
Petersburg Mill · National Register of Historic Places
Union Township’s story
Union Township in pictures
Census counts: 889 in 1840, a low of 432 in 1930, 868 in 2020. The archive holds 5 old photos and papers going back to 1894 and 5 maps from 1910 on.
1 place on the National Register of Historic Places.
Explore the history →
Getting set upMoving to Union Township: who provides what
Who provides power, water and the rest in Union Township, 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 Aug 3, 2026.