2015–2016 | 112,402 (56.7%) | 58,979 (29.7%) | 9,876 (5.0%) |
| 2013–2014 | 72,082 (36.3%) | 0 (0.0%) | 0 (0.0%) |
| 2011–2012 | 96,227 (48.5%) | 26,884 (13.6%) | 4,390 (2.2%) |
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
- 276,093 (± 4,166)
- Median Age
- 40.8
- Median Household Income
- $77,101 (± $3,274)
- High School Graduate or Higher (age 25+)
- 93.2%
- Bachelor's Degree or Higher (age 25+)
- 44.5%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 58,710 | 21.3% |
| 18 to 64 | 162,403 | 58.8% |
| 65 and over | 54,980 | 19.9% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 14,452 | 5.2% |
| White, not Hispanic | 104,900 | 38.0% |
| Black, not Hispanic | 134,536 | 48.7% |
| Asian, not Hispanic | 8,465 | 3.1% |
| American Indian / Alaska Native, not Hispanic | 223 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 12 | 0.0% |
| Some other race, not Hispanic | 1,658 | 0.6% |
| Two or more races, not Hispanic | 11,847 | 4.3% |
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
- 267,552
- Citizen Voting Age Population (CVAP)
- 209,721
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 254,194 | 95.0% |
| Hispanic | 13,360 | 5.0% |
| White | 106,228 | 39.7% |
| Black | 132,003 | 49.3% |
| Asian | 6,032 | 2.3% |
| American Indian / Alaska Native | 235 | 0.1% |
| Native Hawaiian / Pacific Islander | 15 | 0.0% |
| Two or More Races | 1,566 | 0.6% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 200,999 | 95.8% |
| Hispanic | 8,723 | 4.2% |
| White | 87,667 | 41.8% |
| Black | 106,001 | 50.5% |
| Asian | 5,683 | 2.7% |
| American Indian / Alaska Native | 1,561 | 0.7% |
| Native Hawaiian / Pacific Islander | 9 | 0.0% |
| Two or More Races | 1,049 | 0.5% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
