indicating which county the municipality is situated in, and the last two specific for the municipality. The code system was introduced with the municipal reform of 1952. There were three different categories of municipalities at the time, which affected the number that they were allocated. Those with stad-status (cities) were given codes ending in 80 to 99, smaller towns (köping) 60 to 79 and rural municipalities 01 to 59. The county seats were allocated codes ending in 80. As part of the reform in the early 1970s, the categorization of municipalities was abolished, but the code was in most cases preserved. When several municipalities were merged, the code for the biggest municipality was kept. Philippines Structure Usually known as the municipal code or , the number comprises nine digits rrppmmbbb, for which rr = region code, pp = province code, code, bbb = barangay code. For example, the municipality of Ubay, Bohol has a code of 071246000 meaning region 07 (Central Visayas), province 12 (Bohol), municipality 46 (Ubay) with barangay code of zero signifying "not at this level." Bongbong, one of its constituent barangays, has a code of 071246007. The province code is unique and is independent of the region code. All PSGCs, are therefore, unique. See also Municipalities of Sweden List of municipalities of Sweden (with municipality codes) References External links City listing with municipality key City listing with municipality key Geocodes Standards Public law