5,105 Postal Codes in Bulgaria

The average area for zip codes in Bulgaria is 23.9 km² with the largest being 4580 in Batak, Pazardzhik at 564.5 km² and the smallest being 1734 in Sofia, Sofiya-Grad at 42,579 m². In Bulgaria the average population for a postal code is 1,537 with the most populated being zip code 4004 in Plovdiv, Plovdiv at 72,753. The postal code with the oldest population is 2578 in Oblast Kyustendil with a median age of 65.2. The fastest growing postal code is 2953 in Osina, Blagoevgrad with population growth of 510.5% from 2000 to 2015, an average of 12.8% per year.