Kitaaiki

 is a village located in Nagano Prefecture, Japan. , the village had an estimated population of 755 in 350 households, and a population density of 13 persons per km². The total area of the village is .
Geography.
Kitaaiki is located in mountainous eastern Nagano Prefecture, bordered by Gunma Prefecture to the east. More than 90% of the village area is covered by mountains and forest. Mount Ogura (2,112 meters) is the highest point in the village.
Demographics.
Per Japanese census data, the population of Kitaaiki has decreased over the past 50 years.
Climate.
The village has a humid continental climate characterized by hot and humid summers, and cold winters (Köppen climate classification "Dfb"). The average annual temperature in Kitaaiki is 7.5 °C. The average annual rainfall is 1513 mm with September as the wettest month. The temperatures are highest on average in August, at around 20.2 °C, and lowest in January, at around −4.7 °C.
History.
The area of present-day Kataaiki was part of ancient Shinano Province, and was mentioned in Muromachi period records. The present village of Kitaaiki was created with the establishment of the modern municipalities system on April 1, 1889.
Education.
Kitaaiki has one public elementary school operated by the village government. The village shares a public middle school with neighboring Minamiaika. The village does not have a high school.