
Aaron Kinney House · National Register of Historic Places
Portsmouth’s story
223 years in pictures
Its 35 National Register listings are more than in 97% of Ohio towns with a listing.
Census counts: 527 in 1820, a peak of 42,560 in 1930, 18,252 in 2020. The archive holds 6 old photos and papers going back to 1833 and 2 maps from 1957 on.
- 1803Portsmouth is settled
Explore the history →
Getting set upMoving to Portsmouth: who provides what
Who provides power, water and the rest in Portsmouth, 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.