ZIP Code 57571 — St. Charles CDP, SD Demographics & Data

ZIP code 57571 covers St. Charles, SD in Gregory County with a population of about 39.

At a glance, the area shows median age of 58.8 versus a U.S. median of about 38.9.

It sits in telephone area code 605; U.S. House district SD-00; the SIOUX FALLS (MITCHELL) media market.

St. Charles, SD is tagged as a Tribal Nation community context (place names indicate a tribal nation community). Local search often includes tribal government offices, public safety, and Indian Health Service (IHS) / wellness topics alongside standard ZIP demographics.

On socioeconomic markers, US5 shows a poverty rate of 20.5%; unemployment rate near 15.4%; 8.0% of adults with a bachelor’s degree or higher (about 25.7 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Construction, Education, and Healthcare; a mean commute of about 9.0 minutes (U.S. average near 26.8).

Median home value is about $72,500 — about 79% below the U.S. median home value ($348,079).

Housing tenure and rents show owner-occupancy near 90.5% (about 25.1 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 57571 in St. Charles, SD, a household would need roughly $20,000 in annual income under a 20% down, 30-year loan at 6.8% (illustrative), keeping housing costs near 28% of income. Estimated monthly PITI is about $466. Rates, taxes, insurance, and HOA fees vary — treat this as a planning estimate, not a lender quote.

FEMA’s National Risk Index rates natural-hazard risk for St. Charles CDP, SD as Very Low (composite score 16.2), which is relatively lower than many U.S. communities. The strongest component scores on US5 are wildfire (70.0) and flood (15.4). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.

Climate normals for St. Charles CDP, SD show little to no average snow and around 25.9 inches of annual precipitation.

IRS migration statistics show a net inflow of about 2 for ZIP 57571 (St. Charles CDP, SD) on US5’s published series — a signal of people/tax filers moving in relative to those leaving. Inflows often track job growth, housing demand, or lifestyle migration; treat the figure as a directional indicator rather than a precise headcount.