Cost Of Living Increase 2025 Washington State. The cost of living in washington state is highly variable, with cities like seattle being significantly more expensive than the u.s. In washington, the cost of living is 11.6% higher than it is on average nationwide, according to the composite cost of living index published by the missouri economic.

The cost of living in washington state is highly variable, with cities like seattle being significantly more expensive than the u.s. The increase also applies to pension benefits paid to family.