Pennsylvania · 11 covered places · 19 ZIP codes
Plumbers in Lehigh County, PA
We cover 11 cities and towns in Lehigh County, Pennsylvania, across 19 ZIP codes, including Allentown, Whitehall, Macungie. About 311,000 people live in those ZIP codes. 42% of the homes were built before 1960, so galvanized pipe and old cast iron drains are common.
| Year built | Share of homes |
|---|---|
| Before 1940 | 24% |
| 1940–1959 | 18% |
| 1960–1979 | 23% |
| 1980–1999 | 18% |
| 2000 or later | 17% |
Share of housing units in the covered ZIP codes. Census ACS 2023 5-year estimates.
| Place | Residents in covered ZIPs | Built before 1960 |
|---|---|---|
| Allentown | 176,993 | 52% |
| Whitehall | 29,271 | 36% |
| Macungie | 26,633 | 13% |
| Emmaus | 18,693 | 46% |
| Coopersburg | 14,625 | 31% |
| Breinigsville | 12,031 | 16% |
| Slatington | 11,489 | 44% |
| Center Valley | 9,501 | 15% |
| New Tripoli | 5,837 | 24% |
| Alburtis | 5,624 | 27% |
What goes wrong in Lehigh County homes
Pre-1960 homes: galvanized pipe and cast iron
42% of homes in Lehigh County's covered ZIP codes were built before 1960, 24% of them before 1940. Houses that old often still have galvanized steel supply lines that rust closed from the inside, and cast iron or clay sewer pipe that cracks and lets roots in. Weak pressure at upstairs fixtures, brown water after a shutoff and slow drains are the usual clues. Typical fixes are whole-house repiping and a sewer camera inspection.
Oil-heated homes
18% of occupied homes here heat with fuel oil, far above the national norm. Many of them make hot water with a tankless coil inside the boiler, which runs the boiler all summer. Plumbers often replace the coil with an indirect tank or a standalone water heater when the boiler is serviced or replaced.
Long, hard winters
65% of homes here were built before 1980, when pipes were more often run through exterior walls and uninsulated crawl spaces. In a long Pennsylvania winter those are the lines that freeze and split. See frozen and burst pipe repair.
Common plumbing work in Lehigh County
City pages in Lehigh County
Other covered towns in Lehigh County
- Alburtis (1 ZIP)
- Breinigsville (1 ZIP)
- Center Valley (1 ZIP)
- Coopersburg (1 ZIP)
- Emmaus (1 ZIP)
- Lehigh Valley (3 ZIPs)
- Macungie (1 ZIP)
- New Tripoli (1 ZIP)
- Slatington (1 ZIP)
- Whitehall (1 ZIP)
Lehigh County plumbing FAQ
Which towns in Lehigh County do you cover?
11 places: Alburtis, Allentown, Breinigsville, Center Valley, Coopersburg, Emmaus, Lehigh Valley, Macungie, New Tripoli, Slatington, Whitehall. Enter your ZIP code to confirm coverage for your street.
How old are homes in Lehigh County?
Across the covered ZIP codes, Census estimates put 42% of homes as built before 1960, 23% from 1960 to 1979, 18% from 1980 to 1999 and 17% in 2000 or later.
Who licenses plumbers in Lehigh County, PA?
Pennsylvania has no statewide plumbing license; Philadelphia, Allegheny County and other municipalities license plumbers, and home improvement contractors register with the Attorney General.
Housing and heating figures are US Census Bureau ACS 2023 5-year estimates for the ZIP code areas we cover in Lehigh County, combined across places and weighted by housing units. Some ZIP codes extend into neighboring counties.
Need a plumber in Lehigh County?
Same-day service when a plumber is available. One call connects you with a licensed plumber who serves your ZIP.