Nemaha is a village in Nemaha County, Nebraska, United States. The population was 116 at the 2020 census. Nemaha was incorporated as a village in 1856. It was named from the Nemaha River. Nemaha is located at 40°20′20″N 95°40′31″W / 40.33889°N 95.67528°W. According to the United States Census Bureau, the village has a total area of 0.30 squ…Nemaha is a village in Nemaha County, Nebraska, United States. The population was 116 at the 2020 census. Nemaha was incorporated as a village in 1856. It was named from the Nemaha River. Nemaha is located at 40°20′20″N 95°40′31″W / 40.33889°N 95.67528°W. According to the United States Census Bureau, the village has a total area of 0.30 square miles, all land.