Plumbing repair · Federal Way, Washington
Plumbing repair in Federal Way, WA
Leak, backed-up drain, no hot water, or a frozen line? The largest share of Federal Way's homes (24%) was built 1980 to 1989[1]. Request a licensed plumber who works here. Federal Way, in King County — ZIPs 98003, 98023, counts 99,729 residents (2025 estimate)[2].
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Federal Way plumbing snapshot: the key figures
- Population (2025 est.)
- 99,729[2]-1.3% since 2020
- County
- King[2]
- Land area
- 22.3 sq mi[3]
- Decade the most homes date from
- 1980 to 1989[1]24% of housing units
- Homes built before 1980
- 40%[1]the 7th-highest share of the 15 Seattle-area suburbs we cover
- Homes built 1980–1999
- 41%[1]2020–2024
- Homes built 2010 or later
- 9%[1]the 3rd-lowest share of the 15 Seattle-area suburbs we cover
- Flood & flash-flood reports within 10 mi
- 1[4]0 flash floods, 2016–2025; flood-prone homes need working drainage and backflow prevention
- FEMA flood-insurance claims, local ZIPs
- 23[5]10 in the last 10 years; 16 paid
- Homes on utility gas heat
- 39%[1]gas piping work usually needs a permit and a licensed installer
Reading the Federal Way data for plumbing
Federal Way counts 99,729 residents (2025 estimate), growing at a middle-of-the-pack -1.3% since 2020[2]. On the map that's 22.3 square miles holding 4,469 residents per square mile, the 6th densest of the suburbs here; it sits entirely in King County, with ZIP codes 98003, 98023[3].
With 9% of homes built since 2010 and 40% before 1980[1], Federal Way's plumbing runs from brand-new supply lines and fixtures to aging pipe, original valves and water heaters past their rated life.
2 ZIP codes cover Federal Way — 98003 (46% of the city's land), 98023 (46% of the city's land)[6].
Nearest of the other suburbs we track: Auburn (6.0 mi E), Kent (7.9 mi NE) and Puyallup (9.4 mi S)[3].
40% of Federal Way's 37,479 housing units predate 1980 and 9% went up in 2010 or later[1] — the 7th-highest pre-1980 share of the 15 Seattle-area suburbs we cover; nearby, Auburn (33%), Kent (39%), and Puyallup (39%) predate 1980. The 41% built in 1980–1999 are at the age where original water heaters and valves get replaced.
The biggest single slice — 24% — was built 1980 to 1989, and the median home dates to 1984[1]. Neighbours from the same era tend to hit the same plumbing problems at the same time.
Water from the sky is plumbing work too: 1 flood or flash-flood report within 10 miles over 2016–2025[4], and FEMA logged 23 flood-insurance claims across Federal Way's ZIPs[5]. Homes that take water need working drainage, sump pumps and backflow prevention.
39% of homes heat with utility gas, and 45% of households rent[1]. Tenants: report plumbing failures to the landlord in writing.
Among the 15 suburbs tracked here, Federal Way stands out for the 3rd-lowest share of homes built since 2010 (9%)[1].
plumbing help in Federal Way: what to do next
Plumbing repair contractors taking requests around Federal Way cover ZIP codes 98003, 98023.
Before reaching out: before the plumber arrives
Federal Way by the numbers
| Measure | Federal Way | Median of 15 | Difference |
|---|---|---|---|
| Built before 1960 | 5.3% | 10.8% | 5 pts lower |
| Built 2010 or later | 9% | 13% | 4 pts lower |
| Utility-gas heat | 39% | 40% | 1 pts lower |
| Built before 1980 | 40% | 39% | 1 pts higher |
| Median year built | 1984 | 1985 | 1 year older |
| Flood reports (10 mi) | 1 | 1 | same as median |
| Renter-occupied | 45% | 45% | same as median |
Sorted by largest difference. Each median is the middle value across the covered Seattle-area suburbs, from the same sources.
| City | Flood reports | NFIP claims |
|---|---|---|
| Federal Way | 1 | 23 |
| Auburn 6.0 mi | 0 | 49 |
| Kent 7.9 mi | 2 | 60 |
| Puyallup 9.4 mi | 0 | 169 |
| Renton 13.4 mi | 2 | 66 |
| Lakewood 13.6 mi | 0 | 46 |
| ZIP | Claims | Paid | Busiest year |
|---|---|---|---|
| 98003 | 10 | $47,593 | 1996 (2) |
| 98023 | 13 | $81,083 | 2013 (2) |
ZIPs extend past city limits.
| Date | Type | Distance |
|---|---|---|
| Dec 5, 2023 | Heavy Rain | 9.7 mi |
| Built | Units | Share | Margin of error |
|---|---|---|---|
| 2020 or later | 179 | 0.5% | ±104 |
| 2010 to 2019 | 3,174 | 8.5% | ±530 |
| 2000 to 2009 | 3,581 | 9.6% | ±526 |
| 1990 to 1999 | 6,512 | 17.4% | ±692 |
| 1980 to 1989 | 9,006 | 24.0% | ±760 |
| 1970 to 1979 | 7,627 | 20.4% | ±713 |
| 1960 to 1969 | 5,418 | 14.5% | ±456 |
| 1950 to 1959 | 1,235 | 3.3% | ±319 |
| 1940 to 1949 | 208 | 0.6% | ±81 |
| 1939 or earlier | 539 | 1.4% | ±213 |
ACS 2020–2024 estimates; margins of error are the Census Bureau's 90% intervals.
| Measure | Value |
|---|---|
| Housing units | 37,479 |
| Detached single-family | 18,430 (49%) |
| Occupied homes | 35,717 |
| Owner-occupied | 19,757 (55%) |
| Renter-occupied | 15,960 (45%) |
| Median home value | $552,800 |
ACS 2020–2024 estimates.
| Main heating fuel | Homes | Share | Margin of error |
|---|---|---|---|
| Electricity | 20,781 | 58.2% | ±1,040 |
| Utility gas | 13,899 | 38.9% | ±688 |
| Bottled or tank gas (propane, butane, etc.) | 274 | 0.8% | ±174 |
| Wood | 222 | 0.6% | ±107 |
| Fuel oil, kerosene, etc. | 218 | 0.6% | ±85 |
| No fuel used | 180 | 0.5% | ±81 |
| Other fuel | 132 | 0.4% | ±102 |
| Solar energy | 11 | 0.0% | ±16 |
| ZIP (ZCTA) | Share of Federal Way's land | Share of the ZIP inside the city |
|---|---|---|
| 98003 | 46% | 89% |
| 98023 | 46% | 100% |
Common Federal Way plumbing questions
Are Federal Way homes likely to have old galvanized pipes?
Only an inspection can say, but age is the clue: 5% were built before 1960 and 40% before 1980[1].
Sources
- Census ACS 2020–2024 5-year (keyless bulk)
- Census population estimates, Vintage 2025
- Census Gazetteer 2025
- NOAA Storm Events Database
- OpenFEMA NFIP claims
- Census 2020 ZCTA–place file
Data pulled Sep 28, 2026. Full citations and method.