5. Hilo, HawaiiThere are many safe cities for women in the United States, but for a vacation you can't beat Hawaii. Hilo is on the island of Hawaii, also known as the “Big Island” to avoid any confusion over the name.
Hilo is the largest settlement on the island, with over 40,000 people.
Be sure to check out the natural scenery with a trip to the Akaka Falls State Park, where a beautiful 400-foot high waterfall will amaze you. Hilo is also home to the Mauna.