Plumbing repair · Kennesaw, Georgia

Plumbing repair in Kennesaw, GA

Leak, backed-up drain, no hot water, or a frozen line? The largest share of Kennesaw's homes (32%) was built 2000 to 2009^[1]. Request a licensed plumber who works here. Kennesaw, in Cobb County — ZIPs 30144, 30152, counts 37,970 residents (2025 estimate)^[2].

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Decision guide

Kennesaw at a glance for plumbing

Population (2025 est.): 37,970^[2]+14.3% since 2020
County: Cobb^[2]
Land area: 9.8 sq mi^[3]
Population density: 3,887 / sq mi^[2]^[3]
Decade the most homes date from: 2000 to 2009^[1]32% of housing units
Homes built before 1980: 11%^[1]the 5th-lowest share of the 15 Atlanta-area suburbs we cover
Homes built 1980–1999: 44%^[1]2020–2024
Homes built 2010 or later: 14%^[1]the 8th-highest share of the 15 Atlanta-area suburbs we cover
Winter-storm & freeze days, cobb zone: 6^[4]2016–2025
Flood & flash-flood reports within 10 mi: 8^[4]7 flash floods, 2016–2025; flood-prone homes need working drainage and backflow prevention
FEMA flood-insurance claims, local ZIPs: 107^[5]10 in the last 10 years; 82 paid
Homes on utility gas heat: 67%^[1]gas piping work usually needs a permit and a licensed installer

Reading the Kennesaw data for plumbing

Kennesaw is one of the fastest-growing Atlanta-metro suburbs tracked here: 37,970 people (2025 estimate), up 14.3% since 2020^[2]. It covers 9.8 square miles (3,887 residents per square mile, the 2nd densest), sits entirely in Cobb County, in ZIP codes 30144, 30152^[3].

With 14% of homes built since 2010 and 11% before 1980^[1], Kennesaw's plumbing runs from brand-new supply lines and fixtures to aging pipe, original valves and water heaters past their rated life.

Mail to Kennesaw goes through 2 ZIP codes — 30144 (59% of the city's land), 30152 (38% of the city's land)^[6].

The closest tracked neighbours are Marietta (6.6 mi SE), Woodstock (7.9 mi NE) and Smyrna (12.8 mi SE)^[3].

11% of Kennesaw's 14,380 housing units predate 1980 and 14% went up in 2010 or later^[1] — the 5th-lowest pre-1980 share of the 15 Atlanta-area suburbs we cover; nearby, Marietta (33%), Woodstock (7%), and Smyrna (28%) predate 1980. The 44% built in 1980–1999 are at the age where original water heaters and valves get replaced.

The biggest single slice — 32% — was built 2000 to 2009, and the median home dates to 1998^[1]. Neighbours from the same era tend to hit the same plumbing problems at the same time.

Freeze risk: the cobb forecast zone logged 6 winter-storm, ice or hard-freeze days in 2016–2025; the latest was Feb 8, 2020^[4].

Water from the sky is plumbing work too: 8 flood or flash-flood reports within 10 miles over 2016–2025^[4], and FEMA logged 107 flood-insurance claims across Kennesaw's ZIPs^[5]. Homes that take water need working drainage, sump pumps and backflow prevention.

67% of homes heat with utility gas, and 35% of households rent^[1]. Tenants: report plumbing failures to the landlord in writing.

Out of the 15 suburbs on this site, Kennesaw has the 3rd-highest gas-heat share (67%)^[1] and the 3rd-fewest flood reports nearby (8, tied with Peachtree City and Lawrenceville)^[4].

Kennesaw storm calendar

Within 10 miles of Kennesaw, 2016–2025: 7 flash-flood reports and 1 flood or heavy-rain report^[4]. Peak: 63% in February, April, and November. Busiest year 2018 (2); 5 of 10 years had none. Busiest month November 2018 (2). Latest: flash-flood report, Sep 7, 2021, 5.8 mi out.

Kennesaw, 2016–2025
Month	Flash flood	Flood & heavy rain	All
Feb	2	–	2
Apr	1	–	1
May	1	–	1
Jul	–	1	1
Sep	1	–	1
Nov	2	–	2

Darker squares, more reports. NOAA Storm Events Database^[4].

