ZIP Code 57720 — Buffalo town, SD Demographics & Data

ZIP code 57720 covers Buffalo, SD in Harding County with a population of about 561.

At a glance, the area shows median age of 53.0 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 57720 is about $78,333 — about 4% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 8.4%; unemployment rate near 1.9%; 29.0% of adults with a bachelor’s degree or higher (about 4.7 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Agriculture, Retail trade, and Construction; about 24.0% of workers reporting work-from-home (about 8.8 points above the U.S. share (15.2%)); a mean commute of about 180.0 minutes (U.S. average near 26.8).

Median home value is about $128,800 — about 63% below the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $369 (about 68% below the U.S. median rent ($1,163)), and owner-occupancy near 80.7% (about 15.3 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 57720 in Buffalo, SD, a household would need roughly $35,000 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 $827. That sits below the local median household income ($78,333), suggesting the typical household income is closer to a workable buy-in level under these assumptions. 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 Buffalo town, SD as Very Low (composite score 1.5), which is relatively lower than many U.S. communities. The strongest component scores on US5 are wildfire (82.6) and flood (3.5). 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 Buffalo town, SD show little to no average snow and around 13.4 inches of annual precipitation.

IRS migration statistics show a net inflow of about 34 for ZIP 57720 (Buffalo town, 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.