sodom and Gomorrah

I'm just thinking about all the lost people in Sodom and Gomorrah. We are going to read about the destruction tomorrow. But, as I was reading the passage today I realized that in today's terms, Sodom was an "Unreached" city. Out of the whole population, less than 10 righteous people could be identified. No one is righteous on their own. So, this translates to tell me that less than 10 people were followers of the One True God.

Without doubt, God was just in destroying the sinful cities. I'm not questioning that fact. I'm just thinking of other cities around our world with so few "righteous" people.