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Before you pick up the phone: before the plumber arrives

The data underneath this Kennesaw page

Kennesaw against the typical suburb we cover (median of 15)^[1]^[4]
Measure	Kennesaw	Median of 15	Difference
Built before 1980	11%	21%	10 pts lower
Flood reports (10 mi)	8	15	7 fewer
Built before 1960	2.1%	2.6%	about the same
Renter-occupied	35%	41%	5 pts lower
Utility-gas heat	67%	61%	7 pts higher
Median year built	1998	1994	4 years newer
Built 2010 or later	14%	14%	same as median

Largest differences first. Medians are the middle value across the covered Atlanta-area suburbs, from the same sources.

How Kennesaw compares with its nearest neighbours^[4]^[5]^[3]
City	Flood reports	NFIP claims	Freeze days
Kennesaw	8	107	6
Marietta 6.6 mi	11	610	6
Woodstock 7.9 mi	5	38	8
Smyrna 12.8 mi	31	185	6
Roswell 15.3 mi	21	161	—
Sandy Springs 15.7 mi	35	1,429	—

Flood-insurance claims by ZIP code, since 1979^[5]
ZIP	Claims	Paid	Busiest year
30144	74	$1,443,796	2009 (48)
30152	33	$540,165	2009 (23)

ZIPs extend past city limits.

Most recent flood reports within 10 miles^[4]
Date	Type	Distance
Sep 7, 2021	Flash Flood	5.8 mi
May 4, 2021	Flash Flood	9.9 mi
Feb 6, 2020	Flash Flood	2.7 mi
Feb 6, 2020	Flash Flood	9.8 mi
Nov 12, 2018	Flash Flood	3.8 mi
Nov 12, 2018	Flash Flood	7.6 mi
Apr 5, 2017	Flash Flood	4.8 mi
Jul 6, 2016	Heavy Rain	9.1 mi

When Kennesaw's 14,380 housing units were built^[1]
Built	Units	Share	Margin of error
2020 or later	280	1.9%	±117
2010 to 2019	1,667	11.6%	±363
2000 to 2009	4,531	31.5%	±512
1990 to 1999	4,376	30.4%	±456
1980 to 1989	1,954	13.6%	±347
1970 to 1979	615	4.3%	±187
1960 to 1969	657	4.6%	±202
1950 to 1959	215	1.5%	±82
1940 to 1949	14	0.1%	±23
1939 or earlier	71	0.5%	±55

ACS 2020–2024 estimates; margins of error are the Census Bureau's 90% intervals.

Kennesaw housing and households^[1]
Measure	Value
Housing units	14,380
Detached single-family	8,335 (58%)
Occupied homes	13,554
Owner-occupied	8,753 (65%)
Renter-occupied	4,801 (35%)
Median home value	$335,400

ACS 2020–2024 estimates.

How Kennesaw's 13,554 occupied homes are heated^[1]
Main heating fuel	Homes	Share	Margin of error
Utility gas	9,108	67.2%	±525
Electricity	4,023	29.7%	±464
No fuel used	229	1.7%	±247
Bottled or tank gas (propane, butane, etc.)	166	1.2%	±99
Wood	28	0.2%	±42

ZIP code areas covering Kennesaw^[6]
ZIP (ZCTA)	Share of Kennesaw's land	Share of the ZIP inside the city
30144	59%	26%
30152	38%	16%

Dated heat and freeze records for the COBB forecast zone: see the county list.

Common Kennesaw plumbing questions

Are Kennesaw homes likely to have old galvanized pipes?

Only an inspection can say, but age is the clue: 2% were built before 1960 and 11% before 1980^[1].

How often do pipes freeze in Kennesaw?

The record for Kennesaw's forecast zone shows 6 winter-storm or freeze days over 2016–2025, in 5 different years^[4].

Which ZIP codes are covered in Kennesaw?

30144 and 30152^[6], in Cobb County. Nearby suburbs with their own pages: Marietta (6.6 mi), Woodstock (7.9 mi), and Smyrna (12.8 mi)^[3].

Sources

Data pulled Sep 28, 2026. Full citations and method.