ZIP Code 57433 — Columbia city, SD Demographics & Data

ZIP code 57433 covers Columbia, SD in Brown County with a population of about 384.

At a glance, the area shows median age of 40.6 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.

Columbia, 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.

Median household income in ZIP 57433 is about $71,215 — about 5% below the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 0.5%; unemployment rate near 0.0%; 19.6% of adults with a bachelor’s degree or higher (about 14.1 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Agriculture, Construction, and Other services; about 12.0% of workers reporting work-from-home (about 3.2 points below the U.S. share (15.2%)); a mean commute of about 176.0 minutes (U.S. average near 26.8).

Housing tenure and rents show owner-occupancy near 95.8% (about 30.4 points above the national owner-occupancy rate (65.4%)).

FEMA’s National Risk Index rates natural-hazard risk for Columbia city, SD as Relatively Low (composite score 73.5), which is elevated versus much of the country. The strongest component scores on US5 are wildfire (77.1) and flood (63.1). 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 Columbia city, SD show little to no average snow and around 22.5 inches of annual precipitation.

IRS migration statistics show a net inflow of about 24 for ZIP 57433 (Columbia 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.