Updated September 10, 2026
How much housing does Hagerstown have?
The Census counts 19,996 housing units in Hagerstown for a population of about 43,490 — roughly 2.2 people for every housing unit.
That makes Hagerstown the fourth largest of the four Maryland cities with a page here; Baltimore counts 293,631.
Who arranges chimney work on a Hagerstown home?
About 43.4% of occupied Hagerstown homes are owner-occupied, which leaves about 56.6% rented.
With 56.6% of occupied Hagerstown homes rented, the person who notices the smell, the stain or the smoke is more often than not a tenant, and the person who authorizes a repair is someone else. Say which you are when you send a request, so the findings reach whoever has to act on them.
Tenure also decides who keeps the paperwork. A Hagerstown chimney's earlier reports follow the property, not the occupant, so ask for them whichever side of that 43.4% you are on.
Which cities near Hagerstown have their own page here?
Frederick, about 22 miles away, Gaithersburg, about 44 miles away, and Baltimore, about 64 miles away — measured from Hagerstown.
Those are great-circle distances between the Census 2023 Gazetteer interior points of each place, so the drive is longer than the figure.
Frederick's median build year is 1990 against Hagerstown's 1962, a 28-year difference in the housing the two chimneys belong to.
What you can observe safely
- Note whether stains return after rain.
- Photograph the pattern without scraping or applying chemicals.
What to avoid
- Do not climb onto the roof or enter the chimney.
- Do not alter gas components, venting, or safety controls.
- Do not use a test fire to diagnose the problem.
Possible causes to assess
- Moisture movement
- Soluble deposits
- Other surface staining requiring identification
A symptom cannot establish the cause remotely. An assessment of the complete system helps determine the appropriate repair.
Chimney repair in HagerstownA few common questions
Can this be diagnosed from a photo?
A photo can document a symptom and help prepare a visit. It cannot confirm concealed conditions or establish that a chimney or fuel-burning appliance is safe.