Wisconsin’s 4th Congressional District is represented by Gwen Moore (D) in the U.S. House of Representatives. The district is one of Wisconsin’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
727,084
Median Household Income
$57,999
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+51
2024 presidential margin (Trump vs Harris). Source: The Downballot.
District boundary, 119th Congress. Boundary data: U.S. Census Bureau TIGERweb. Map tiles: OpenStreetMap.
Gwen Moore and Wisconsin's 4th Congressional District
Gwen Moore, a member of the Democratic Party, represents Wisconsin's 4th Congressional District and has held the seat since January 4, 2005. 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 Ways and Means and Joint Economic Committee.
The current term ends January 3, 2027. The seat is on the ballot on Tuesday, November 3, 2026. Washington office phone: 202-225-4572. Official site: gwenmoore.house.gov.
Current Representative
Rep. Gwen Moore (D)
119th Congress • Democrat • Representing this district since January 4, 2005
Gwen Moore currently represents Wisconsin’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
- Tim Rogers, Republican
- Gwen Moore, Democratic Incumbent
- Arthur Burks, Independent
Source: Wisconsin Elections Commission, candidates on ballot, checked September 26, 2026. Write-in candidates are not listed.
Key dates for November 3, 2026
| Register by mail | Wednesday, October 14 Application must be postmarked by this date. |
|---|---|
| Register online | Wednesday, October 14 |
| Register in person | Friday, October 30 |
| Same-day registration | Register at your municipal clerk's office until 5 p.m. on October 30, or at your polling place on Election Day, with proof of residence. |
| Early in-person voting | October 20 to November 1 This is in-person absentee voting at your clerk's office. Dates and hours vary by municipality. |
| Request a mail ballot | Thursday, October 29 Request must be received by 5 p.m. on October 29. Photo ID is required. |
| 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 Wisconsin voter lookup. Dates come from the Wisconsin election office and were checked September 26, 2026. States can change deadlines, so confirm with your election office before you act.
Polling places in Wisconsin are open 7 a.m. to 8 p.m., local time. Confirm your registration and polling place on the official federal voter page for Wisconsin: vote.gov.
What is on the ballot nationally on November 3, 2026
Contact Your Representative
Washington Office
2252 Rayburn House Office Building
Washington, DC 20515
Phone: (202) 225-4572
Online
Committee Assignments
About This District
The district lies within Milwaukee County in Wisconsin. Its largest cities are Milwaukee (about 577,000), Wauwatosa (about 48,000), Whitefish Bay (about 15,000), and Shorewood (about 14,000).
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 Wisconsin's 4th Congressional District?
Gwen Moore (D) represents Wisconsin's 4th Congressional District in the U.S. House of Representatives.
What political party is Gwen Moore a member of?
Gwen Moore is a member of the Democratic Party.
How can I contact Gwen Moore?
You can reach Gwen Moore by phone at 202-225-4572 or through their official website at https://gwenmoore.house.gov.
When does Gwen Moore's current term end?
Gwen Moore's current term in the U.S. House of Representatives ends on January 3, 2027.
Where is Wisconsin's 4th Congressional District?
Wisconsin's 4th Congressional District is located in the state of Wisconsin and is one of the 435 voting congressional districts in the U.S. House of Representatives.
What district does Gwen Moore represent?
Gwen Moore has represented Wisconsin's 4th Congressional District since January 4, 2005. The boundary map for the district is on this page.
Where can I see a map of Gwen Moore's district?
The boundary map for Wisconsin'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 Gwen Moore on?
Gwen Moore sits on House Committee on Ways and Means and Joint Economic Committee. Committee assignments come from the Clerk of the House MemberData file.
Is Gwen Moore still in Congress?
This site shows Gwen Moore holding Wisconsin'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 Wisconsin
ZIP Codes in Wisconsin's 4th Congressional District
This congressional district contains 31 ZIP codes. The most common 10 are shown below; expand the full list to see every ZIP in the district.
12 of these ZIP codes also extend into another Wisconsin district, so a ZIP code here does not always identify a single representative. Examples include 53154 (also in the 1st), 53207 (also in the 1st), 53214 (also in the 5th), 53217 (also in the 6th), 53219 (also in the 5th), 53220 (also in the 1st and 5th), 53221 (also in the 1st and 5th), 53225 (also in the 5th).
- 53154
- 53202
- 53203
- 53204
- 53205
- 53206
- 53207
- 53208
- 53209
- 53210
View all 31 ZIP codes in this district
- 53154
- 53202
- 53203
- 53204
- 53205
- 53206
- 53207
- 53208
- 53209
- 53210
- 53211
- 53212
- 53213
- 53214
- 53215
- 53216
- 53217
- 53218
- 53219
- 53220
- 53221
- 53222
- 53223
- 53224
- 53225
- 53226
- 53227
- 53228
- 53233
- 53235
- 53295
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: Tammy Baldwin (D), Ron Johnson (R)
Local surveillance camera contracts
Automated license plate reader contracts are approved locally, by city councils and county boards, not by Congress. These places in this district have a contract record documented from public sources:
Records compiled by Who Approved This, an independent public-records project. Approval dates, amounts, and end dates are cited to council agendas, minutes, and signed contracts.
Place list rebuilt from the Who Approved This public export on September 26, 2026.
Last updated September 27, 2026.
Data last checked September 26, 2026.
See how this district compares with another using Compare Districts.