Attic Insulation in Duplin County, NC

Duplin County and Its Homes

Duplin County grew 6 percent from 2020 to 2025, to 51,571 people by the Census Bureau's estimate, in about 23,900 housing units.

Its ten incorporated towns each have a page here: Wallace, Warsaw, Rose Hill, Beulaville, Magnolia, Faison, Kenansville, Greenevers, Teachey and Calypso. About 30 percent of Duplin County's housing units are inside town limits, the rest in unincorporated areas.

A tan-brick courthouse with tall white columns, the sun behind its cupola, in Kenansville — The Duplin County Courthouse in Kenansville, the county seat Photo: Indy beetle, CC0, via Wikimedia Commons

Duplin County at a Glance

Population: 51,571 (2025), 48,660 (2020)
Housing units: about 23,900
Median year built: 1986 (North Carolina: 1991)
Built before 1980: 41% (statewide: 34%)
Detached houses: 60%
Mobile homes: 31%
Owner-occupied: 70%
Heated with electricity: 77% (statewide: 65%)
Climate zone: 3 on both maps
Towns with pages here: 10

Census Bureau estimates for Duplin County (housing: 2020 to 2024).

Towns and Communities in Duplin County

Wallace
3,570 people · Duke Energy Progress
Warsaw
2,853 people · median home 1982 · Duke Energy Progress
Rose Hill
1,429 people · median home 1968 · power varies by address
Beulaville
1,176 people · median home 1987 · Duke Energy Progress
Magnolia
875 people · power varies by address
Faison
824 people · median home 1975 · Duke Energy Progress
Kenansville
814 people · median home 1978 · Duke Energy Progress
Greenevers
603 people · median home 1987 · power varies by address
Teachey
500 people · Duke Energy Progress
Calypso
340 people · Duke Energy Progress

Unincorporated communities the Census Bureau maps in Duplin County: Potters Hill, Chinquapin and Bowdens.

What We Do in Duplin County

Attic Insulation in Duplin County
Some 41 percent of Duplin County housing units predate 1980; joists showing above their insulation mean more blown-in fiberglass is due, R-49 from bare.
Attic Insulation Removal in Duplin County
Wet, moldy or animal-soiled insulation comes out of Duplin County attics, and a mouse-soiled Duplin County attic is sanitized and deodorized; in the 18 percent of homes built before 1960, vermiculite is ruled out first.
Air Sealing in Duplin County
Some 77 percent of Duplin County homes heat with electricity, often through attic ducts; their joints and the ceiling's gaps are sealed first.

Homes in Duplin County

Half of Duplin County's 23,900 housing units were built before 1986: 27 percent before 1970, 41 percent before 1980 (nearly all before the state's 1978 insulation rule) and 10 percent in 2010 or later. The largest share went up in the 1990s, under codes that asked for less than ENERGY STAR now suggests; ENERGY STAR notes insulation is often thinnest at the eaves. Among Duplin County towns, the median home is oldest in Rose Hill (1968) and newest in Greenevers (1987).

Duplin County by type: 60 percent detached houses, 8 percent in buildings of two or more homes and 31 percent mobile homes (11 percent statewide). In Duplin County, 77 percent of homes heat with electricity, 3 percent with piped gas and 18 percent with tank gas (6 percent statewide).

Duplin County Homes by Year Built

Before 1940: about 1,510 units, 6% (±1)
1940s: about 830 units, 3% (±1)
1950s: about 1,860 units, 8% (±1)
1960s: about 2,230 units, 9% (±2)
1970s: about 3,400 units, 14% (±2)
1980s: about 3,360 units, 14% (±2)
1990s: about 4,440 units, 19% (±2)
2000s: about 3,900 units, 16% (±2)
2010s: about 1,870 units, 8% (±1)
2020 or later: about 460 units, 2% (±1)

Climate Across Duplin County

NOAA 1991 to 2020 normals for Duplin County towns, by station: Wallace 1 SE station (Wallace, Rose Hill, Greenevers and Teachey): about 2,900 heating and 1,850 cooling degree days; Warsaw 5 E station (Warsaw, Beulaville, Magnolia and Kenansville): about 3,490 heating and 1,420 cooling degree days; Clinton 2 NE station (Faison): about 3,020 heating and 1,780 cooling degree days; Mount Olive 6 SE station (Calypso): about 3,120 heating and 1,720 cooling degree days.

Power and Gas in Duplin County

The card lists Duplin County's town utilities by the territory maps; a power bill confirms the one at an address.

Piedmont Natural Gas holds the Duplin County gas franchise (NC Utilities Commission map), and 3 percent of Duplin County homes heat with piped gas.

Who Supplies Power in Duplin County

Duke Energy Progress: Wallace, Warsaw, Beulaville, Faison, Kenansville, Teachey and Calypso; parts of Rose Hill, Magnolia and Greenevers
Four County EMC: parts of Rose Hill, Magnolia and Greenevers
Tri-County EMC: homes near Warsaw, Beulaville, Faison, Kenansville and Calypso

Energy Programs for Duplin County Homes

Check each program's current terms for a Duplin County home; some pay only through the utility's contractor network. Insulation Pros is an approved Duke Energy trade ally for Duke's rebate.

Programs for Duplin County

Smart $aver Insulate and Seal (Duke Energy rebate; Wallace, Warsaw, Beulaville, Faison and more).
Home Energy House Call (Duke Energy home assessment; Wallace, Warsaw, Beulaville, Faison and more).
Home Energy Audit (Four County EMC; Rose Hill, Magnolia and Greenevers): home energy audits for members.
Income-qualified Weatherization (Duke Energy income-qualified; Wallace, Warsaw, Beulaville, Faison and more).
Energy Saver North Carolina (statewide income-qualified; any Duplin County address).
Weatherization Assistance Program (statewide income-qualified; any Duplin County address).
Piedmont Natural Gas lists rebates for high-efficiency gas furnaces, and none for insulation or air sealing (program page).

Get Your Free Estimate

or call (336) 870-3893

Duplin County Insulation FAQs

Do you serve all of Duplin County?

Yes: Wallace, Warsaw, Rose Hill, Beulaville, Magnolia, Faison, Kenansville, Greenevers and two more towns, and every unincorporated Duplin County address.

Which utilities offer insulation rebates in Duplin County?

Duke Energy's Smart $aver Insulate and Seal (Wallace, Warsaw, Beulaville, Faison and more).

Does attic insulation in Duplin County need a permit?

Ask Duplin County Building Inspections before work starts. For an address in Wallace, Warsaw, Rose Hill or another Duplin County town, the town or city hall can tell you whether Duplin County's office handles its permits.