
Fort Union Trading Post National Historic Site Historic District (Boundary Increase) · National Register of Historic Places
Williston’s story
139 years in pictures
Fort Union Trading Post National Historic Site Historic District (Boundary Increase) is a National Historic Landmark, the National Register’s top tier.
Census counts: 295 in 1890, 29,160 in 2020. The archive holds 6 old photos and papers going back to 1880 and 3 maps from 1959 on.
6 places on the National Register of Historic Places.
Explore the history →
Getting set upMoving to Williston: who provides what
Who provides power, water and the rest in Williston, and how to reach them.
The full setup list →PowerMontana-Dakota Utilities11.1¢/kWh · EIA 2025HIFLD · EIA
WaterCity of Williston water systemNo health-based violations in 5 years · EPAEPA
Internet4 providers100% of addresses get 100/20 MbpsFCC
Trash & dumpNot on file yetWe don’t have Williston’s trash rules yet
Register to voteNot requiredNorth Dakota has no voter registration: you show ID at the polls.vote.govWho runs elections hereWilliams County AuditorWilliams County; contacts on the Handbook page.FVAP, Aug 2015
ZIP code5880158801 100%Census 2020
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Jul 30, 2024.