Plumbing repair · Duluth, Georgia
Plumbing repair in Duluth, GA
Leak, backed-up drain, no hot water, or a frozen line? The largest share of Duluth's homes (33%) was built 1990 to 1999[1]. Request a licensed plumber who works here. Duluth, in Gwinnett County — ZIPs 30096, 30097, counts 33,815 residents (2025 estimate)[2].
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Duluth plumbing snapshot: the key figures
- Population (2025 est.)
- 33,815[2]+4.9% since 2020
- County
- Gwinnett[2]
- Land area
- 10.3 sq mi[3]
- Decade the most homes date from
- 1990 to 1999[1]33% of housing units
- Homes built before 1980
- 12%[1]the 6th-lowest share of the 15 Atlanta-area suburbs we cover
- Homes built 1980–1999
- 58%[1]2020–2024
- Homes built 2010 or later
- 14%[1]the 7th-highest share of the 15 Atlanta-area suburbs we cover
- Winter-storm & freeze days, gwinnett zone
- 10[4]2016–2025
- Flood & flash-flood reports within 10 mi
- 15[4]15 flash floods, 2016–2025; flood-prone homes need working drainage and backflow prevention
- FEMA flood-insurance claims, local ZIPs
- 94[5]31 in the last 10 years; 69 paid
- Homes on utility gas heat
- 64%[1]gas piping work usually needs a permit and a licensed installer
What Duluth's numbers say about plumbing
Duluth counts 33,815 residents (2025 estimate), growing at a middle-of-the-pack 4.9% since 2020[2]. It covers 10.3 square miles (3,281 residents per square mile, the 4th densest), sits entirely in Gwinnett County, in ZIP codes 30096, 30097[3].
With 14% of homes built since 2010 and 12% before 1980[1], Duluth'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 Duluth — 30096 (71% of the city's land), 30097 (26% of the city's land)[6].
The tracked suburbs closest by are Johns Creek (3.7 mi NW), Alpharetta (8.5 mi NW) and Lawrenceville (9.7 mi E)[3].
12% of Duluth's 13,841 housing units predate 1980 and 14% went up in 2010 or later[1] — the 6th-lowest pre-1980 share of the 15 Atlanta-area suburbs we cover; nearby, Johns Creek (4%), Alpharetta (8%), and Lawrenceville (30%) predate 1980. The 58% built in 1980–1999 are at the age where original water heaters and valves get replaced.
The biggest single slice — 33% — was built 1990 to 1999, and the median home dates to 1994[1]. Neighbours from the same era tend to hit the same plumbing problems at the same time.
Freeze risk: the gwinnett forecast zone logged 10 winter-storm, ice or hard-freeze days in 2016–2025, including February 2021; the latest was Jan 16, 2022[4].
Water from the sky is plumbing work too: 15 flood or flash-flood reports within 10 miles over 2016–2025[4], and FEMA logged 94 flood-insurance claims across Duluth's ZIPs[5]. Homes that take water need working drainage, sump pumps and backflow prevention.
64% of homes heat with utility gas, and 43% of households rent[1]. Tenants: report plumbing failures to the landlord in writing.
Duluth storm calendar
Within 10 miles of Duluth, 2016–2025: 15 flash-flood reports[4]. Peak: 67% in January, June, and August. Busiest year 2023 (6); 5 of 10 years had none. Busiest month August 2023 (4). Latest: flash-flood report, Aug 29, 2023, 8.7 mi out.
| Month | Flash flood | Flood & heavy rain | All |
|---|---|---|---|
| Jan | 2 | – | 2 |
| Apr | 1 | – | 1 |
| Jun | 3 | – | 3 |
| Jul | 2 | – | 2 |
| Aug | 5 | – | 5 |
| Sep | 1 | – | 1 |
| Nov | 1 | – | 1 |
Finding plumbing help around Duluth
Plumbing repair contractors taking requests around Duluth cover ZIP codes 30096, 30097.
