There are 10 public relations firms headquartered in St. Louis that we could verify against their own website. Every fact below — address, founding year, specialism, client names — is taken from the firm's own site and was checked in August 2026. Where a firm publishes no client list, this page says so rather than filling the gap from somewhere else.
That sounds like a low bar. Almost no St. Louis agency round-up clears it, including the version of this page we replaced — it carried firms that had closed, firms headquartered in other states, and client names we could not find anywhere except on our own page. We rebuilt it from the websites up and published what we threw out, which is the part most buyers will find useful.
On this page
- Do you actually need a PR firm in St. Louis?
- The PR firms based in St. Louis
- Which St. Louis firm covers which sector
- Who we left out, and why
- The one thing to check before you sign anything
- The St. Louis outlets a local firm should already know
- How to check any of these firms yourself
- How this page was built
Do you actually need a PR firm in St. Louis?
Usually not, and it is worth being honest about that before a list of names. Media relations is done by email and phone. A firm in another city can pitch a St. Louis reporter as effectively as one down the road, and the national trade press that most B2B companies actually want does not care where anyone sits.
Local matters in three situations. If your story is genuinely local — a new facility, a hiring announcement, a local controversy — then relationships with the St. Louis outlets below are worth paying for. If you are in a regulated or government-adjacent business, local knowledge of who decides what is real value. And if your leadership will only work face to face, that is a legitimate preference and you should buy for it.
Outside those, hire on category experience rather than postcode. A firm that has covered your industry for a decade beats a firm that is nearby.
The PR firms based in St. Louis
The rest are listed alphabetically. This is not a ranking — nobody can rank agencies they have not worked with, and a numbered list that implies otherwise is the main thing wrong with most guides like this.
AMM Communications
- Where they are. 12420 S. 40 Drive, Town & Country — a St. Louis County municipality, not the city
- Founded. 2008
- Size. Not published.
- What they do. “A premier St. Louis PR firm integrating media relations, crisis communications, and revenue-driven marketing.” Certified woman-owned.
- Clients they publish. A large current logo wall including Pfizer, Nestlé Purina, Enterprise Bank & Trust, Special Olympics Missouri, Easterseals Midwest and St. Louis County Government.
- Worth knowing. Named a top St. Louis PR firm by Small Business Monthly for 17 consecutive years.
Their site: ammcommunications.com
BYRNE PR
- Where they are. 4337 Manchester Rd, St. Louis — city proper, in The Grove
- Founded. 2011
- Size. Not published.
- What they do. “Strategic and effective public relations… the skills and relationships to effectively communicate client messages.” Founded by a former Anheuser-Busch communicator.
- Clients they publish. Current logo wall: AB Mauri, Grant's Farm, Anheuser-Busch, Luxco, Purina, Edward Jones, Saint Louis University, Imo's Pizza, Cigna.
- Worth knowing. Use the.net address. Their.com is a parked domain that serves nothing.
Their site: byrnepr.net
Chemistry PR & Multimedia
- Where they are. No street address published; states it is headquartered in St. Louis
- Founded. 2009
- Size. Not published.
- What they do. “A turnkey, full-service public relations and multimedia firm” working with mid-sized companies, associations and mission-driven organisations.
- Clients they publish. Publishes no client list.
- Worth knowing. Two things. This is a different company from the similarly named Chemistry PR in San Diego — chemistrypr.com is theirs, not this firm's. And an old roster naming several professional sports teams circulates online; it comes from a firm blog post from around 2014 and is not on their current site.
Their site: chemistrymultimedia.com
Common Ground Public Relations
- Where they are. 14755 N. Outer Forty Road, Suite 212, Chesterfield — a St. Louis County municipality, not the city
- Founded. 2003
- Size. Not published.
- What they do. “A full-service, award-winning St. Louis public relations firm with local, regional and national clients.” Certified woman-owned.
- Clients they publish. No roster published; clients appear only as award credits.
- Worth knowing. Voted the best PR firm in St. Louis in the 2026 Small Business Monthly poll, and recognised every year since 2003. Worth knowing that is a readers' vote rather than an independent ranking.
Their site: commongroundpr.com
Elasticity
- Where they are. 3333 Washington Ave, Suite 204, St. Louis — city proper
- Founded. 2009
- Size. Not published.
- What they do. A full-service marketing agency with public relations as one named practice, covering crisis work and thought leadership.
- Clients they publish. Named on their homepage: Fireball, GoDaddy, Missouri Wine & Grape Board.
- Worth knowing. Lists offices in four cities and does not flag which is head office.
Their site: goelastic.com
Pattan & Co.
- Where they are. No street address published; states it is based in St. Louis
- Founded. 2017
- Size. Not published.
- What they do. “A strategic communications firm based in St. Louis, with deep local relationships and an active national practice.”
- Clients they publish. A long list on their services page including Nine PBS, The Fabulous Fox Theatre, City Museum, Great Rivers Greenway, Downtown STL and Greater St. Louis Inc. Note their own hedge — the list covers current, past and project work.
Their site: pattan.co
Solomon/Turner Public Relations
- Where they are. 36 Four Seasons Shopping Center #346, Chesterfield
- Size. Not published.
