Oconto County, WI Insulation Payback
Is attic insulation worth it in Oconto County, WI?
Oconto County, Wisconsin is zone 6 under DOE's climate map (Cold), which means cold enough that heating, not cooling, is what decides the bill. An uninsulated attic there should be built 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 1.5 years at an estimated $2,299/year saved. Few home upgrades pay back that quickly.
Where the savings come from
Heating accounts for about $2,250/year of that and cooling about $49/year — Oconto County needs both. Nationally, Oconto County ranks in the 93th percentile for insulation savings potential. Compared only against its own climate zone, Oconto County places 99th out of 459. Against Wisconsin's own average of $2,200/year, Oconto County runs 5% above that.
Where these numbers come from
The heating and cooling degree days behind this estimate — 8,415 HDD and 302 CDD (base 65°F, 1991-2020 normals) — come from SURING, WI US, the nearest NOAA station with published normals, 8.4 miles from Oconto County's center. By total degree days, Oconto County sits at the 93th 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.
The smaller top-up scenario
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 $335/year saved (~6.8-year payback). The math clears comfortably within a normal ownership horizon.
Next steps for a Oconto County attic
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 Oconto County, not a bid - contractors typically charge a $600 minimum regardless of job size.
Oconto County's numbers, sourced
The methodology guide lists exactly which DOE and NOAA sources feed Oconto 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.