Kolonia is a coastal town and the capital of Pohnpei State in the Federated States of Micronesia (FSM). It was also the former FSM capital before being replaced by Palikir in 1989, located nearby to the southwest in the municipality of Sokehs. It has about 6,000 people.
Kolonia Town is located in the north central section of Pohnpei Island. It was formerly part of Nett municipality, but is a separate municipality since May 1965. The population of the town was 6,074 (2010 Census). It is the largest population center on Pohnpei and the commercial hub of the island. The land area of Kolonia amounts to 1.5 km², with a large number of buildings lying just outside the town limits.
Kolonia's history is deeply marked by Pohnpei's multiple foreign occupiers, and evidence of their former presence is found throughout the town and island. Traditionally, Pohnpei's power center was in Madolenihmw, on the southeastern part of the island. The area now known as Kolonia was called Mesenieng, which means "face of the wind" or "head wind." Spain first built the town in 1887 as an administrative and military capital and named it Santiago de la Ascensión. A fort, from which ruins known as the Spanish Wall remain, was built to protect the colonial government and garrison.
In 1899, as a consequence of the Spanish–American War, Germany purchased Pohnpei from Spain along with the rest of the Caroline Islands and established district offices in Kolonia. Roads and wharfs were built and buildings erected (a church bell tower and cemetery remain), but the town stayed relatively small as few German or other foreign settlers arrived to live on the island. Kolonia and northern Pohnpei were devastated by a typhoon in 1905.
Japan occupied Pohnpei in the first weeks of World War I as well as other German islands north of the equator. Unlike previous occupiers, the Japanese brought thousands of settlers to Micronesia, who outnumbered the indigenous population on some islands. These settlers, most of whom were Okinawans, vastly expanded the infrastructure in addition to establishing settlements elsewhere on Pohnpei. Visitors to Kolonia in the 1930s reported that they were able to walk the length of Namiki Street (now Kaselelhie Street) under shopkeepers' canopies without getting wet in the rain.