
Plainfield Halfway House (Additional Documentation) · National Register of Historic Places
Plainfield’s story
210 years in pictures
Its founding year, 1816, comes before those of 98% of the Illinois towns we grade with a known year.
Census counts: 723 in 1870, 44,762 in 2020. The archive holds 12 old photos and papers going back to 1907 and 7 maps from 1892 on.
4 places on the National Register of Historic Places.
- 1816Plainfield is settled
Explore the history →
Getting set upMoving to Plainfield: who provides what
Who provides power, water and the rest in Plainfield, 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.