More of Olney's land is zoned R-200 (residential) than any other district. R-200 — Residential Detached — Detached houses on lots of about 20,000 square feet. See the Montgomery County Zoning Ordinance for the uses and standards that apply to this zone.
Updated Nov 11, 2026 · Reflects the latest available zoning classification; updated periodically.R-200 — Residential Detached — Detached houses on lots of about 20,000 square feet. See the Montgomery County Zoning Ordinance for the uses and standards that apply to this zone.
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The most common zoning district by land area in Olney is R-200 (residential). Zoning varies by parcel — search an address above for the exact classification.
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Search OlneyZoning reflects the districts inside the Olney Census place (the boundary outlined on the map); actual zoning varies parcel by parcel — search an address for its exact district. Source: Montgomery County open data (Police, Permitting Services, Health and Human Services) and M-NCPPC. Open data updates on a delay, so the most recent records may be incomplete. For general information only — not legal, financial, or real-estate advice.