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Businesses in Mercer Island, Washington

686 local businesses across 81 categories. 0.3% of everything listed in Washington.

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Mercer Island, WA has 686 businesses listed on USA Business Search in 81 categories across 1 ZIP code. The most-listed are real estate agents, business consulting, lawyers.

Updated November 2026

Most listed in Mercer Island

Home services

Marketing & advertising

Auto

Food & drink

Health & medical

Beauty & personal care

Professional services

Real estate

Finance & insurance

Legal

Shopping & retail

Pets

Fitness & recreation

Hotels & travel

Education & childcare

Events & entertainment

Business & industrial

Community & faith

More businesses in Mercer Island

Propane & energy (4)

House cleaning (4)

Staffing & employment (4)

Nail salons (4)

Travel agencies (4)

Manufacturing & wholesale (4)

Martial arts (4)

Software development (3)

Phones & electronics (3)

Mexican restaurants (3)

Property management (3)

Marketing agencies (3)

Photographers & video (3)

Pet stores (3)

Yoga studios (3)

Garage doors (2)

Electricians (2)

Thrift & consignment (2)

Pharmacies (2)

Eye care (2)

Dance studios (2)

Dry cleaning & laundry (2)

Plumbers (2)

Auto repair (2)

Self storage (2)

Hotels & lodging (2)

Car wash & detailing (1)

Flooring (1)

Clothing & boutiques (1)

Campgrounds & RV parks (1)

Advertising agencies (1)

Auto parts (1)

Handyman services (1)

Hardware & garden (1)

Shipping & couriers (1)

Furniture & home decor (1)

Movers & hauling (1)

Event planning & weddings (1)

Urgent care & hospitals (1)

Florists & gifts (1)

Farms & agriculture (1)

Catering (1)

Golf (1)

Common questions

How many businesses are listed in Mercer Island, Washington?

USA Business Search lists 686 businesses in Mercer Island across 81 categories. The most-listed are real estate agents, business consulting, lawyers.

Which ZIP codes does Mercer Island cover?

Listings include ZIP codes 98040.

How do I check that a Mercer Island business is legitimate?

Search the state's business registry and licensing boards. Our Washington business lookup guide links each official search.

How do I add my business?

It's free: use Add your business. Owners can also claim and fix an existing listing.

Other Washington cities

Own a business in Mercer Island? Add it free or claim your listing.
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