Chatham County and Its Homes
Chatham County grew 11 percent from 2020 to 2025, to 85,111 people by the Census Bureau's estimate, in about 35,900 housing units.
Its three incorporated towns each have a page here: Siler City, Pittsboro and Goldston. About 20 percent of Chatham County's housing units are inside town limits, the rest in unincorporated areas.
Chatham County at a Glance
- Population: 85,111 (2025), 76,663 (2020)
- Housing units: about 35,900
- Median year built: 1998 (North Carolina: 1991)
- Built before 1980: 24% (statewide: 34%)
- Detached houses: 77%
- Mobile homes: 12%
- Owner-occupied: 81%
- Heated with electricity: 50% (statewide: 65%)
- Climate zone: 3 (2021 map), 4 (state code)
- Towns with pages here: 3
Census Bureau estimates for Chatham County (housing: 2020 to 2024).
Towns and Communities in Chatham County
Siler City
8,155 people · Duke Energy
Pittsboro
5,054 people · median home 2002 · Duke Energy
Goldston
268 people · median home 1963 · Duke Energy
Cary
Wake County town · about 4,100 residents in Chatham County
Unincorporated communities the Census Bureau maps in Chatham County: Briar Chapel (about 2,200 housing units, median year built 2014), Fearrington Village (about 1,400 housing units, median year built 1994), Governors Club (about 820 housing units, median year built 2004), Governors Village (median year built 2003), Moncure (median year built 1993), Carolina Meadows (median year built 1992), Bennett and Gulf.
What We Do in Chatham County
Attic Insulation in Chatham County
Some 24 percent of Chatham 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 Chatham County
Wet, moldy or animal-soiled insulation comes out of Chatham County attics, and a mouse-soiled Chatham County attic is sanitized and deodorized; in the 11 percent of homes built before 1960, vermiculite is ruled out first.
Air Sealing in Chatham County
Some 50 percent of Chatham County homes heat with electricity, often through attic ducts; their joints and the ceiling's gaps are sealed first.
Homes in Chatham County
Half of Chatham County's 35,900 housing units were built before 1998: 16 percent before 1970, 24 percent before 1980 (nearly all before the state's 1978 insulation rule) and 25 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 Chatham County towns, the median home is oldest in Goldston (1963) and newest in Pittsboro (2002).
Chatham County by type: 77 percent detached houses, 7 percent in buildings of two or more homes and 12 percent mobile homes. In Chatham County, 50 percent of homes heat with electricity, 32 percent with piped gas and 14 percent with tank gas (6 percent statewide).
Chatham County Homes by Year Built
- Before 1940: about 1,540 units, 4% (±1)
- 1940s: about 780 units, 2% (±1)
- 1950s: about 1,810 units, 5% (±1)
- 1960s: about 1,740 units, 5% (±1)
- 1970s: about 2,630 units, 7% (±1)
- 1980s: about 3,840 units, 11% (±1)
- 1990s: about 7,300 units, 20% (±2)
- 2000s: about 7,150 units, 20% (±2)
- 2010s: about 7,030 units, 20% (±2)
- 2020 or later: about 2,090 units, 6% (±1)
Climate Across Chatham County
NOAA 1991 to 2020 normals for Chatham County towns, by station: Siler City 2 N station (Siler City): about 3,500 heating and 1,500 cooling degree days; Chapel Hill 2 W station (Pittsboro): about 3,500 heating and 1,610 cooling degree days; Sanford 8 NE station (Goldston): about 3,180 heating and 1,670 cooling degree days.
Power and Gas in Chatham County
The card lists Chatham County's town and countryside utilities by the territory maps; a power bill confirms the one at an address. The territory map does not split Duke Energy's two North Carolina companies in Chatham County; their programs are the same, and the power bill names the one at an address.
Enbridge Gas North Carolina holds the Chatham County gas franchise (NC Utilities Commission map), and 32 percent of Chatham County homes heat with piped gas.
Who Supplies Power in Chatham County
- Duke Energy: Siler City, Pittsboro and Goldston
- Central Electric: homes near Goldston
- Randolph EMC: other parts of Chatham County
Energy Programs for Chatham County Homes
Check each program's current terms for a Chatham 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 Chatham County
- Smart $aver Insulate and Seal (Duke Energy rebate; Siler City, Pittsboro and Goldston).
- Home Energy House Call (Duke Energy home assessment; Siler City, Pittsboro and Goldston).
- Residential energy audits (Central Electric; near Goldston): home energy audits for members.
- Home energy analysis (Randolph EMC; parts of Chatham County): a free home energy analysis for members.
- Income-qualified Weatherization (Duke Energy income-qualified; Siler City, Pittsboro and Goldston).
- ThermWise Weatherization Assistance (Enbridge Gas; Chatham County gas customers): no-cost weatherization for gas customers, income-qualified.
- Energy Saver North Carolina (statewide income-qualified; any Chatham County address).
- Weatherization Assistance Program (statewide income-qualified; any Chatham County address).
Chatham County Insulation FAQs
Do you serve all of Chatham County?
Yes: Siler City, Pittsboro and Goldston, the parts of Cary inside Chatham County, and every unincorporated Chatham County address.
Which utilities offer insulation rebates in Chatham County?
Duke Energy's Smart $aver Insulate and Seal (Siler City, Pittsboro and Goldston).
Does attic insulation in Chatham County need a permit?
Ask Chatham County Building Inspections before work starts. For an address in Siler City, Pittsboro or Goldston, the town or city hall can tell you whether Chatham County's office handles its permits.
Counties Near Chatham County
Lee County · Alamance County · Orange County · Moore County · Durham County · All service areas
Sources
Census Bureau figures for Chatham County, Census Bureau place list, NOAA normals for the Siler City 2 N station, NOAA normals for the Chapel Hill 2 W station, NOAA normals for the Sanford 8 NE station, NC Utilities Commission natural gas map (October 2026). How the town and county pages are made.
Chatham County, NC
Open in Google Maps (opens in a new tab)Insulation Pros in Chatham County
An insulation contractor serving North Carolina, Chatham County included.
Send the square footage of your Chatham County attic, or call (336) 870-3893.