Washington Zombie Survival Index: 84/100

Personal assessment

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The three tests

Washington scored three times

A state that handles shamblers can get erased by sprinters. Here is how Washington performs under each outbreak model.

Walking DeadThe Walking Dead

90

Slow zombies reward distance, terrain, food and freshwater. Washington has about 8,001,020 people and 13.7 million acres in farm operations, plus 1.12 million cattle and calves, 7.163 billion pounds of utilised apples and 141.46 million bushels of wheat. Against walkers there is time to turn all of that into a defensible long-term system.

World War ZWorld War Z

79

Fast zombies turn evacuation into a race against the road network, and this is where Washington pays. Seattle–Tacoma concentrates the population, Puget Sound geography constrains movement, and the Cascade passes are few enough that losing one reshapes the map.

Last of UsThe Last of Us

84

Yes, we know they're not technically zombies. This asks whether a settlement can still work after modern supply chains stop. Washington is close to ideal on paper: elite freshwater, elite hydroelectricity and an unusually diverse food base. Seismic risk is the asterisk.

What helps

Cascade Mountains, Olympic Mountains, forests, Columbia Basin, river valleys, coast and high desert
Columbia, Snake and Puget Sound watersheds, mountain snowpack, reservoirs, groundwater and abundant west-side precipitation
13.7 million acres in farm operations
1.12 million cattle and calves
5.831 billion pounds of milk, 7.163 billion pounds of utilised apples, 87.188 million hundredweight of potatoes and 141.46 million bushels of wheat in 2025
One of the country's strongest hydroelectric systems with substantial wind, natural gas and growing solar resources
Joint Base Lewis-McChord, Naval Base Kitsap, Naval Station Everett, Fairchild Air Force Base and Washington National Guard forces

What hurts

The Seattle–Tacoma concentration and the Puget Sound geography around it
Cascadia earthquake risk, wildfire, volcanic hazards, flooding, landslides, drought and winter storms
Remote safety can mean thinner medicine and longer repair distances
Main corridors become population funnels after a late evacuation

Get away from the Puget Sound urban corridor early, then favour eastern Cascade foothill or inland agricultural communities with water, farms, hydropower access and multiple routes.

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The reason for the score

Washington's zombie superpowers

Cascade Mountains, Olympic Mountains, forests, Columbia Basin, river valleys, coast and high desert determine movement, observation, evacuation and settlement options. The best refuge needs terrain plus water plus food plus energy plus access.

1 · Hydropower and water

The Columbia system gives Washington an unusual combination of abundant freshwater and renewable electricity in the same watershed.

2 · Agriculture

USDA's 2025 overview shows 13.7 million farm acres, 7.16 billion pounds of utilised apples, 87.2 million hundredweight of potatoes and 141.5 million bushels of wheat.

3 · Mountains and forests

The Cascades and Olympics create elite defensive geography on two sides of the populated corridor.

4 · Food diversity

Dairy, cattle, fruit, grain, potatoes and fisheries give Washington an unusually broad long-term food base.

The catch

One metro, one fault, one fire season

Seattle–Tacoma

The Puget Sound metro is the state's obvious first-wave pressure point and its movement bottleneck.

Cascadia earthquake

A major quake could damage bridges, ports, roads, power and water systems simultaneously.

Wildfire

The inland and mountain refuges most attractive for defence can face serious fire risk.

The framework

25 survival factors, scored 1–10

Every state is measured on the same 25 factors. Weighting shifts by scenario — terrain matters more against sprinters, agriculture matters more in a long collapse.

