Illinois · 8 covered places · 8 ZIP codes
Plumbers in DeKalb County, IL
We cover 8 cities and towns in DeKalb County, Illinois, across 8 ZIP codes, including Dekalb, Sycamore, Sandwich. About 97,000 people live in those ZIP codes. Most homes date from 1960 to 1979, old enough that original water heaters, valves and drains are wearing out.
| Year built | Share of homes |
|---|---|
| Before 1940 | 14% |
| 1940–1959 | 10% |
| 1960–1979 | 27% |
| 1980–1999 | 23% |
| 2000 or later | 26% |
Share of housing units in the covered ZIP codes. Census ACS 2023 5-year estimates.
| Place | Residents in covered ZIPs | Built before 1960 |
|---|---|---|
| Dekalb | 42,461 | 22% |
| Sycamore | 21,709 | 22% |
| Sandwich | 11,233 | 23% |
| Genoa | 7,486 | 29% |
| Cortland | 4,611 | 11% |
| Maple Park | 4,295 | 27% |
| Hinckley | 2,966 | 42% |
| Kirkland | 2,241 | 38% |
What goes wrong in DeKalb County homes
Natural gas in most homes
72% of occupied homes here heat with utility gas, so gas water heaters, ranges and dryers are common. That means gas line extensions for new appliances, flexible connector replacements and venting checks when a water heater is swapped. If you smell gas, leave first and call the gas utility from outside. See gas line repair.
Long, hard winters
51% of homes here were built before 1980, when pipes were more often run through exterior walls and uninsulated crawl spaces. In a long Illinois winter those are the lines that freeze and split. See frozen and burst pipe repair.
Hard water
Illinois water is generally hard. With 72% of homes here on gas, scale settles as sediment in gas water heater tanks, which then rumble and wear out early. See water softener installation.
Common plumbing work in DeKalb County
Other covered towns in DeKalb County
- Cortland (1 ZIP)
- Dekalb (1 ZIP)
- Genoa (1 ZIP)
- Hinckley (1 ZIP)
- Kirkland (1 ZIP)
- Maple Park (1 ZIP)
- Sandwich (1 ZIP)
- Sycamore (1 ZIP)
DeKalb County plumbing FAQ
Which towns in DeKalb County do you cover?
8 places: Cortland, Dekalb, Genoa, Hinckley, Kirkland, Maple Park, Sandwich, Sycamore. Enter your ZIP code to confirm coverage for your street.
How old are homes in DeKalb County?
Across the covered ZIP codes, Census estimates put 23% of homes as built before 1960, 27% from 1960 to 1979, 23% from 1980 to 1999 and 26% in 2000 or later.
Who licenses plumbers in DeKalb County, IL?
The Illinois Department of Public Health licenses plumbers and plumbing contractors must register; Chicago adds its own requirements.
Housing and heating figures are US Census Bureau ACS 2023 5-year estimates for the ZIP code areas we cover in DeKalb County, combined across places and weighted by housing units. Some ZIP codes extend into neighboring counties.
Need a plumber in DeKalb County?
Same-day service when a plumber is available. One call connects you with a licensed plumber who serves your ZIP.