J Walter Thompson Company

New York has 1106 advertising agency listings on SiteCity, and they cluster hard around a few zip codes. Zip 10001 alone holds 93 listings, followed by 10018 with 60 and 10013 with 50, so if you're comparing agencies nearby, start your search there before widening out. Most listings include contact info you can actually use: 1087 have a phone number and 1066 list a website, which covers nearly all of them. Call two or three that match what you need and ask about their work directly, since this page doesn't rank or endorse any agency.

None of the New York listings here are marked Sponsored, so what you see is pulled from what's on file rather than a paid slot; any Sponsored placement that appears later will be labeled right on that row. If you run one of these agencies and the phone number or website is out of date, you can claim the listing and fix it yourself rather than waiting on someone else to catch it. Beyond the top zip codes, listings spread across areas like 10010, 10016, and 10022, so it's worth checking a nearby zip too if your first pick doesn't pan out.