New York · 31 covered places · 32 ZIP codes
Plumbers in Jefferson County, NY
We cover 31 cities and towns in Jefferson County, New York, across 32 ZIP codes, including Watertown, Carthage, Evans Mills. About 108,000 people live in those ZIP codes. 41% of the homes were built before 1960, so galvanized pipe and old cast iron drains are common.
| Year built | Share of homes |
|---|---|
| Before 1940 | 30% |
| 1940–1959 | 11% |
| 1960–1979 | 15% |
| 1980–1999 | 24% |
| 2000 or later | 20% |
Share of housing units in the covered ZIP codes. Census ACS 2023 5-year estimates.
| Place | Residents in covered ZIPs | Built before 1960 |
|---|---|---|
| Watertown | 51,382 | 45% |
| Carthage | 10,774 | 44% |
| Evans Mills | 5,280 | 18% |
| Adams | 5,106 | 47% |
| Clayton | 4,438 | 39% |
| Dexter | 3,866 | 34% |
| Theresa | 3,172 | 36% |
| La Fargeville | 2,945 | 29% |
| Black River | 2,940 | 30% |
| Adams Center | 2,397 | 31% |
What goes wrong in Jefferson County homes
Pre-1960 homes: galvanized pipe and cast iron
41% of homes in Jefferson County's covered ZIP codes were built before 1960, 30% 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
14% 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
56% of homes here were built before 1980, when pipes were more often run through exterior walls and uninsulated crawl spaces. In a long New York winter those are the lines that freeze and split. See frozen and burst pipe repair.
Propane service
19% of homes here use bottled or tank propane for heat, typical of areas beyond the gas mains. Propane water heaters, ranges and generators need correctly sized lines and fittings rated for LP. See gas appliance hookups.
Common plumbing work in Jefferson County
Other covered towns in Jefferson County
- Adams (1 ZIP)
- Adams Center (1 ZIP)
- Alexandria Bay (1 ZIP)
- Antwerp (1 ZIP)
- Belleville (1 ZIP)
- Black River (1 ZIP)
- Calcium (1 ZIP)
- Carthage (1 ZIP)
- Chaumont (1 ZIP)
- Clayton (1 ZIP)
- Deferiet (1 ZIP)
- Depauville (1 ZIP)
- Dexter (1 ZIP)
- Evans Mills (1 ZIP)
- Felts Mills (1 ZIP)
- Fishers Landing (1 ZIP)
- Fort Drum (1 ZIP)
- Great Bend (1 ZIP)
- La Fargeville (1 ZIP)
- Mannsville (1 ZIP)
- Natural Bridge (1 ZIP)
- Oxbow (1 ZIP)
- Pierrepont Manor (1 ZIP)
- Plessis (1 ZIP)
- Redwood (1 ZIP)
- Sackets Harbor (1 ZIP)
- Theresa (1 ZIP)
- Thousand Island Park (1 ZIP)
- Three Mile Bay (1 ZIP)
- Watertown (2 ZIPs)
- Wellesley Island (1 ZIP)
Jefferson County plumbing FAQ
Which towns in Jefferson County do you cover?
31 places: Adams, Adams Center, Alexandria Bay, Antwerp, Belleville, Black River, Calcium, Carthage, Chaumont, Clayton, Deferiet, Depauville, Dexter, Evans Mills, Felts Mills, Fishers Landing, Fort Drum, Great Bend, La Fargeville, Mannsville, Natural Bridge, Oxbow, Pierrepont Manor, Plessis, Redwood, Sackets Harbor, Theresa, Thousand Island Park, Three Mile Bay, Watertown, Wellesley Island. Enter your ZIP code to confirm coverage for your street.
How old are homes in Jefferson County?
Across the covered ZIP codes, Census estimates put 41% of homes as built before 1960, 15% from 1960 to 1979, 24% from 1980 to 1999 and 20% in 2000 or later.
Who licenses plumbers in Jefferson County, NY?
New York has no statewide plumbing license; New York City and other municipalities license plumbers locally.
Housing and heating figures are US Census Bureau ACS 2023 5-year estimates for the ZIP code areas we cover in Jefferson County, combined across places and weighted by housing units. Some ZIP codes extend into neighboring counties.
Need a plumber in Jefferson County?
Same-day service when a plumber is available. One call connects you with a licensed plumber who serves your ZIP.