Plumbing repair · Dunwoody, Georgia
Plumbing repair in Dunwoody, GA
Leak, backed-up drain, no hot water, or a frozen line? The largest share of Dunwoody's homes (28%) was built 1970 to 1979[1]. Request a licensed plumber who works here. Dunwoody, in DeKalb County — ZIPs 30338, 30360, 30346, counts 51,792 residents (2025 estimate)[2].
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Dunwoody at a glance for plumbing
- Population (2025 est.)
- 51,792[2]+0.3% since 2020
- County
- DeKalb[2]
- Land area
- 13.0 sq mi[3]
- Decade the most homes date from
- 1970 to 1979[1]28% of housing units
- Homes built before 1980
- 44%[1]the highest share of the 15 Atlanta-area suburbs we cover
- Homes built 1980–1999
- 30%[1]2020–2024
- Homes built 2010 or later
- 7%[1]the lowest share of the 15 Atlanta-area suburbs we cover
- Flood & flash-flood reports within 10 mi
- 35[4]33 flash floods, 2016–2025; flood-prone homes need working drainage and backflow prevention
- FEMA flood-insurance claims, local ZIPs
- 100[5]15 in the last 10 years; 72 paid
- Homes on utility gas heat
- 57%[1]gas piping work usually needs a permit and a licensed installer
What Dunwoody's numbers say about plumbing
Dunwoody is one of the most established suburbs tracked here — 51,792 people (2025 estimate), up just 0.3% since 2020[2]. It covers 13.0 square miles (3,986 residents per square mile, the 1st densest), sits entirely in DeKalb County, in ZIP codes 30338, 30360, 30346[3].
With 7% of homes built since 2010 and 44% before 1980[1], Dunwoody's plumbing runs from brand-new supply lines and fixtures to aging pipe, original valves and water heaters past their rated life.
Dunwoody is split across 3 ZIP codes: 30338 (74% of the city's land), 30360 (17% of the city's land), 30346 (8% of the city's land)[6].
The closest tracked neighbours are Sandy Springs (3.3 mi W), Roswell (7.1 mi N) and Johns Creek (8.9 mi NE)[3].
44% of Dunwoody's 23,491 housing units predate 1980 and 7% went up in 2010 or later[1] — the highest pre-1980 share of the 15 Atlanta-area suburbs we cover; nearby, Sandy Springs (29%), Roswell (22%), and Johns Creek (4%) predate 1980. Houses that old can still have galvanized supply pipe or cast-iron drains — especially the 3% built before 1960.
The biggest single slice — 28% — was built 1970 to 1979, 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: 35 flood or flash-flood reports within 10 miles over 2016–2025[4], and FEMA logged 100 flood-insurance claims across Dunwoody's ZIPs[5]. Homes that take water need working drainage, sump pumps and backflow prevention.
57% of homes heat with utility gas, and 44% of households rent[1]. Tenants: report plumbing failures to the landlord in writing.
Out of the 15 suburbs on this site, Dunwoody has the highest pre-1980 housing share (44%)[1], the oldest housing (by median year built) (1984)[1], the lowest share of homes built since 2010 (7%)[1], and the most flood reports nearby (35, tied with Sandy Springs)[4].
Dunwoody storm calendar
Within 10 miles of Dunwoody, 2016–2025: 33 flash-flood reports and 2 flood or heavy-rain reports[4]. Peak: spread out; June, July, and August held 57%. Busiest year 2017 (9); 4 of 10 years had none. Busiest month June 2017 (5). Latest: flash-flood report, Aug 29, 2023, 3.5 mi out.
| Month | Flash flood | Flood & heavy rain | All |
|---|---|---|---|
| Jan | 4 | – | 4 |
| Feb | 4 | – | 4 |
| Apr | 2 | – | 2 |
| Jun | 3 | 2 | 5 |
| Jul | 5 | – | 5 |
| Aug | 10 | – | 10 |
| Sep | 3 | – | 3 |
| Nov | 1 | – | 1 |
| Dec | 1 | – | 1 |
Get plumbing help in Dunwoody
Requests go to Plumbing repair contractors serving the Dunwoody area — ZIP codes 30338, 30360, 30346.
