|— City —|
|• Mayor||Martin O'Boyle|
|• City||9.48 sq mi (24.55 km2)|
|• Land||9.48 sq mi (24.55 km2)|
|• Water||0 sq mi (0 km2)|
|Elevation||797 ft (243 m)|
|• Estimate (2012)||5,903|
|• Density||596.1/sq mi (230.2/km2)|
|• Metro||382,630 (135th)|
|Time zone||Central (CST) (UTC-6)|
|• Summer (DST)||CDT (UTC-5)|
|GNIS feature ID||0465072|
|Website||City of Eldridge|
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.
Eldridge faced several challenges during its early years. The railroad faltered financially during the 1880s and was re-located to Oxford Junction, while a smallpox epidemic several years later was said to have totally isolated the city. A fire heavily damaged the city's business district in 1904, and in 1918 a tornado of unknown strength heavily damaged or destroyed several residences and the church, and killed one person. Each time, the city recovered, and the farming community maintained its status as a grain and livestock shipping center.
The city began growing in population during the 1950s, starting with the formation of the Scott County Library System (a countywide network of libraries serving smaller communities in the area) in 1950, and the North Scott Community School District in 1956. By the late 1960s, the population had grown to more than 1,000 residents, and with the creation of several industrial parks to encourage new business development, the city continued to grow.
2010 census 
As of the census of 2010, there were 5,651 people, 2,213 households, and 1,576 families residing in the city. The population density was 596.1 inhabitants per square mile (230.2 /km2). There were 2,296 housing units at an average density of 242.2 per square mile (93.5 /km2). The racial makeup of the city was 96.8% White, 0.5% African American, 0.2% Native American, 0.5% Asian, 0.3% from other races, and 1.8% from two or more races. Hispanic or Latino of any race were 2.1% of the population.
There were 2,213 households of which 39.1% had children under the age of 18 living with them, 58.2% were married couples living together, 9.9% had a female householder with no husband present, 3.1% had a male householder with no wife present, and 28.8% were non-families. 24.7% of all households were made up of individuals and 8.6% had someone living alone who was 65 years of age or older. The average household size was 2.55 and the average family size was 3.07.
The median age in the city was 36.7 years. 28.8% of residents were under the age of 18; 6.3% were between the ages of 18 and 24; 27.4% were from 25 to 44; 26.4% were from 45 to 64; and 11.1% were 65 years of age or older. The gender makeup of the city was 48.0% male and 52.0% female.
2000 census 
As of the census of 2000, there were 4,159 people, 1,501 households, and 1,179 families residing in the city. The population density was 442.4 people per square mile (170.8/km²). There were 1,540 housing units at an average density of 163.8 per square mile (63.3/km²). The racial makeup of the city was 98.58% White, 0.24% African American, 0.05% Native American, 0.22% Asian, 0.17% from other races, and 0.75% from two or more races. Hispanic or Latino of any race were 1.61% of the population.
There were 1,501 households out of which 44.3% had children under the age of 18 living with them, 64.8% were married couples living together, 11.3% had a female householder with no husband present, and 21.4% were non-families. 18.0% of all households were made up of individuals and 5.5% had someone living alone who was 65 years of age or older. The average household size was 2.77 and the average family size was 3.15.
In the city the population was spread out with 31.5% under the age of 18, 7.0% from 18 to 24, 30.2% from 25 to 44, 23.8% from 45 to 64, and 7.5% who were 65 years of age or older. The median age was 35 years. For every 100 females there were 94.1 males. For every 100 females age 18 and over, there were 92.0 males.
The median income for a household in the city was $54,167, and the median income for a family was $62,401. Males had a median income of $45,407 versus $23,285 for females. The per capita income for the city was $21,514. About 3.2% of families and 4.5% of the population were below the poverty line, including 7.8% of those under age 18 and none of those age 65 or over.
Eldridge has a mayor-council form of government with a mayor and five city council members. All council members are at-large. City council meetings are conducted bi-monthly on the first and third Mondays of each month at the city hall. The city is managed by a city administrator and assistant city administrator.
Eldridge hosts three of the seven public schools in the North Scott Community School District, which has its administrative offices there as well. The North Scott High School, North Scott Junior High and Ed White Elementary School are in Eldridge. The other four elementary schools in the district are in the outlying communities of Donahue, Long Grove, Park View and Princeton.
Residents are represented by a seven-member board of education, which conducts bi-monthly meetings on the second and fourth Mondays of each month at the Administration Center.
Notable people 
- "US Gazetteer files 2010". United States Census Bureau. Retrieved 2012-05-11.
- "American FactFinder". United States Census Bureau. Retrieved 2012-05-11.
- "Population Estimates". United States Census Bureau. Retrieved 2013-05-23.
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- "Total Population for Iowa's Incorporate Places: 1850–2010". State Library of Iowa. Retrieved 2011-03-06.
- Eldridge city, Iowa – Fact Sheet – American FactFinder, (Factfinder.census.gov) Accessed 2010-09-16
- DeVrieze, Craig (June 1, 2010). "Slow start, slim schedule block Bader’s progress". Quad-City Times. Retrieved 2011-09-03.
|Wikimedia Commons has media related to: Eldridge, Iowa|
- City of Eldridge
- North Scott Chamber of Commerce
- Scott County Library System
- City-Data Comprehensive statistical data and more about Eldridge