Jerauld County, SD Insulation Payback
Is attic insulation worth it in Jerauld County, SD?
Jerauld County, South Dakota is zone 6 under DOE's climate map (Cold), which means a real winter that drives most of the annual energy bill here. An uninsulated attic there should be built up to R-60. Topping up a typical 1,000-square-foot attic from bare joists (R-2) to R-60 runs an estimated $3,480, and saves about $2,192 a year in heating and cooling — a payback around 1.6 years. Few home upgrades pay back that quickly.
The breakdown behind the number
Heating accounts for about $2,081/year of that and cooling about $111/year — Jerauld County needs both. Nationally, Jerauld County ranks in the 90th percentile for insulation savings potential. Compared only against its own climate zone, Jerauld County places 193rd out of 459. Against South Dakota's own average of $2,162/year, Jerauld County runs 1% above that.
Where these numbers come from
The heating and cooling degree days behind this estimate — 7,784 HDD and 688 CDD (base 65°F, 1991-2020 normals) — come from WESSINGTON SPRINGS, SD US, the nearest NOAA station with published normals, 2.7 miles from Jerauld County's center. By total degree days, Jerauld County sits at the 91th percentile nationally. Its moisture regime is classified humid, which matters for whether the attic needs a vapor retarder as part of the job — worth asking a contractor about locally.
If the attic isn't bare
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 $320/year saved (~7.1-year payback). The math clears comfortably within a normal ownership horizon.
Next steps for a Jerauld County attic
Real bids depend on how easy the attic is to reach and whether old insulation needs removing first, so treat $3,480 as a starting estimate for a Jerauld County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Jerauld County's numbers, sourced
The methodology guide lists exactly which DOE and NOAA sources feed Jerauld County's numbers, and where the cost assumptions come from. See the DIY vs. contractor guide for whether a job this size is realistic to do yourself.