Microchipping: Portland vs Seattle
How do microchipping rules compare between Portland, OR and Seattle, WA?
Portland has fewer restrictions than Seattle.
Portland, OR
Multnomah County
Multnomah County does not currently require microchipping of all dogs and cats, but microchipping is mandatory for any animal designated 'potentially dangerous' under MCC 13.401 and is required for the discounted lifetime license tag program under MCC 13.301. All animals impounded by Multnomah County Animal Services are scanned for microchips on intake under MCC 13.701, and unclaimed sterilized animals are typically microchipped before adoption.
View full Portland rules →Seattle, WA
King County
The Seattle Animal Shelter microchips every dog, cat, and rabbit adopted from the facility. SMC 9.25 does not mandate microchipping for all owned pets, but chips dramatically improve return rates for impounded animals.
View full Seattle rules →Key Facts Comparison
| Fact | Portland | Seattle |
|---|---|---|
| Mandatory For | Dangerous dogs + lifetime-license pets | - |
| General Mandate | Not required (recommended only) | - |
| Shelter Scanning | Required on intake (MCC 13.701; ORS 609.108) | - |
| Adoption Standard | MCAS chips before placement | - |
| Registration | Owner must keep contact info current | Owner responsibility |
| SAS adoptions | - | 100% chipped |
| Walk-in clinic | - | $25 |
| Mandate | - | None citywide |
Highlighted rows indicate differences between cities.
Portland FAQ
Does Portland require me to microchip my dog or cat?
No, microchipping is not a general requirement in Portland or Multnomah County. It is mandatory only for dogs designated 'potentially dangerous' under MCC 13.401 and for animals enrolled in the discounted lifetime-license tag program under MCC 13.301.
Will Multnomah County Animal Services scan my lost pet for a chip?
Yes. MCC 13.701 and ORS 609.108 require shelters to scan every impounded animal with a universal microchip reader before any disposition. Keeping your chip registration current is the single best way to be reunited with a lost pet.
Seattle FAQ
Do I have to microchip my pet in Seattle?
No, microchipping is voluntary for non-shelter pets. However, SAS strongly recommends it; chipped pets are reunited with owners 3x more often than tagged-only animals.
Where can I get my pet microchipped cheaply?
SAS holds low-cost microchip clinics at $25, including registration. Many Seattle vet clinics also offer chips for $40-75 during routine visits.
Compare other topics
See how Portland and Seattle compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool