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Agency 51 Advertising

Marketing and advertising agency in Philadelphia and Orange County for business-to-business and consumer brands

Agency 51 Advertising cover

About Agency 51 Advertising

Marketing built from the client's side of the table

The marketing and branding firm, styled Agency|51, has two bases, in Philadelphia and Orange County. Staff in senior roles came from the client side of business, which the agency says gives it a deeper sense of what its clients are up against. The firm presents its work as driven by business sense, with creative ideas judged by whether they sell.

Strategy built on market analysis

Planning starts with analysis of the market and research into a client's customers. The agency says it plans around specific goals, such as awareness, customer acquisition, loyalty and social engagement, and it measures investment against those goals. A five-stage ideation process moves the work from research to concept.

Business-to-business and consumer campaigns

The agency works in business-to-business marketing and in consumer campaigns. It says it covers a wide range of industries and channels, and it mixes tactics across channels rather than applying one fixed method to every client.

Branding, websites and video

Branding and strategy work aims to help clients identify new opportunities, grow market share and sustain success. Web design, video and social campaigns are built into the same integrated plans, and the firm says its aim is intelligent marketing that makes a client's business grow.

A membership video for a music venue

One example shows the firm's video work in practice: a membership film produced for the House of Blues Foundation Room. The agency also cites a project built around a client's Facebook fan page, which shows how its social work runs alongside its other campaigns.

A team with varied cultural backgrounds

The firm says its team draws on many cultural backgrounds and says that diversity helps it understand a wide range of audiences. It describes its aim as delivering work that exceeds what the client asks for, combining strategy and creativity in each piece.

TrustList summary

Agency 51 Advertising, styled Agency|51, is a marketing and branding agency with offices in Philadelphia and Orange County. Its senior team comes from the client side of business, and it frames its creative work around business goals and sales rather than awards. It handles both business-to-business marketing and consumer campaigns.

Services

  • Strategy: market analysis and research used to plan campaigns for awareness, customer acquisition, loyalty and social engagement.
  • Branding: brand and strategy work to help clients find new opportunities and grow market share.
  • Websites: web site design as part of integrated campaigns.
  • Video and social: video production and social media marketing, such as a membership video for the Foundation Room at House of Blues.
  • Integrated campaigns: a mix of marketing tactics chosen across channels rather than a single fixed approach.

Clients

It works with business-to-business companies and consumer brands across several industries, covering both US coasts from its two offices.

Key facts

  • Offices: Philadelphia and Orange County
  • Team background: senior staff from the client side

Summary written by TrustList from the business's own published information, Nov 2026.

Categories & features

Agency 51 Advertising rankings

Agency 51 Advertising is ranked on 2 TrustList rankings: #17 on 1 and #33 on 1.

Every ranking orders its listings by their reviews, how complete the profile is and the Trust Score. Agency 51 Advertising has no reviews yet and 3 of the 10 profile details we look for. Where no listing on a page has been reviewed, the order follows the profiles alone.

Advertising company · 2 rankings

  • #17of 388
    Video

    It is the only one of the top 93 here listing ideation and one of 2 here listing recommendations.

    Its profile: “Web design, video and social campaigns are built into the same integrated plans, and the firm says its aim is intelligent marketing that makes a client's business grow.”

    Of the top 93 here, 47 also cover advertising and 38 also cover creative; 3 also work in Florida and 3 also work in London.

    Behind Agency | 2.0, ahead of Agency501.

  • #33of 892
    Creative

    It is one of 3 here listing collaboration and one of 7 here listing analytics.

    Its profile: “The firm presents its work as driven by business sense, with creative ideas judged by whether they sell.”

    Of the top 88 here, 25 also cover branding and 21 also cover video; 3 also work in New York and 3 also work in York.

    Behind AGCS, ahead of Agency Creative.

As of 2026-11-14. Organic ranks only; sponsored placements are never ranks. How TrustList ranks

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