Skip to main content
CityRuleLookup

Montgomery County, MD Animal Ordinances: Dog Leash Laws (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Governing section
Code § 5-203(a)(1)
Class B civil violation
$100 first, $150 repeat
Exemption
Altered cats only
HOA common areas
Not the owner's premises
Enforced by
Office of Animal Services

Summary

County law bans letting a dog run at large, meaning off the owner's property and off-leash, except in designated exercise areas or organized activities.

City-specific rules exist: Gaithersburg, and Rockville have their own dog leash laws rules that differ from Montgomery County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

At large: A dog, except a service animal, is at large if it is outside the owner's premises and not leashed, unless it is in a dog exercise area designated by either the Maryland-National Capital Park and Planning Commission or a municipality, or is participating in a qualified activity... An owner must not: (1) Allow an animal other than an altered cat to be at large.

Source: Montgomery County Municipal CodeView official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-90: Montgomery County Code contains legislation effective through May 7, 2026 | Zoning Updated Effective: April 13, 2026 | COMCOR Regulations effective as of July 1, 2026).

Full Breakdown

Montgomery County Code § 5-203(a)(1) makes it a violation for an owner to "allow an animal other than an altered cat to be at large." Section 5-101 defines a dog as "at large" if it is outside the owner's premises and not leashed, unless it is in a dog exercise area designated by M-NCPPC or a municipality, or participating in a qualified activity. The common area of an HOA, condo, or co-op does not count as the owner's premises, so dogs must be leashed there too.

Violations & Fines

A first violation of Sec. 5-203(a)(1) alone is a Class B civil violation: up to $100 for an initial offense, $150 for a repeat, under Sec. 5-305(a),(c) and the county-wide fine schedule at Sec. 1-19. Each day is a separate offense.

Frequently Asked Questions

Can my dog be off-leash in an HOA common area?
No. Sec. 5-101 specifically excludes HOA, condo, and co-op common areas from the definition of the owner's premises, so a leash is required there.
Is there any place a dog can run off-leash legally?
Yes, in a dog exercise area designated by M-NCPPC (the county park agency) or a municipality, or while participating in a qualified organized activity.

Sources & Official References

Other rules in Montgomery County

All Montgomery County rules

Compare Montgomery County to another location·View the Maryland animal ordinances overview

Get notified when Dog Leash Laws in Montgomery County, MD changes

We'll email you the moment we detect a change in the code. No spam, unsubscribe anytime.

We'll never sell or share your email. One-click unsubscribe in every email.

See something wrong?

Help us keep this page accurate. If you notice an error or outdated information, let us know.

Dog Leash Laws in Cities Across Montgomery County