According to a report by House Fresh, Baltimore, Maryland has been ranked as the dirtiest city in the U.S., based on the number of 311 ... Meanwhile, the cleanest ZIP code in the nation is located ...

Singapore was just named the cleanest city in the world ... As for the worst offender, the number one dirtiest city on the list went to Rome, with residents there self-reporting frustrations ...

Indore has earned the title of India's cleanest city for seven consecutive years through strong civic planning and community involvement. When most international tourists plan their trip to India ...