
Eldorado City Hall · National Register of Historic Places
Eldorado’s story
168 years in pictures
Census counts: 1,445 in 1900, a peak of 5,198 in 1980, 3,743 in 2020. The archive holds 11 old photos and papers going back to 1937 and 2 maps from 1905 on.
1 place on the National Register of Historic Places.
Explore the history →
Getting set upMoving to Eldorado: who provides what
Who provides power, water and the rest in Eldorado, and how to reach them.
The full setup list →EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Sep 12, 2025.