Wisconsin / WI-04
Wisconsin District 4
Score
Irregularity score 23 CompactLess compact than 18% of other congressional districts.
354th least compact of 429 nationally, 6th of 8 in Wisconsin.
A score describes shape, not intent. Coastlines, rivers and the Voting Rights Act can all make a district irregular. How scores work
The three measures
- Polsby-Popper
- 0.32at least as compact as 75% of districts on this measure
Area compared with perimeter. Low for jagged or snaking edges.
- Reock
- 0.53at least as compact as 64% of districts on this measure
Area compared with the smallest circle around the district, counting only land. Low for stretched shapes.
- Convex hull
- 0.91at least as compact as 91% of districts on this measure
Area compared with a rubber band stretched around the district, counting only land. Low for bites and tentacles.
Each measure runs from 0 to 1, where 1 is a perfect circle or a shape with no dents.
The state's edge
22% of this district's border is the state's edge: a coastline, a national border or a state line. Mapmakers don't choose those lines. A ragged one, like a coastline or a river, lowers Polsby-Popper. Reock and convex hull count only the state's own land, so water and neighboring states don't count against them. More on the state's edge
Who lives here
Most of this district's voting-age residents (52.9%) belong to minority groups. The largest are Black (30.6%) and Hispanic or Latino (15.3%). The Voting Rights Act can require districts that keep a minority community together so it can elect candidates it prefers, and those districts can be irregular on purpose. A district like this isn't necessarily drawn for that reason, and the site doesn't know whether this one was. Figures are from the 2020 Census. How these are counted
Cities and towns
The largest places with people in this district, from the 2020 Census. A place split between districts shows how many of its residents live in this one.
- Milwaukee city576,983 of its 577,222 residents
- Wauwatosa cityall 48,387 residents
- West Allis city39,248 of its 60,325 residents
- Whitefish Bay villageall 14,954 residents
- Shorewood villageall 13,859 residents
- Glendale cityall 13,357 residents
- Brown Deer villageall 12,507 residents
- Fox Point villageall 6,934 residents
- Bayside village4,378 of its 4,482 residents
- West Milwaukee villageall 4,114 residents
And 3 smaller places. How places are counted
ZIP codes
30 ZIP codes have residents in this district. 10 of them are split with other districts. A percentage is the share of that ZIP code's 2020 residents who live here.
- 53202
- 53203
- 53204
- 53205
- 53206
- 53207 (99%)
- 53208
- 53209
- 53210
- 53211
- 53212
- 53213
- 53214 (77%)
- 53215
- 53216
- 53217 (99%)
- 53218
- 53219 (98%)
- 53220 (44%)
- 53221 (73%)
- 53222
- 53223
- 53224
- 53225 (99%)
- 53226
- 53227 (43%)
- 53228 (23%)
- 53233
- 53235 (1%)
- 53295
These are the Census Bureau's ZIP code areas, which match residential ZIP codes closely. ZIP codes used only for PO boxes or a single organization aren't included. How ZIP codes are matched
2024 presidential vote
Shares of the votes for the two of them; other candidates are left out. Wisconsin used the same lines in 2024, so this is added up from precinct results. A precinct split between districts is divided by its House votes, so the figures are close estimates. Where the votes come from
U.S. House
Statewide results from Wisconsin for the November 3, 2026 election aren't available yet.
Wisconsin's senators
- Tammy Baldwin, Democrat
- Ron Johnson, Republican
Senators are elected by the whole state, so district lines don't change who they are. Senators serving as of November 6, 2026. Senators elected in November 2026 take office January 3, 2027. Where this comes from
Where it sits in Wisconsin
- Very compact (0 to 19)
- Compact (20 to 39)
- Middle (40 to 59)
- Irregular (60 to 79)
- Very irregular (80 to 100)
The area outlined with dashes on the map, enlarged so its smaller districts can be seen.
Spot a problem with this district? Email us about WI-04.