01 Population density Moderate statewide density 6/10

02 Major city exposure Seattle-Tacoma is the major concentration 4/10

03 Road escape capacity Strong roads, but passes and Puget Sound geography constrain movement 8/10

04 Freshwater availability Elite rivers, snowpack and reservoirs 10/10

05 Agricultural capacity 13.7 million farm acres 10/10

06 Food self-sufficiency Exceptional apples, potatoes, wheat, dairy and livestock 10/10

07 Wilderness & remote land Huge mountain and forest remote areas 10/10

08 Natural defensive terrain Cascades and Olympics are elite terrain 10/10

09 Climate survivability Generally survivable climate 8/10

10 Winter zombie suppression Mountain winters provide useful suppression 7/10

11 Natural disaster risk Earthquake, wildfire, volcano and flood risk 4/10

12 Energy production Elite hydroelectric generation 10/10

13 Off-grid energy potential Hydro, wind and solar options are strong 9/10

14 Medical resources Excellent major-city medicine 9/10

15 Military & Guard presence Very large joint military footprint 10/10

16 Emergency management Strong earthquake and wildfire emergency capability 9/10

17 Supply & logistics Major ports, rail and air logistics 10/10

18 Infrastructure vulnerability Seismic and pass/bridge dependencies are significant 5/10

19 Survival resource availability Food, water, timber, fisheries and energy are exceptional 10/10

20 Evacuation & refuge potential Excellent inland refuge potential 9/10

21 Natural barriers & water access Mountains, rivers, coast and Puget Sound create barriers 10/10

22 Distance from population centers Eastern areas provide distance from Seattle 8/10

23 Chokepoint & bridge dependency Cascade passes and Sound bridges and ferries can choke 6/10

24 Hunting, fishing & foraging Elite hunting and fishing 10/10

25 Long-term settlement potential Excellent long-term potential inland 9/10

Tactics

What works, by scenario

Strategy	Walking Dead	World War Z	Last of Us
Rural farm or ranch with independent water	Excellent	Very good if reached early	Excellent
Small agricultural town	Very good	Good	Excellent
Remote site with no food system	Good early	Very good for isolation	Poor long-term
Major highway evacuation	Good early, bad late	Terrible late	Poor after collapse
Major metro shelter	Poor	Terrible	Poor
Distributed renewable power	Very good	Good	Excellent
Hunting and fishing supplement	Very good	Good	Very good
One-road refuge	Risky	Risky	Risky

Geography

Where to be

Best overall

Eastern Cascade foothills / inland agricultural valleys

Terrain, water, farms and lower population pressure all align here.

Mountains between you and Puget Sound
Irrigated farmland immediately nearby
Hydropower access on the same grid
More than one route east

Runner-up

Columbia Basin agricultural communities away from major cities

Exceptional food and energy, though the terrain is considerably more open.

Third

Northeast Washington small communities

Forests, water and low density, with longer winter and logistics distances.

Where not to be

Avoid early

Seattle-Tacoma corridor

Population concentration plus regional bridge and road constraints dominate.

Avoid

Any single-pass Cascade evacuation

If the pass closes, the map becomes decorative.

Avoid

One-road forest community during fire season

Wildfire can isolate it instantly.

Verdict

84 out of 100 · Grade B · Rank #15

Washington has exceptional long-term survival resources once survivors escape the Puget Sound population corridor. It offers abundant freshwater, mountains, forests, wheat, potatoes, fruit, fisheries, hydropower, coastline access, and remote refuge areas on both sides of the Cascades. The catch is Seattle-area congestion, earthquakes, volcanoes, wildfire, winter passes, and the dry conditions east of the mountains. The state is highly capable, but geography can separate survivors from the resources they need.

Walking Dead 90. World War Z 79. Last of Us 84.

Get away from the Puget Sound urban corridor early, then favour eastern Cascade foothill or inland agricultural communities with water, farms, hydropower access and multiple routes.

See the national survey board

Method & sources

Where the numbers come from

The Zombie Survival Index is a fictional entertainment ranking that uses real public data as its inputs. Every state is scored on the same 25 factors under three outbreak models, and the overall number blends those results. All fifty states have been assessed and normalised against the same national scoring set.

U.S. Census Bureau, 2025 Population Estimates and QuickFacts
USDA National Agricultural Statistics Service, 2025 State Agriculture Overview
U.S. Energy Information Administration, State Electricity Profile
State water-resource and environmental agencies
State emergency-management agencies
U.S. Department of Defense and National Guard installation sources
State wildlife, hunting and fishing agencies
NOAA and state climatology and hazard sources