Hyde County, SD Insulation Payback
Hyde County attic insulation, by the numbers
Hyde County sits in IECC climate zone 6 (Cold) — winters that dominate the energy bill, with cooling a minor factor. For a currently uninsulated attic, DOE and ENERGY STAR recommend building up to R-60. Going from R-2 to the recommended R-60 costs roughly $3,480 installed for a typical attic (about 1,000 sq ft), and pays for itself in about 1.6 years at an estimated $2,164/year saved. Topping up the attic pays for itself fast here.
Where the savings come from
Split it out and it's roughly $2,048 a year on the heating side, $115 on cooling. By estimated insulation savings, Hyde County lands in the 89th percentile nationally. Zone 6 alone covers 459 counties in this dataset, and Hyde County comes in 225th by savings. South Dakota averages $2,162/year across the counties tracked here; Hyde County comes in 0% higher.
The climate data behind this
Hyde County's climate figures — 7,661 heating and 718 cooling degree days a year — are read from HIGHMORE 1 W, SD US, 1.4 miles away, NOAA's nearest 1991-2020 normals station. That combined heating-and-cooling load ranks Hyde County 327th nationally by total degree days — the 90th percentile. One local detail the R-value alone won't tell you: Hyde County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
Already have some insulation?
A shallower starting point changes the math: with R-11 already down, only the gap to R-49 needs filling, at roughly $2,280 for an estimated $316/year saved (~7.2-year payback). Worth doing on the numbers alone.
Getting it done in Hyde County
Actual quotes will vary by attic access, existing debris, and whether the job needs air sealing first. Treat the $3,480 figure above as a planning number for Hyde County, not a bid - contractors typically charge a $600 minimum regardless of job size.
Where these figures come from
Hyde County's R-60 target and its degree-day figures both come from named federal sources - see the methodology guide for exactly which ones. The guide to what R-value actually means explains why R-60 is the target here specifically.