Before you pick up the phone: before the plumber arrives
The data underneath this Dunwoody page
| Measure | Dunwoody | Median of 15 | Difference |
|---|---|---|---|
| Flood reports (10 mi) | 35 | 15 | 20 more |
| Built before 1980 | 44% | 21% | 23 pts higher |
| Built 2010 or later | 7% | 14% | 7 pts lower |
| Renter-occupied | 44% | 41% | 3 pts higher |
| Utility-gas heat | 57% | 61% | 3 pts lower |
| Median year built | 1984 | 1994 | 10 years older |
| Built before 1960 | 2.6% | 2.6% | same as median |
Biggest gaps first. Medians are middle values across the Atlanta-area suburbs we cover, drawn from the same sources.
| City | Flood reports | NFIP claims |
|---|---|---|
| Dunwoody | 35 | 100 |
| Sandy Springs 3.3 mi | 35 | 1,429 |
| Roswell 7.1 mi | 21 | 161 |
| Johns Creek 8.9 mi | 16 | 81 |
| Alpharetta 9.2 mi | 18 | 97 |
| Duluth 10.2 mi | 15 | 94 |
| ZIP | Claims | Paid | Busiest year |
|---|---|---|---|
| 30338 | 77 | $1,053,263 | 2009 (27) |
| 30360 | 23 | $103,994 | 2009 (7) |
| 30346 | 0 | $0 | — |
ZIPs extend past city limits.
| Date | Type | Distance |
|---|---|---|
| Aug 29, 2023 | Flash Flood | 3.6 mi |
| Aug 29, 2023 | Flash Flood | 3.5 mi |
| Aug 28, 2023 | Flash Flood | 2.1 mi |
| Jul 21, 2023 | Flash Flood | 9.9 mi |
| Jul 21, 2023 | Flash Flood | 9.0 mi |
| Jan 4, 2023 | Flash Flood | 6.2 mi |
| Jan 4, 2023 | Flash Flood | 7.4 mi |
| Jan 4, 2023 | Flash Flood | 9.8 mi |
| Built | Units | Share | Margin of error |
|---|---|---|---|
| 2020 or later | 47 | 0.2% | ±40 |
| 2010 to 2019 | 1,505 | 6.4% | ±315 |
| 2000 to 2009 | 4,486 | 19.1% | ±475 |
| 1990 to 1999 | 3,896 | 16.6% | ±466 |
| 1980 to 1989 | 3,205 | 13.6% | ±589 |
| 1970 to 1979 | 6,548 | 27.9% | ±724 |
| 1960 to 1969 | 3,197 | 13.6% | ±378 |
| 1950 to 1959 | 445 | 1.9% | ±186 |
| 1940 to 1949 | 44 | 0.2% | ±62 |
| 1939 or earlier | 118 | 0.5% | ±95 |
ACS 2020–2024 estimates; margins of error are the Census Bureau's 90% intervals.
| Measure | Value |
|---|---|
| Housing units | 23,491 |
| Detached single-family | 10,402 (44%) |
| Occupied homes | 21,225 |
| Owner-occupied | 11,934 (56%) |
| Renter-occupied | 9,291 (44%) |
| Median home value | $602,900 |
ACS 2020–2024 estimates.
| Main heating fuel | Homes | Share | Margin of error |
|---|---|---|---|
| Utility gas | 12,161 | 57.3% | ±777 |
| Electricity | 8,790 | 41.4% | ±830 |
| Bottled or tank gas (propane, butane, etc.) | 207 | 1.0% | ±125 |
| No fuel used | 67 | 0.3% | ±60 |
| ZIP (ZCTA) | Share of Dunwoody's land | Share of the ZIP inside the city |
|---|---|---|
| 30338 | 74% | 98% |
| 30360 | 17% | 36% |
| 30346 | 8% | 100% |
Common Dunwoody plumbing questions
Are Dunwoody homes likely to have old galvanized pipes?
Only an inspection can say, but age is the clue: 3% were built before 1960 and 44% before 1980[1].
Which ZIP codes are covered in Dunwoody?
30338, 30360, and 30346[6], in DeKalb County. Nearby suburbs with their own pages: Sandy Springs (3.3 mi), Roswell (7.1 mi), and Johns Creek (8.9 mi)[3].
I rent in Dunwoody. Who arranges the repair?
44% of occupied Dunwoody homes are rented[1], the 5th-highest share of the 15 Atlanta-area suburbs we cover. Tell your landlord or property manager in writing first; your lease says who arranges repairs.
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.