ZIP Code 57772 — Porcupine CDP, SD Demographics & Data

ZIP code 57772 covers Porcupine, SD in Oglala Lakota County with a population of about 1,057.

At a glance, the area shows median age of 32.2 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.

Median household income in ZIP 57772 is about $21,420 — about 71% below the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 85.5%; unemployment rate near 7.6%; 11.0% of adults with a bachelor’s degree or higher (about 22.7 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Wholesale trade, Other services, and Education; a mean commute of about 105.0 minutes (U.S. average near 26.8).

Housing tenure and rents show owner-occupancy near 67.8% (about 2.4 points above the national owner-occupancy rate (65.4%)).

FEMA’s National Risk Index rates natural-hazard risk for Porcupine CDP, SD as Relatively Low (composite score 49.8), which is near the middle of the national distribution. The strongest component scores on US5 are wildfire (96.9) and flood (19.0). 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 Porcupine CDP, SD show little to no average snow and around 19.9 inches of annual precipitation.

IRS migration statistics show a net inflow of about 65 for ZIP 57772 (Porcupine 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.