Eldorado, Illinois

Eldorado
City of Eldorado
According to the 1945 Film Daily Yearbook, the 500-seat Grand was one of three movie houses in operation at that time, which also included the Orpheum and the Nox. Today the former Grand is used as a meeting place for a fraternal order.
Nickname: 
City of Daffodils
Location of Eldorado in Saline County, Illinois.
Coordinates: 37°48′41″N 88°26′30″W / 37.81139°N 88.44167°W / 37.81139; -88.44167
CountryUnited States
StateIllinois
CountySaline
Founded bySamuel Elder and Joseph Read
Area
 • Total
2.54 sq mi (6.59 km2)
 • Land2.50 sq mi (6.48 km2)
 • Water0.042 sq mi (0.11 km2)
Elevation
387 ft (118 m)
Population
 (2020)
 • Total
3,743
 • Density1,495.3/sq mi (577.32/km2)
Time zoneUTC-6 (CST)
 • Summer (DST)UTC-5 (CDT)
ZIP code
62930
Area code618
FIPS code17-23009
GNIS ID2394639

Eldorado (/ˌɛldəˈrd, -də/) is a city in Saline County, Illinois, United States. As of the 2020 census, Eldorado had a population of 3,743. The population peaked in 1980 at 5,198. Although the city's name is spelled as if it were Spanish, the name was originally "Eldereado" or "Elder-Reado" (depending on the source)—a combination of the last names of the town's two founders, Judge Samuel Elder, his son William, grandson Francis Marion, and neighbor Joseph Read, and his brother William. According to legend, a signpainter for the railroad painted the name "Eldorado" on the train depot; as a result, the spelling and pronunciation (el-do-RAY-doh) was forever changed.

Eldorado is included in the Illinois–Indiana–Kentucky tri-state area and is a bedroom community in the Harrisburg micropolitan statistical area.