Faison, NC
3 miles southwest
824 people, about twice Calypso's population
Attic insulation in FaisonAttic Insulation in Calypso, NC
Blown-in attic insulation for Calypso, NC, 3 miles from Faison, plus removal and air sealing.
About Calypso and Its Homes
Calypso, named for the sea nymph of Homer's Odyssey, was settled about 1890 and incorporated in 1913. The county's 1994 study found two mail-order houses here, both shipped in by rail car: a Sears house of about 1914 and a ready-made Aladdin bungalow of about 1920.
Calypso, in Duplin County, grew from 323 people in 2020 to 340 in 2025 (Census Bureau estimates), on 1 square mile.
Calypso has about 200 housing units, 1 percent of Duplin County's.
Calypso at a Glance
- County: Duplin County
- Population: 340 (2025), 323 (2020), up 5.3%
- Land area: 1 square mile (340 people each)
- Housing units: about 200 (±86)
- Mobile homes: 18% (±12)
- Climate zone: 3 on both maps
- ENERGY STAR target for Calypso attics: R-49 from bare, R-38 over 3 to 4 inches (R-value guide)
Census Bureau estimates for Calypso, 2020 to 2024 (± margin of error).
Attic Insulation in Calypso
If the joists show above the insulation in a Calypso attic, ENERGY STAR says to add more insulation.
The Local Climate
Calypso's center sits about 160 feet above sea level, 7 miles from NOAA's Mount Olive 6 SE station, the best match for Calypso. The station's 1991 to 2020 normals average about 3,120 heating and 1,720 cooling degree days a year, so at Calypso's station, heating needs outweigh cooling.
NOAA estimated part of the Mount Olive 6 SE station's normals from nearby stations, so treat them as approximate.
Homes by Age: What It Means for the Attic
With about 200 housing units in Calypso, read the figures as rough proportions.
Built before 1940, about 15 percent of Calypso homes can hide knob-and-tube wiring and vermiculite, jobs for an electrician and an asbestos contractor first. Built from 1970 to 1989, about 15 percent of Calypso homes may hold settled fiberglass; check its depth against the joists.
Homes by Year Built
- Before 1940: 17% (±8), about 35 units
- 1950s: 18% (±14), about 35 units
- 1960s: under 8%
- 1970s: 8% (±6), about 15 units
- 1980s: 6% (±5), about 10 units
- 1990s: under 24%, about 25 units
- 2000s: under 15%, about 15 units
- 2010s: under 9%
- 2020 or later: under 7%
Air Sealing and Duct Sealing in Calypso
In Mount Olive, the nearest town to Calypso with solid figures, 75 percent of homes heat with electricity.
Air sealing comes first, as the EPA advises: wire and pipe holes, wall tops and soffits.
How Homes Here Are Heated
- Bottled or tank gas: 18% (±15), about 35 households
- Wood: under 3%
Power, Gas and Rebates
Duke Energy Progress serves most of Calypso, Tri-County EMC its edges; your bill says which. For gas, Calypso is in the Duplin County franchise of Piedmont Natural Gas, whose mains may not reach every street in Calypso.
Rebate to check in Calypso: Smart $aver Insulate and Seal (Duke Energy; Insulation Pros is an approved trade ally). Before a job in Calypso, check its current terms; the Duplin County page lists every program.
Attic Insulation Removal in Calypso
In a Calypso attic, only wet, moldy or animal-soiled insulation is vacuumed out (ENERGY STAR's test), once the cause is fixed, and after mice that Calypso attic is sanitized and deodorized; dry, clean insulation stays.
Also Serving Near Calypso
Nearest to Calypso first.
Mount Olive, NC
4 miles northeast
4,521 people, about 13 times Calypso's population
Attic insulation in Mount OliveWarsaw, NC
11 miles south
Its NOAA station logs about 370 more heating degree days than Calypso's; 2,853 people, about 8 times Calypso's population
Attic insulation in WarsawSeven Springs, NC
15 miles east
Its NOAA station logs about 460 fewer heating degree days than Calypso's; 59 people, about a sixth of Calypso's population
Attic insulation in Seven Springs
Calypso Insulation FAQs
Why do the edges of the attic in my Calypso bungalow have so little insulation?
Likely because the roof is low where it meets the walls. The Aladdin bungalow the county study recorded in Calypso has a low gabled roof with its rafter tails showing under the eaves. Near those eaves the roof sits close to the ceiling joists, and ENERGY STAR notes that insulation can run thin along that strip even when the middle has plenty. We set a baffle against the roof deck in each bay first. Then insulation can be blown out to the wall plate while outside air still gets in at the soffit.
Is a house in Calypso on any historic register?
Not in town, by the state's list. The one National Register listing that names Calypso, a farm, is outside town limits. The 1994 county study did add the mail-order bungalow, a brick store block and the brick Methodist church to a state study list. That list is a separate thing from the Register. Duplin's single local commission, per the state's 2023 directory, is Warsaw's. So nothing on that front shapes attic work here.
Does attic insulation in Calypso need a permit?
Calypso Town Hall can say whether Duplin County Building Inspections, the town itself or another office handles permits in Calypso; ask before work starts.
Helpful Guides
- Power from Duke Energy Progress: high summer electric bills and home energy audits
Sources
Census Bureau figures for Calypso, NOAA normals for the Mount Olive 6 SE station, Duke Energy Progress (October 2026). Compiled by Insulation Pros. How the town pages are made.
Sources for the Calypso introduction and questions (read October 20, 2026):
- Calypso, in The North Carolina Gazetteer (William S. Powell, 2nd ed., UNC Press 2010), NCpedia
- Historic and Architectural Resources of Duplin County, NC, ca. 1790-1943, National Register multiple property documentation form, 1994 (NC HPO)
- Adding Attic Insulation, ENERGY STAR do-it-yourself guide
- About Attic Ventilation, ENERGY STAR do-it-yourself guide
- NC Listings in the National Register of Historic Places, NC State Historic Preservation Office
- Historic Preservation Commission Staff in North Carolina, listed by county, as of 2/20/2023 (NC HPO)
Calypso, NC
Open in Google Maps (opens in a new tab)Serving Calypso, NC
Insulation Pros is an insulation contractor serving North Carolina, Calypso and the rest of Duplin County included.
Reach us
Send the square footage of your Calypso attic, or call (336) 870-3893.