Plumbing repair · Chesterfield, Missouri
Plumbing repair in Chesterfield, MO
Leak, backed-up drain, no hot water, or a frozen line? The largest share of Chesterfield's homes (32%) was built 1970 to 1979[1]. Request a licensed plumber who works here. Chesterfield, in St. Louis County — ZIPs 63017, 63005, counts 49,309 residents (2025 estimate)[2].
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Chesterfield plumbing snapshot: the key figures
- Population (2025 est.)
- 49,309[2]-1.4% since 2020
- County
- St. Louis[2]
- Land area
- 31.8 sq mi[3]
- Decade the most homes date from
- 1970 to 1979[1]32% of housing units
- Homes built before 1980
- 46%[1]the 7th-lowest share of the 15 St. Louis–area suburbs we cover
- Homes built 1980–1999
- 37%[1]2020–2024
- Homes built 2010 or later
- 6%[1]the 7th-highest 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
- 11[4]10 flash floods, 2016–2025; flood-prone homes need working drainage and backflow prevention
- FEMA flood-insurance claims, local ZIPs
- 321[5]9 in the last 10 years; 230 paid
- Homes on utility gas heat
- 74%[1]gas piping work usually needs a permit and a licensed installer
What Chesterfield's numbers say about plumbing
Chesterfield counts 49,309 residents (2025 estimate), growing at a middle-of-the-pack -1.4% since 2020[2]. The city spans 31.8 square miles at 1,550 residents per square mile (the 12th densest) and sits entirely in St. Louis County, served by ZIP codes 63017, 63005[3].
With 6% of homes built since 2010 and 46% before 1980[1], Chesterfield's plumbing runs from brand-new supply lines and fixtures to aging pipe, original valves and water heaters past their rated life.
Mail to Chesterfield goes through 2 ZIP codes — 63017 (50% of the city's land), 63005 (47% of the city's land)[6].
Nearest of the other suburbs we track: Ballwin (4.6 mi S), Maryland Heights (6.9 mi NE) and Wildwood (7.5 mi SW)[3].
46% of Chesterfield's 21,603 housing units predate 1980 and 6% went up in 2010 or later[1] — the 7th-lowest pre-1980 share of the 15 St. Louis–area suburbs we cover; nearby, Ballwin (59%), Maryland Heights (61%), and Wildwood (15%) predate 1980. The 37% built in 1980–1999 are at the age where original water heaters and valves get replaced.
The biggest single slice — 32% — was built 1970 to 1979, and the median home dates to 1982[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: 11 flood or flash-flood reports within 10 miles over 2016–2025[4], and FEMA logged 321 flood-insurance claims across Chesterfield's ZIPs[5]. Homes that take water need working drainage, sump pumps and backflow prevention.
74% of homes heat with utility gas, and 22% of households rent[1].
Chesterfield storm calendar
Within 10 miles of Chesterfield, 2016–2025: 10 flash-flood reports and 1 flood or heavy-rain report[4]. Peak: 91% in April, July, and August. Busiest year 2022 (3); 4 of 10 years had none. Busiest month August 2022 (2). Latest: flash-flood report, Jun 4, 2025, 3.9 mi out.
| Month | Flash flood | Flood & heavy rain | All |
|---|---|---|---|
| Apr | 3 | 1 | 4 |
| Jun | 1 | – | 1 |
| Jul | 3 | – | 3 |
| Aug | 3 | – | 3 |
Get plumbing help in Chesterfield
Plumbing repair contractors taking requests around Chesterfield cover ZIP codes 63017, 63005.
