A total of 15 areas would be considered secure. (Check In First comment👇)

States hosting critical military assets or large concentrations of infrastructure are often considered high-value targets. In contrast, states with fewer military installations or lower population density may be less likely to experience direct attacks.

The Midwest Missile Belt: America’s Most Dangerous Region
Several studies identify the U.S. Midwest missile silo region as the area most at risk during a nuclear conflict. This region contains a large portion of America’s land-based nuclear weapons.

According to analyses using nuclear fallout modeling, eight states would face the highest danger due to their proximity to missile silos:

Montana