
Judge Flanagan Residence · National Register of Historic Places
Peoria’s story
346 years in pictures
Its founding year, 1680, is the earliest of any Illinois town we grade. Its 26 National Register listings are more than in 97% of Illinois towns with a listing.
Census counts: 1,467 in 1840, 113,150 in 2020. The archive holds 21 old photos and papers going back to 1857 and 7 maps from 1905 on.
Explore the history →
Getting set upMoving to Peoria: who provides what
Who provides power, water and the rest in Peoria, 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.