- What they do. A St. Louis public relations firm, named a top firm by Small Business Monthly ten years running.
- Clients they publish. The names published are a historical roster, not current clients — two of them no longer exist under those names.
Their site: solomonturner.com
Standing Partnership
- Where they are. PO Box only; no street address published
- Size. Not published.
- What they do. Strategic communications and reputation work rather than a pure media-relations shop.
- Clients they publish. Named on their homepage: ServiceNow, Splunk, Bayer, Deloitte, Cisco, GitHub, Tronox, Belden, Fastenal.
- Worth knowing. Became an operating group of Dix & Eaton, a Cleveland firm, in November 2023. The brand and site are retained but the leadership shown is now the parent's.
Their site: standingpartnership.com
The Hauser Group
- Where they are. 12813 Flushing Meadows Drive, Suite 270, St. Louis — a west-county address
- Size. Not published.
- What they do. “A premier St. Louis public relations firm providing strategic marketing and communications services”, heavily weighted to transit and infrastructure.
- Clients they publish. Logo wall only: St. Louis Regional Freightway, Bi-State Development, Metro, St. Louis Downtown Airport, Clean Air Partnership.
- Worth knowing. States the average length of a current client relationship is 18 years, which is an unusual and useful number to publish.
Their site: hausergrouppr.com
Think Tank PR + Marketing
- Where they are. 2745 Locust Street, St. Louis — city proper
- Size. Not published.
- What they do. Describes itself first as “an award-winning marketing and advertising agency”, but public relations is genuinely core — it claims to have been named the best PR firm in St. Louis for nearly a decade.
- Clients they publish. Current logo wall: SSM Health, Maritz, Berkshire Hathaway HomeServices, McKendree University, U.S. Navy, Katie's Pizza & Pasta Osteria.
Their site: thinktankprm.com
Which St. Louis firm covers which sector
Taken from what each firm says it specialises in, in its own words. If your sector is not here, that is useful information too — it usually means the expertise you need is not concentrated in St. Louis and you should be hiring on category rather than geography.
Who we left out, and why
This is the part no other guide publishes, and it is the part worth reading. Each of these appeared on a St. Louis list somewhere — including, in several cases, on our own earlier version of this page.
Two patterns are worth naming, because they will show up on whatever other list you read next. The first is geography drift: a firm with an office in the city, or simply a page targeting the city, gets listed as though it were headquartered there. The second is category drift: advertising agencies, web shops and SEO firms get counted as PR firms because they have a communications page.
The one thing to check before you sign anything
If an agency guarantees placement, you are buying advertising and it will be labelled as such. The language varies — guaranteed publication, our network of publications, a price per placement, a verification package — but it means the same thing. Real earned coverage cannot be guaranteed, because the decision belongs to an editor who does not work for your agency.
This matters beyond the money. A paid placement carries a disclosure, search engines treat it differently from editorial, and the AI systems that increasingly summarise companies weight editorial far more heavily than sponsored content. You can pay for it if you want it, but know which one you are buying.
No firm on this page's excluded list was dropped for selling placements — the ones we found in this city do not advertise it. That is not the same as none of them doing it.
It is worth asking any firm you shortlist, in writing: is any coverage you produce for us paid, sponsored or guaranteed?
The St. Louis outlets a local firm should already know
If a firm is selling you local expertise, these are the names that should come up unprompted. Ask which reporters at each they have placed in the last six months.
How to check any of these firms yourself
The research behind this page took a few hours per city and mostly consisted of opening websites. You can do the same on a shortlist of three in an afternoon.
- Open the client page and check three names against the news. If a listed client was acquired, renamed or shut down, the roster is stale and so is the relationship.
- Look for a date on the case studies. A proof point from five years ago is a proof point about a team that has probably turned over.
- Ask for the last twenty pitches they sent, with the replies. Not the wins — everyone shows the wins. The unanswered ones tell you how they write.
- Ask what proportion of their placements is syndication. One release republished across forty sites is one placement, not forty.
- Ask who does the work. The people in the pitch meeting are frequently not the people on the account.
How this page was built
Candidate firms came from directory listings, local business press and the previous version of this page. Every candidate was then checked against its own website: does the site load, what address does it print, does it describe itself as doing public relations, what does it say it was founded, and which clients does it publish. A firm made the list only if its own site confirmed all of that and put its headquarters in St. Louis.
Nothing here comes from a directory profile. Directories are useful for finding firms and unreliable for facts about them — they carry headcounts and founding years that firms stopped updating years ago.
This list will go stale. Agencies get acquired, rebrand and close. It was accurate in August 2026; if you are reading it much later, open the links before you rely on them.
If you are shortlisting and want a second opinion — Salient PR is a technology PR agency. We are not based in St. Louis and we are not on this list. See how we work or start a conversation.
Every firm on this page was checked against its own website in August 2026. Salient PR published this guide and is not ranked in it.
Related reading
About Salient PR
Salient is a B2B tech PR agency. We help startups become the story — landing tier-one coverage, building executive visibility, and turning attention into pipeline.
Senior team. No hand-offs. Radical transparency. If you’re ready to talk, reach out.
Verified PR firms in St. Louis — what each specialises in, who they currently publish as clients, and how to tell a live roster from a stale one.
