Plumbing repair · Ballwin, Missouri
Plumbing repair in Ballwin, MO
Leak, backed-up drain, no hot water, or a frozen line? The largest share of Ballwin's homes (25%) was built 1960 to 1969[1]. Request a licensed plumber who works here. Ballwin, in St. Louis County — ZIPs 63011, 63021, counts 30,901 residents (2025 estimate)[2].
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The Ballwin plumbing picture in brief
- Population (2025 est.)
- 30,901[2]-2.5% since 2020
- County
- St. Louis[2]
- Land area
- 9.1 sq mi[3]
- Decade the most homes date from
- 1960 to 1969[1]25% of housing units
- Homes built before 1980
- 59%[1]the 7th-highest share of the 15 St. Louis–area suburbs we cover
- Homes built 1980–1999
- 33%[1]2020–2024
- Homes built 2010 or later
- 3%[1]the 3rd-lowest share of the 15 St. Louis–area suburbs we cover
- Winter-storm & freeze days, st. louis zone
- 12[4]2016–2025
- Flood & flash-flood reports within 10 mi
- 16[4]14 flash floods, 2016–2025; flood-prone homes need working drainage and backflow prevention
- FEMA flood-insurance claims, local ZIPs
- 244[5]41 in the last 10 years; 176 paid
- Homes on utility gas heat
- 85%[1]gas piping work usually needs a permit and a licensed installer
What the local data means for plumbing in Ballwin
Ballwin is one of the most established suburbs tracked here — 30,901 people (2025 estimate), down just 2.5% since 2020[2]. On the map that's 9.1 square miles holding 3,402 residents per square mile, the 4th densest of the suburbs here; it sits entirely in St. Louis County, with ZIP codes 63011, 63021[3].
With 3% of homes built since 2010 and 59% before 1980[1], Ballwin'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 Ballwin — 63011 (56% of the city's land), 63021 (42% of the city's land)[6].
The closest tracked neighbours are Chesterfield (4.6 mi N), Wildwood (6.5 mi W) and Kirkwood (7.1 mi E)[3].
59% of Ballwin's 12,563 housing units predate 1980 and 3% went up in 2010 or later[1] — the 7th-highest pre-1980 share of the 15 St. Louis–area suburbs we cover; nearby, Chesterfield (46%), Wildwood (15%), and Kirkwood (70%) predate 1980. The 33% built in 1980–1999 are at the age where original water heaters and valves get replaced.
The biggest single slice — 25% — was built 1960 to 1969, and the median home dates to 1976[1]. Neighbours from the same era tend to hit the same plumbing problems at the same time.
Freeze risk: the st. louis forecast zone logged 12 winter-storm, ice or hard-freeze days in 2016–2025, including February 2021; the latest was Dec 1, 2025[4].
Water from the sky is plumbing work too: 16 flood or flash-flood reports within 10 miles over 2016–2025[4], and FEMA logged 244 flood-insurance claims across Ballwin's ZIPs[5]. Homes that take water need working drainage, sump pumps and backflow prevention.
85% of homes heat with utility gas, and 16% of households rent[1].
Measured against the 15 suburbs on this site, Ballwin records the highest gas-heat share (85%)[1], the 2nd-lowest renter share (16%)[1], and the 3rd-lowest share of homes built since 2010 (3%)[1].
Ballwin storm calendar
Within 10 miles of Ballwin, 2016–2025: 14 flash-flood reports and 2 flood or heavy-rain reports[4]. Peak: 88% in April, July, and August. Busiest year 2022 (4); 3 of 10 years had none. Busiest month August 2019 (2). Latest: flash-flood report, Jun 4, 2025, 8.3 mi out.
| Month | Flash flood | Flood & heavy rain | All |
|---|---|---|---|
| Apr | 2 | 1 | 3 |
| May | – | 1 | 1 |
| Jun | 1 | – | 1 |
| Jul | 7 | – | 7 |
| Aug | 4 | – | 4 |
Get plumbing help in Ballwin
Requests go to Plumbing repair contractors serving the Ballwin area — ZIP codes 63011, 63021.