Before you call: before the plumber arrives
The data underneath this Duluth page
| Measure | Duluth | Median of 15 | Difference |
|---|---|---|---|
| Built before 1960 | 1.0% | 2.6% | 2 pts lower |
| Built before 1980 | 12% | 21% | 10 pts lower |
| Renter-occupied | 43% | 41% | 3 pts higher |
| Utility-gas heat | 64% | 61% | 3 pts higher |
| Built 2010 or later | 14% | 14% | 1 pts higher |
| Median year built | 1994 | 1994 | same as median |
| Flood reports (10 mi) | 15 | 15 | 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 |
|---|---|---|
| Duluth | 15 | 94 |
| Johns Creek 3.7 mi | 16 | 81 |
| Alpharetta 8.5 mi | 18 | 97 |
| Lawrenceville 9.7 mi | 8 | 11 |
| Dunwoody 10.2 mi | 35 | 100 |
| Roswell 11.8 mi | 21 | 161 |
| ZIP | Claims | Paid | Busiest year |
|---|---|---|---|
| 30096 | 51 | $830,334 | 2009 (19) |
| 30097 | 43 | $842,526 | 2009 (11) |
ZIPs extend past city limits.
| Date | Type | Distance |
|---|---|---|
| Aug 29, 2023 | Flash Flood | 0.9 mi |
| Aug 29, 2023 | Flash Flood | 6.6 mi |
| Aug 29, 2023 | Flash Flood | 0.8 mi |
| Aug 29, 2023 | Flash Flood | 8.7 mi |
| Jan 4, 2023 | Flash Flood | 9.6 mi |
| Jan 4, 2023 | Flash Flood | 5.8 mi |
| Sep 8, 2021 | Flash Flood | 9.8 mi |
| Aug 17, 2021 | Flash Flood | 7.2 mi |
| Built | Units | Share | Margin of error |
|---|---|---|---|
| 2020 or later | 446 | 3.2% | ±160 |
| 2010 to 2019 | 1,517 | 11.0% | ±329 |
| 2000 to 2009 | 2,240 | 16.2% | ±399 |
| 1990 to 1999 | 4,571 | 33.0% | ±547 |
| 1980 to 1989 | 3,434 | 24.8% | ±407 |
| 1970 to 1979 | 968 | 7.0% | ±287 |
| 1960 to 1969 | 530 | 3.8% | ±260 |
| 1950 to 1959 | 135 | 1.0% | ±77 |
| 1940 to 1949 | 0 | 0.0% | ±30 |
| 1939 or earlier | 0 | 0.0% | ±30 |
ACS 2020–2024 estimates; margins of error are the Census Bureau's 90% intervals.
| Measure | Value |
|---|---|
| Housing units | 13,841 |
| Detached single-family | 6,498 (47%) |
| Occupied homes | 13,203 |
| Owner-occupied | 7,461 (57%) |
| Renter-occupied | 5,742 (43%) |
| Median home value | $400,800 |
ACS 2020–2024 estimates.
| Main heating fuel | Homes | Share | Margin of error |
|---|---|---|---|
| Utility gas | 8,434 | 63.9% | ±571 |
| Electricity | 4,541 | 34.4% | ±508 |
| Bottled or tank gas (propane, butane, etc.) | 124 | 0.9% | ±82 |
| No fuel used | 87 | 0.7% | ±85 |
| Fuel oil, kerosene, etc. | 17 | 0.1% | ±27 |
| ZIP (ZCTA) | Share of Duluth's land | Share of the ZIP inside the city |
|---|---|---|
| 30096 | 71% | 32% |
| 30097 | 26% | 11% |
Dated heat and freeze records for the GWINNETT forecast zone: see the county list.
Common Duluth plumbing questions
Are Duluth homes likely to have old galvanized pipes?
Only an inspection can say, but age is the clue: 1% were built before 1960 and 12% before 1980[1].
How often do pipes freeze in Duluth?
The record for Duluth's forecast zone shows 10 winter-storm or freeze days over 2016–2025, in 6 different years[4].
Which ZIP codes are covered in Duluth?
30096 and 30097[6], in Gwinnett County. Nearby suburbs with their own pages: Johns Creek (3.7 mi), Alpharetta (8.5 mi), and Lawrenceville (9.7 mi)[3].
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.