ZIP Code 57799 — Spearfish city, SD Demographics & Data

ZIP code 57799 covers Spearfish, SD in Lawrence County with a population of about 578.

At a glance, the area shows median age of 19.6 versus a U.S. median of about 38.9.

It sits in telephone area code 605; U.S. House district SD-00; the RAPID CITY media market.

Spearfish, SD sits in a university / college context (near black hills state university (0.3 mi)). Expect stronger interest in student housing, rentals, walkability, transit, and a younger adult age mix versus typical suburban ZIPs.

On socioeconomic markers, US5 shows a unemployment rate near 9.8%; 21.1% of adults with a bachelor’s degree or higher (about 12.7 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Food services, Retail trade, and Education; about 13.0% of workers reporting work-from-home (about 2.2 points below the U.S. share (15.2%)); a mean commute of about 180.0 minutes (U.S. average near 26.8).

FEMA’s National Risk Index rates natural-hazard risk for Spearfish city, SD as Relatively Low (composite score 49.3), which is near the middle of the national distribution. The strongest component scores on US5 are wildfire (93.2) and flood (57.1). 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 Spearfish city, SD show little to no average snow and around 21.4 inches of annual precipitation.

IRS migration statistics show a net inflow of about 35 for ZIP 57799 (Spearfish city, 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.