# Plumbing companies in Maryland

There are **3,228 plumbing companies** in Maryland (CityPreferred count, October 2026). Baltimore has the most (232), then Silver Spring (93).

## Maryland cities

**Plumbing companies in Maryland by city, October 2026**

| City | Companies |
| --- | --- |
| Baltimore | 232 |
| Silver Spring | 93 |
| Gaithersburg | 92 |
| Frederick | 84 |
| Maryland City | 84 |
| Rockville | 64 |
| Waldorf | 57 |
| Pasadena | 55 |
| Laurel | 55 |
| Hyattsville | 49 |
| Westminster | 48 |
| Annapolis | 47 |
| Hagerstown | 45 |
| Bowie | 44 |
| Cumberland | 41 |
| Essex | 40 |
| Clinton | 36 |
| Columbia | 36 |
| Bel Air | 35 |
| Parkville | 33 |
| Glen Burnie | 32 |
| Catonsville | 32 |
| Salisbury | 31 |
| Germantown | 30 |
| Mount Airy | 29 |
| Upper Marlboro | 27 |
| Bethesda | 26 |
| Middle River | 26 |
| Sykesville | 24 |
| Ellicott City | 22 |
| Dundalk | 22 |
| Nottingham | 21 |
| Beltsville | 21 |
| Mechanicsville | 21 |
| Berlin | 20 |
| Fallston | 20 |
| Halethorpe | 20 |

## Maryland and the rest of the country

Maryland has 3,228 of the 185,402 plumbing companies in the country (2%). [All states](https://citypreferred.com/data/plumbing).

## What is counted

Independent businesses that do this work, for homes or for businesses. Suppliers, stores and national chains are left out. Being counted does not mean a company is licensed, insured or recommended. A city is listed when it has 20 or more. [How we count](https://citypreferred.com/data-methodology).

## Questions and answers

### How many plumbing companies are there in Maryland?

3,228, by CityPreferred's count as of October 2026.

### Which Maryland city has the most?

Baltimore, with 232, followed by Silver Spring with 93.

## Need a company for this?

Tell CityPreferred the job and your ZIP code at https://citypreferred.com/request. A person checks the request and one local company that does that kind of work contacts you. Free for you; the company pays CityPreferred. Details: https://citypreferred.com/how-we-are-paid

---

Canonical page: https://citypreferred.com/data/plumbing/md

Last reviewed: 2026-10-01

Publisher: CityPreferred (https://citypreferred.com)