Independent list · re-checked September 28, 2026 · published by Primortul LLC

Merkle

Merkle is a data-driven customer experience and performance marketing company headquartered in Columbia, Maryland, founded in 1971. It combines first-party data (through its Merkury identity platform), analytics, media, CRM, loyalty and platform engineering for enterprise clients, and now reports more than 16,000 employees in 30-plus countries. Dentsu acquired a majority stake in 2016 and Merkle operates as a dentsu company. Nobody pays to be ranked.

Why it’s hereThe largest data-led performance marketing agency in the US and the anchor of dentsu's customer-experience network; owned by dentsu. Number 1 of the digital marketing agencies in the US.

Work they can showParty City. Migrated the retailer's ecommerce to Shopify for more flexible, personalized commerce.

Estimated cost

Estimated: $6,000–$18,000/mo, typical for US digital marketing retainers; not a quote.

Typical industry estimate, not a quote from any firm on this list.

A fit forLarge enterprises that need customer data, CRM and loyalty programs, commerce platform builds on Salesforce, Shopify or Sitecore, and enterprise AI rollouts handled by a dentsu-owned firm.

Based in
Columbia, MD
Founded
1971
Team size
500+ people
Known for
customer data and analytics · performance media · CRM and loyalty · experience and platform engineering
Named clients
Six Flags, KFC, Under Armour, Volvo Trucks, Signify, Siemens, City of Hope, Burger King, Build-A-Bear
Best for
Large enterprises that need customer data, CRM and loyalty programs, commerce platform builds on Salesforce, Shopify or Sitecore, and enterprise AI rollouts handled by a dentsu-owned firm.
Selected work
  • Party City. Migrated the retailer's ecommerce to Shopify for more flexible, personalized commerce. source ↗
Estimated cost

Estimated: $6,000–$18,000/mo, typical for US digital marketing retainers; not a quote.

Typical industry estimate, not a quote from any firm on this list.

Merkle homepage, captured September 28, 2026
merkle.com · homepage on September 28, 2026

UpdateWholly owned by dentsu, which acquired a majority stake in 2016 and later took full ownership; operates as one of dentsu's leadership brands.

Sources merkle.com, dentsu.com, dentsu.co.jp

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