Washington / WA-04
Washington District 4
Score
Irregularity score 69 IrregularLess compact than 75% of other congressional districts.
109th least compact of 429 nationally, 2nd of 10 in Washington.
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
- 0.23at least as compact as 44% of districts on this measure
Area compared with perimeter. Low for jagged or snaking edges.
- Reock
- 0.38at least as compact as 21% of districts on this measure
Area compared with the smallest circle around the district, counting only land. Low for stretched shapes.
- Convex hull
- 0.69at least as compact as 27% 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
23% 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.
- Yakima cityall 96,968 residents
- Kennewick cityall 83,921 residents
- Pasco cityall 77,108 residents
- Richland cityall 60,560 residents
- Moses Lake cityall 25,146 residents
- Sunnyside cityall 16,375 residents
- West Richland cityall 16,295 residents
- East Wenatchee cityall 14,158 residents
- Grandview cityall 10,907 residents
- Terrace Heights communityall 9,244 residents
And 89 smaller places. 26% of this district's people live outside any city, town or named community. How places are counted
ZIP codes
93 ZIP codes have residents in this district. 13 of them are split with other districts. A percentage is the share of that ZIP code's 2020 residents who live here.
Show all 93 ZIP codes
- 98602
- 98605 (65%)
- 98613
- 98617
- 98619
- 98620
- 98623
- 98628
- 98635
- 98650
- 98670
- 98672 (98%)
- 98673
- 98802 (98%)
- 98812
- 98813
- 98814
- 98816 (1%)
- 98819
- 98823
- 98824
- 98827
- 98829
- 98830
- 98832 (94%)
- 98833
- 98834
- 98837
- 98840
- 98841
- 98843
- 98844
- 98845
- 98846 (99%)
- 98848
- 98849
- 98850
- 98851
- 98853
- 98855
- 98856
- 98857 (92%)
- 98858
- 98859
- 98860
- 98862
- 98901 (99%)
- 98902
- 98903
- 98908
- 98921
- 98923
- 98930
- 98932
- 98933
- 98935
- 98936
- 98937
- 98938
- 98939
- 98942
- 98944
- 98947
- 98948
- 98951
- 98952
- 98953
- 99103 (7%)
- 99115
- 99116
- 99123
- 99124
- 99133 (81%)
- 99135
- 99155
- 99166 (2%)
- 99301 (98%)
- 99320
- 99321
- 99322
- 99336
- 99337
- 99338
- 99344 (92%)
- 99345
- 99346
- 99349
- 99350
- 99352
- 99353
- 99354
- 99356
- 99357
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. Washington 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
Amanda McKinney, Republican
Elected November 3, 2026, takes office January 3, 2027.
Unofficial results from the Washington 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
Washington's senators
- Maria Cantwell, Democrat
- Patty Murray, 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 Washington
- 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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