Agencies worth talking to if you are shortlisting a digital marketing partner in Westchester County, with what each one does and where it is based. Healthcare, financial services, law firms, private schools and consumer brands based between White Plains, Tarrytown and Rye make up much of the demand.
We publish this page, so rather than scoring ourselves against the agencies below, here is what we do and you can judge for yourself.
We get businesses found on Google and named inside AI answers. SEO, content and the website itself, handled by one team rather than three vendors.
Koramangala, Bengaluru, IndiaPublished by SEO Sadhu · we publish this page, so we have kept ourselves out of the ranked list below.Four things decided who made it, and one thing decided how we present ourselves.
An operating office in the city, not a nameplate address on a national website.
Everything we list comes from the agency's own site. Anything they do not publish is marked Not disclosed.
Agencies that are visibly better at something specific, rather than listing every service in existence.
Named clients published by the agency, not logo walls with no names attached.
Sorted by nothing in particular. Anything an agency does not publish is marked Not disclosed rather than guessed at.
| Agency | Westchester County location | Best for | Core services |
|---|---|---|---|
| Thompson & Bender | Briarcliff Manor, NY 10510 | Westchester institutions and developers needing PR, ads and digital | Marketing and advertising, Public relations, Social media, Content and SEO, Media planning and buying, Web design |
| iDesign | Larchmont, NY 10538 | Local businesses needing branding, print, signage and websites | Branding and logo design, Web design and Shopify, Printing and signage, Local SEO, Social media, Paid advertising |
| Co-Communications | White Plains, NY 10605 | Real estate, healthcare and nonprofits needing PR and marketing | Public relations, Marketing, Creative services, Personal branding, Market research, Podcast marketing |
| Harry Marketing | Armonk, NY 10504 | Healthcare, real estate and infrastructure firms needing PR and outreach | Public relations, Community and stakeholder outreach, Content creation, Digital campaigns, Media planning and buying, Event management |
| MSM Digital | Tarrytown, NY 10591 | Professional-services, legal and medical firms needing lead generation | Branding and awareness, Lead generation, Content creation, Public relations, Social media |
| C&A Digital | White Plains, NY 10601 | Pharma, healthcare and publishing brands needing design-led campaigns | Brand identity, Healthcare communications, Digital product and UX design, Campaign design, Content strategy |
| Buzz Creators | Valhalla, NY 10595 | Hospitality, real estate and nonprofits needing PR and social | Public relations, Social media, Branding, Advertising and media buying, Graphic design, Crisis communications |
Seven agencies serving Westchester County, each with a clear speciality. Descriptions are drawn from each agency’s own website.
Westchester's agencies are spread across White Plains, Tarrytown, Armonk and the Sound Shore towns, and many combine marketing with public relations for the county's healthcare, real estate and nonprofit sectors. Firms that list only a town name or now work only from Manhattan were left out, as were agencies on our New York page.
Thompson & Bender is a marketing and PR agency on Pleasantville Road in Briarcliff Manor, founded in 1986. It handles advertising, PR, social, SEO, events, media buying and web for regional clients.
iDesign is a branding, print and web studio on Boston Post Road in Larchmont, operating since 1994. It also offers local SEO, social media, email and paid advertising.
Co-Communications is a marketing, PR and design firm on Bloomingdale Road in White Plains, founded in 1997. It also lists offices in West Hartford and New York City.
Harry, formerly Harrison Edwards PR & Marketing, is an integrated marketing agency on Business Park Drive in Armonk. It covers PR, community engagement, content and traditional and digital campaigns.
MSM Digital, formerly MSM Designz, has its head office on White Plains Road in Tarrytown and dates to 1999. It offers branding, lead generation, content and PR.
C&A Digital is on North Broadway in White Plains and has been in business since 2011. It runs health, publishing and digital practices covering brand, UX and campaign design.
Buzz Creators is a PR, marketing and social media agency on Columbus Avenue in Valhalla, founded in 2009. It handles media relations, events, social, branding and media buying.
Six questions worth asking whoever you shortlist.
Strong at D2C performance marketing does not mean strong at B2B SEO. Shortlist for your actual bottleneck.
The people who pitch are often not the people on the account. Ask, and ask how many other clients they carry.
Ask for a redacted monthly report. If nothing in it connects to inquiries or revenue, expect an awkward month four.
Buyers now ask assistants before search engines. Ask how they get clients named in those answers.
Notice period, and whether your ads account, analytics and website stay in your name when you leave.
Nobody controls Google. A promised position means they misunderstand that, or expect you to.
This page is published by SEO Sadhu, an SEO agency in Bangalore. We have put ourselves in a separate featured card above rather than ranking ourselves against the agencies in the list, because scoring yourself first on your own page is not a ranking.
The agencies are presented in no particular order of merit. Every fact about them comes from their own website, checked in September 2026.
Think we have got something wrong about your agency, or want to be removed? Email seosadhu@gmail.com and we will fix it.
What people ask us while they are shortlisting.
Send us the agencies you are considering and what you are trying to achieve. We will tell you honestly which of them fits your problem, even when the answer is not us.
Is your business visible on Google & AI search?
Share your website and we’ll show you what’s holding your rankings back.
Thanks, we’ve got it!
Our team will call you within 24 hours with your free audit.
