Michigan / MI-09
Michigan District 9
Score
Irregularity score 16 Very compactLess compact than 9% of other congressional districts.
389th least compact of 429 nationally, 13th of 13 in Michigan.
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
- 0.35at least as compact as 79% of districts on this measure
Area compared with perimeter. Low for jagged or snaking edges.
- Reock
- 0.69at least as compact as 90% of districts on this measure
Area compared with the smallest circle around the district, counting only land. Low for stretched shapes.
- Convex hull
- 0.88at least as compact as 83% 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
63% 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
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.
- Port Huron cityall 28,983 residents
- New Baltimore cityall 12,117 residents
- Marysville cityall 9,997 residents
- Lapeer cityall 9,023 residents
- New Haven villageall 6,097 residents
- Holly villageall 5,997 residents
- Richmond cityall 5,878 residents
- St. Clair cityall 5,464 residents
- Pearl Beach communityall 4,698 residents
- Milford village4,555 of its 6,520 residents
And 65 smaller places. 77% of this district's people live outside any city, town or named community. How places are counted
ZIP codes
116 ZIP codes have residents in this district. 23 of them are split with other districts. A percentage is the share of that ZIP code's 2020 residents who live here.
Show all 116 ZIP codes
- 48001
- 48002
- 48003
- 48005
- 48006
- 48014
- 48022
- 48023
- 48027
- 48028
- 48032
- 48039
- 48040
- 48041
- 48042
- 48044 (61%)
- 48047
- 48048
- 48049
- 48050
- 48051
- 48054
- 48059
- 48060
- 48062
- 48063
- 48064
- 48065
- 48074
- 48079
- 48094
- 48095
- 48096
- 48097
- 48306 (46%)
- 48329 (1%)
- 48346 (99%)
- 48348
- 48350
- 48356
- 48357
- 48359 (99%)
- 48360
- 48362
- 48363
- 48367
- 48370
- 48371
- 48380 (36%)
- 48381 (50%)
- 48383 (10%)
- 48386 (1%)
- 48401
- 48410
- 48412
- 48413
- 48415 (1%)
- 48416
- 48419
- 48421 (96%)
- 48422
- 48423 (1%)
- 48426
- 48427
- 48428
- 48430 (3%)
- 48432
- 48434
- 48435
- 48438 (14%)
- 48439 (1%)
- 48440
- 48441
- 48442 (93%)
- 48444
- 48445
- 48446
- 48450
- 48453
- 48454
- 48455
- 48456
- 48461
- 48462 (99%)
- 48463 (1%)
- 48464 (92%)
- 48465
- 48466
- 48467
- 48468
- 48469
- 48470
- 48471
- 48472
- 48475
- 48701
- 48720
- 48723
- 48725
- 48726
- 48727
- 48729
- 48731
- 48733
- 48734 (2%)
- 48735
- 48741
- 48744
- 48746 (80%)
- 48754
- 48755
- 48757 (75%)
- 48759
- 48760
- 48767
- 48768 (99%)
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. Michigan 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 Michigan for the November 3, 2026 election aren't available yet.
Michigan's senators
- Gary C. Peters, DemocratSeat on the November 3, 2026 ballot: results aren't available yet.
- Elissa Slotkin, Democrat
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 Michigan
- Very compact (0 to 19)
- Compact (20 to 39)
- Middle (40 to 59)
- Irregular (60 to 79)
- Very irregular (80 to 100)
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