Demographics & People — Pennington County, South Dakota

Population & Households

Population (official)110,386
Median Age39.60
Veterans10,381
Housing Units49,747
Uninsured1,864

Migration

Inflow125,144
Outflow122,990
Net2,154
GrowingYes
Year2022-2023

Source: Census ACS 5-Year 2022. Official numbers: Census ACS 5-Year 2022 — county-level query.

Data provenance: aggregated from town-level sources, county.json. Rebuilt 2026-04-13T15:43:30.493051+00:00; aggregated 2026-04-13T16:08:25.592499+00:00.