Eldridge is a city in Scott County, Iowa, United States. The population was 6,726 in the 2020 Census; Eldridge is a rural community and part of t…Eldridge is a city in Scott County, Iowa, United States. The population was 6,726 in the 2020 Census; Eldridge is a rural community and part of the Quad Cities metropolitan area. Jacob M. Eldridge, the city's namesake, arrived in central Scott County in 1846, having purchased land for $1.25 per acre. Immigrants from Germany soon followed, and northern Scott County slowly began to develop. Railroads were developed during the 1860s, bringing more settlers. Eldridge Junction, built on land donated by Jacob Eldridge, was incorporated on July 2, 1871. A post office and a Presbyterian church were soon built.