Ohio / OH-04
Ohio District 4
Score
Irregularity score 53 Middle of the packLess compact than 55% of other congressional districts.
192nd least compact of 429 nationally, 8th of 15 in Ohio.
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
- 0.30at least as compact as 69% of districts on this measure
Area compared with perimeter. Low for jagged or snaking edges.
- Reock
- 0.39at least as compact as 23% of districts on this measure
Area compared with the smallest circle around the district, counting only land. Low for stretched shapes.
- Convex hull
- 0.78at least as compact as 50% 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
9% 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
New lines for 2026
Ohio used a different map in the 2026 election than in 2024: the 2025 Ohio Redistricting Commission plan. Source: Ohio Secretary of State (Directive 2025-55)
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.
- Springfield cityall 58,662 residents
- Delaware city41,294 of its 41,302 residents
- Marion cityall 35,999 residents
- Lima cityall 35,579 residents
- Mansfield city28,862 of its 47,534 residents
- Marysville cityall 25,571 residents
- Sidney cityall 20,589 residents
- Bellefontaine cityall 14,115 residents
- Urbana cityall 11,115 residents
- Van Wert cityall 11,092 residents
And 124 smaller places. 42% of this district's people live outside any city, town or named community. How places are counted
ZIP codes
159 ZIP codes have residents in this district. 57 of them are split with other districts. A percentage is the share of that ZIP code's 2020 residents who live here.
Show all 159 ZIP codes
- 43003
- 43007
- 43009
- 43010
- 43011 (13%)
- 43015 (87%)
- 43016 (8%)
- 43017 (18%)
- 43019 (22%)
- 43029 (29%)
- 43032 (33%)
- 43035 (2%)
- 43036
- 43040
- 43044 (97%)
- 43045
- 43047
- 43050 (1%)
- 43060
- 43061
- 43064 (59%)
- 43065 (16%)
- 43066
- 43067
- 43070
- 43072
- 43074 (1%)
- 43077
- 43078
- 43084
- 43140 (1%)
- 43302 (99%)
- 43310
- 43311
- 43314 (97%)
- 43315
- 43317
- 43318
- 43319
- 43320
- 43321
- 43322
- 43323 (5%)
- 43324
- 43325
- 43326
- 43331
- 43332 (98%)
- 43333
- 43334 (97%)
- 43336
- 43337 (92%)
- 43338
- 43340
- 43341
- 43342
- 43343
- 43344
- 43345
- 43346
- 43347
- 43348
- 43350
- 43356
- 43357
- 43358
- 43360
- 44813 (96%)
- 44822 (68%)
- 44833 (16%)
- 44843 (92%)
- 44849 (2%)
- 44864 (21%)
- 44902 (78%)
- 44903 (46%)
- 44904 (75%)
- 44905 (6%)
- 44906 (21%)
- 44907 (87%)
- 45302
- 45306
- 45310 (75%)
- 45312 (2%)
- 45317 (50%)
- 45319
- 45333
- 45334
- 45336
- 45340
- 45341 (56%)
- 45344 (67%)
- 45349
- 45353
- 45356 (3%)
- 45360
- 45363
- 45365
- 45369 (62%)
- 45372
- 45380 (1%)
- 45388 (2%)
- 45389
- 45502 (80%)
- 45503
- 45504
- 45505 (99%)
- 45506 (98%)
- 45801
- 45804
- 45805
- 45806
- 45807
- 45808
- 45809
- 45810 (97%)
- 45812
- 45817 (81%)
- 45819
- 45820
- 45822
- 45826
- 45828
- 45830 (21%)
- 45832 (99%)
- 45833 (97%)
- 45835
- 45836 (99%)
- 45838
- 45843 (61%)
- 45844 (6%)
- 45845
- 45846 (94%)
- 45849 (14%)
- 45850
- 45854
- 45859
- 45860
- 45862
- 45863
- 45865
- 45866
- 45869
- 45870
- 45871
- 45874
- 45877 (5%)
- 45882
- 45883 (99%)
- 45884
- 45885
- 45886 (56%)
- 45887
- 45888
- 45891
- 45894
- 45895
- 45896
- 45898
- 45899
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
Ohio drew new lines for 2026, and no 2024 results have been published for them. Where the votes come from
U.S. House
Jim Jordan, Republican
Elected November 3, 2026, takes office January 3, 2027.
Unofficial results from the Ohio Secretary of State, checked November 6, 2026. A race shows a winner once news decision desks have called it. Results become official when the state certifies them. Where this comes from
Ohio's senators
- Jon Husted, RepublicanSeat on the November 3, 2026 ballot: Sherrod Brown, Democrat, won and takes office January 3, 2027.
- Bernie Moreno, 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 Ohio
- 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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