Pennsylvania’s 4th Congressional District is represented by Madeleine Dean (D) in the U.S. House of Representatives. The district is one of Pennsylvania’s seats in the 435-member House of Representatives. After the 2020 Census, the average congressional district had 761,169 people, according to the U.S. Census Bureau, and these district boundaries were drawn during the redistricting cycle that followed.
Congressional representatives serve two-year terms and face election every even-numbered year. The next election for this seat will take place on November 3, 2026.
Population
768,425
Median Household Income
$108,583
Population and income: U.S. Census Bureau, American Community Survey 5-year estimates for 2019 to 2023, for district lines in effect on January 1, 2023.
Partisan Lean
D+16
2024 presidential margin (Trump vs Harris). Source: The Downballot.
District boundary, 119th Congress. Boundary data: U.S. Census Bureau TIGERweb. Map tiles: OpenStreetMap.
Madeleine Dean and Pennsylvania's 4th Congressional District
Madeleine Dean, a member of the Democratic Party, represents Pennsylvania's 4th Congressional District and has held the seat since January 3, 2019. The boundary map for the district is above and the ZIP codes it covers are listed further down this page.
Committee assignments: House Committee on Appropriations and House Committee on Foreign Affairs.
The current term ends January 3, 2027. The seat is on the ballot on Tuesday, November 3, 2026. Washington office phone: 202-225-4731. Official site: dean.house.gov.
Current Representative
Rep. Madeleine Dean (D)
119th Congress • Democrat • Representing this district since January 3, 2019
Madeleine Dean currently represents Pennsylvania’s 4th Congressional District as a member of the Democratic Party in the United States House of Representatives. The representative’s district office helps constituents with federal casework, such as Social Security claims and veterans’ benefits.
2026 Election
On the ballot November 3, 2026
- Madeleine Dean, Democratic Incumbent
- Aurora Stuski, Republican
Source: Pennsylvania Department of State, official candidate listing, checked September 26, 2026. Write-in candidates are not listed.
Key dates for November 3, 2026
| Register by mail | Monday, October 19 Application must be received by this date. |
|---|---|
| Register online | Monday, October 19 |
| Register in person | Monday, October 19 |
| Early in-person voting | Pennsylvania has no early voting period. You can request, fill out and return a mail ballot in one visit to your county election office. |
| Request a mail ballot | Tuesday, October 27 Request by 5 p.m. on October 27. |
| Return a mail ballot | Must be received by 8 p.m. on November 3. Postmarks do not count. |
| Election Day | Tuesday, November 3, 2026 |
Check your registration with the Pennsylvania voter lookup. Dates come from the Pennsylvania election office and were checked September 26, 2026. States can change deadlines, so confirm with your election office before you act.
Polling places in Pennsylvania are open 7 a.m. to 8 p.m., local time. Confirm your registration and polling place on the official federal voter page for Pennsylvania: vote.gov.
What is on the ballot nationally on November 3, 2026
Contact Your Representative
Washington Office
150 Cannon House Office Building
Washington, DC 20515
Phone: (202) 225-4731
Online
Committee Assignments
About This District
The district covers parts of Montgomery and Berks counties in Pennsylvania. Its largest cities are Pottstown (about 23,000), Lansdale (about 19,000), Conshohocken (about 9,000), and Hatboro (about 8,000).
Learn more about congressional districts
- What is a congressional district?
- What does a U.S. Representative do?
- What is gerrymandering?
- How congressional redistricting works
Frequently Asked Questions
Who represents Pennsylvania's 4th Congressional District?
Madeleine Dean (D) represents Pennsylvania's 4th Congressional District in the U.S. House of Representatives.
What political party is Madeleine Dean a member of?
Madeleine Dean is a member of the Democratic Party.
How can I contact Madeleine Dean?
You can reach Madeleine Dean by phone at 202-225-4731 or through their official website at https://dean.house.gov.
When does Madeleine Dean's current term end?
Madeleine Dean's current term in the U.S. House of Representatives ends on January 3, 2027.
Where is Pennsylvania's 4th Congressional District?
Pennsylvania's 4th Congressional District is located in the state of Pennsylvania and is one of the 435 voting congressional districts in the U.S. House of Representatives.
What district does Madeleine Dean represent?
Madeleine Dean has represented Pennsylvania's 4th Congressional District since January 3, 2019. The boundary map for the district is on this page.
Where can I see a map of Madeleine Dean's district?
The boundary map for Pennsylvania's 4th Congressional District is on this page. It is drawn from U.S. Census Bureau TIGERweb boundary files for the 119th Congress.
What committees is Madeleine Dean on?
Madeleine Dean sits on House Committee on Appropriations and House Committee on Foreign Affairs. Committee assignments come from the Clerk of the House MemberData file.
Is Madeleine Dean still in Congress?
This site shows Madeleine Dean holding Pennsylvania's 4th Congressional District, checked against the Clerk of the House member list. All 435 House seats are on the ballot on November 3, 2026, so the answer can change with that election.
Nearby Districts in Pennsylvania
ZIP Codes in Pennsylvania's 4th Congressional District
This congressional district contains 100 ZIP codes. The most common 10 are shown below; expand the full list to see every ZIP in the district.
54 of these ZIP codes also extend into another Pennsylvania district, so a ZIP code here does not always identify a single representative. Examples include 18011 (also in the 7th), 18031 (also in the 7th), 18041 (also in the 1st and 7th), 18054 (also in the 1st), 18062 (also in the 7th), 18070 (also in the 1st), 18073 (also in the 1st), 18074 (also in the 1st).
- 18011
- 18031
- 18041
- 18054
- 18056
- 18062
- 18070
- 18073
- 18074
- 18076
View all 100 ZIP codes in this district
- 18011
- 18031
- 18041
- 18054
- 18056
- 18062
- 18070
- 18073
- 18074
- 18076
- 18092
- 18914
- 18964
- 18969
- 19001
- 19002
- 19003
- 19004
- 19006
- 19009
- 19010
- 19012
- 19025
- 19027
- 19031
- 19034
- 19035
- 19038
- 19040
- 19044
- 19046
- 19066
- 19072
- 19075
- 19085
- 19087
- 19090
- 19095
- 19096
- 19118
- 19128
- 19401
- 19403
- 19406
- 19422
- 19426
- 19428
- 19435
- 19436
- 19437
- 19438
- 19440
- 19444
- 19446
- 19453
- 19454
- 19456
- 19460
- 19462
- 19464
- 19468
- 19472
- 19473
- 19474
- 19477
- 19490
- 19492
- 19503
- 19504
- 19505
- 19506
- 19508
- 19510
- 19511
- 19512
- 19518
- 19522
- 19525
- 19526
- 19529
- 19530
- 19533
- 19534
- 19535
- 19536
- 19538
- 19539
- 19545
- 19547
- 19551
- 19555
- 19560
- 19562
- 19564
- 19565
- 19601
- 19604
- 19605
- 19606
- 19608
ZIP-to-district boundaries sourced from the U.S. Census Bureau's 2024-07-30 Block Equivalency File for the 119th Congress. ZCTAs (ZIP Code Tabulation Areas) approximate USPS delivery ZIPs.
U.S. Senators for this state: John Fetterman (D), David McCormick (R)
Last updated September 27, 2026.
Data last checked September 26, 2026.
See how this district compares with another using Compare Districts.