It means that the population living outside cities in more rural areas is steadily getting older, overall.
The average age of the population is getting older. And as you get older your hair gets.... greyer.
Khatauli Rural's population is 10,737.
The population of Narayanpur Rural is 5,221.
The population of Rural Metro is 8,000.
The population of Shravanabelgola - Rural - is 6,394.
Bingley Rural's population is 16,649.
Gurgaon Rural's population is 17,100.
Rewari - Rural -'s population is 4,453.
The population of Shrirampur- Rural - is 7,510.
Qanavat Rural District's population is 16,658.
The population of Najmabad Rural District is 7,663.
Sardabeh Rural District's population is 20,579.