Before you call: before the plumber arrives
The Chesterfield numbers behind this page
| Measure | Chesterfield | Median of 15 | Difference |
|---|---|---|---|
| Built before 1960 | 3.3% | 9.8% | 7 pts lower |
| Flood reports (10 mi) | 11 | 14 | 3 fewer |
| Built before 1980 | 46% | 54% | 8 pts lower |
| Utility-gas heat | 74% | 69% | 5 pts higher |
| Built 2010 or later | 6% | 6% | about the same |
| Renter-occupied | 22% | 23% | about the same |
| Median year built | 1982 | 1977 | 5 years newer |
Sorted by largest difference. Each median is the middle value across the covered St. Louis–area suburbs, from the same sources.
| City | Flood reports | NFIP claims |
|---|---|---|
| Chesterfield | 11 | 321 |
| Ballwin 4.6 mi | 16 | 244 |
| Maryland Heights 6.9 mi | 14 | 161 |
| Wildwood 7.5 mi | 18 | 824 |
| St. Peters 8.7 mi | 8 | 534 |
| Kirkwood 10.0 mi | 20 | 285 |
| ZIP | Claims | Paid | Busiest year |
|---|---|---|---|
| 63017 | 81 | $2,640,450 | 1993 (33) |
| 63005 | 240 | $21,749,817 | 1993 (208) |
ZIPs extend past city limits.
| Date | Type | Distance |
|---|---|---|
| Jun 4, 2025 | Flash Flood | 3.9 mi |
| Apr 5, 2025 | Flood | 8.6 mi |
| Apr 4, 2025 | Flash Flood | 7.9 mi |
| Apr 2, 2024 | Flash Flood | 3.8 mi |
| Apr 15, 2023 | Flash Flood | 6.4 mi |
| Aug 4, 2022 | Flash Flood | 9.8 mi |
| Aug 3, 2022 | Flash Flood | 1.6 mi |
| Jul 26, 2022 | Flash Flood | 5.6 mi |
| Built | Units | Share | Margin of error |
|---|---|---|---|
| 2020 or later | 480 | 2.2% | ±177 |
| 2010 to 2019 | 905 | 4.2% | ±259 |
| 2000 to 2009 | 2,184 | 10.1% | ±327 |
| 1990 to 1999 | 3,143 | 14.5% | ±459 |
| 1980 to 1989 | 4,891 | 22.6% | ±461 |
| 1970 to 1979 | 6,895 | 31.9% | ±596 |
| 1960 to 1969 | 2,397 | 11.1% | ±271 |
| 1950 to 1959 | 332 | 1.5% | ±128 |
| 1940 to 1949 | 74 | 0.3% | ±46 |
| 1939 or earlier | 302 | 1.4% | ±226 |
ACS 2020–2024 estimates; margins of error are the Census Bureau's 90% intervals.
| Measure | Value |
|---|---|
| Housing units | 21,603 |
| Detached single-family | 13,510 (63%) |
| Occupied homes | 20,811 |
| Owner-occupied | 16,143 (78%) |
| Renter-occupied | 4,668 (22%) |
| Median home value | $472,500 |
ACS 2020–2024 estimates.
| Main heating fuel | Homes | Share | Margin of error |
|---|---|---|---|
| Utility gas | 15,332 | 73.7% | ±589 |
| Electricity | 5,177 | 24.9% | ±521 |
| Bottled or tank gas (propane, butane, etc.) | 200 | 1.0% | ±93 |
| No fuel used | 51 | 0.2% | ±59 |
| Wood | 36 | 0.2% | ±44 |
| Solar energy | 15 | 0.1% | ±24 |
| ZIP (ZCTA) | Share of Chesterfield's land | Share of the ZIP inside the city |
|---|---|---|
| 63017 | 50% | 83% |
| 63005 | 47% | 41% |
Dated heat and freeze records for the ST. LOUIS forecast zone: see the county list.
Common Chesterfield plumbing questions
Are Chesterfield homes likely to have old galvanized pipes?
Only an inspection can say, but age is the clue: 3% were built before 1960 and 46% before 1980[1].
How often do pipes freeze in Chesterfield?
The record for Chesterfield's forecast zone shows 12 winter-storm or freeze days over 2016–2025, in 7 different years[4].
Which ZIP codes are covered in Chesterfield?
63017 and 63005[6], in St. Louis County. Nearby suburbs with their own pages: Ballwin (4.6 mi), Maryland Heights (6.9 mi), and Wildwood (7.5 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.