Before you pick up the phone: before the plumber arrives
Ballwin by the numbers
| Measure | Ballwin | Median of 15 | Difference |
|---|---|---|---|
| Built 2010 or later | 3% | 6% | 3 pts lower |
| Renter-occupied | 16% | 23% | 7 pts lower |
| Utility-gas heat | 85% | 69% | 16 pts higher |
| Flood reports (10 mi) | 16 | 14 | 2 more |
| Built before 1980 | 59% | 54% | 5 pts higher |
| Median year built | 1976 | 1977 | 1 year older |
| Built before 1960 | 9.8% | 9.8% | same as median |
Biggest gaps first. Medians are middle values across the St. Louis–area suburbs we cover, drawn from the same sources.
| City | Flood reports | NFIP claims |
|---|---|---|
| Ballwin | 16 | 244 |
| Chesterfield 4.6 mi | 11 | 321 |
| Wildwood 6.5 mi | 18 | 824 |
| Kirkwood 7.1 mi | 20 | 285 |
| Maryland Heights 9.4 mi | 14 | 161 |
| Webster Groves 10.6 mi | 21 | 111 |
| ZIP | Claims | Paid | Busiest year |
|---|---|---|---|
| 63011 | 114 | $3,163,305 | 1993 (15) |
| 63021 | 130 | $1,634,277 | 1993 (20) |
ZIPs extend past city limits.
| Date | Type | Distance |
|---|---|---|
| Jun 4, 2025 | Flash Flood | 8.3 mi |
| May 19, 2025 | Heavy Rain | 8.3 mi |
| Apr 5, 2025 | Flood | 4.1 mi |
| Apr 2, 2024 | Flash Flood | 3.8 mi |
| Jul 17, 2023 | Flash Flood | 9.5 mi |
| Apr 15, 2023 | Flash Flood | 6.9 mi |
| Aug 3, 2022 | Flash Flood | 6.8 mi |
| Aug 3, 2022 | Flash Flood | 6.0 mi |
| Built | Units | Share | Margin of error |
|---|---|---|---|
| 2020 or later | 0 | 0.0% | ±26 |
| 2010 to 2019 | 336 | 2.7% | ±136 |
| 2000 to 2009 | 666 | 5.3% | ±236 |
| 1990 to 1999 | 1,995 | 15.9% | ±374 |
| 1980 to 1989 | 2,162 | 17.2% | ±368 |
| 1970 to 1979 | 3,028 | 24.1% | ±403 |
| 1960 to 1969 | 3,139 | 25.0% | ±434 |
| 1950 to 1959 | 1,000 | 8.0% | ±205 |
| 1940 to 1949 | 180 | 1.4% | ±117 |
| 1939 or earlier | 57 | 0.5% | ±45 |
ACS 2020–2024 estimates; margins of error are the Census Bureau's 90% intervals.
| Measure | Value |
|---|---|
| Housing units | 12,563 |
| Detached single-family | 10,207 (81%) |
| Occupied homes | 12,079 |
| Owner-occupied | 10,165 (84%) |
| Renter-occupied | 1,914 (16%) |
| Median home value | $377,100 |
ACS 2020–2024 estimates.
| Main heating fuel | Homes | Share | Margin of error |
|---|---|---|---|
| Utility gas | 10,290 | 85.2% | ±463 |
| Electricity | 1,684 | 13.9% | ±353 |
| Bottled or tank gas (propane, butane, etc.) | 92 | 0.8% | ±61 |
| Wood | 13 | 0.1% | ±21 |
| ZIP (ZCTA) | Share of Ballwin's land | Share of the ZIP inside the city |
|---|---|---|
| 63011 | 56% | 36% |
| 63021 | 42% | 17% |
Dated heat and freeze records for the ST. LOUIS forecast zone: see the county list.
Ballwin plumbing questions
Are Ballwin homes likely to have old galvanized pipes?
Only an inspection can say, but age is the clue: 10% were built before 1960 and 59% before 1980[1].
How often do pipes freeze in Ballwin?
The record for Ballwin's forecast zone shows 12 winter-storm or freeze days over 2016–2025, in 7 different years[4].
Which ZIP codes are covered in Ballwin?
63011 and 63021[6], in St. Louis County. Nearby suburbs with their own pages: Chesterfield (4.6 mi), Wildwood (6.5 mi), and Kirkwood (7.1 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.