David Barnhart’s origin story contains a car, three nights, and an excess of The West Wing. He had come to Washington from a small-town dairy farm, close enough to K Street to see the bright lights and still far enough from a bed that he slept in his vehicle. Years later, when he named his agency Locust Street Group, the point was not really the street. It was the fact that nearly every town has one.
Washington influence is usually drawn as a tight little map: Capitol Hill, K Street, the White House. Barnhart’s bet was that this map leaves out the people whose experience gives an argument weight. A policy position spoken by a hired expert sounds like a position. The same point, made by a local doctor, teacher, veteran, shop owner, driver, or firefighter, can sound like evidence.
That became LSG’s business. Founded in 2008, the privately held firm works for corporations, trade associations, and nonprofits that need to change an opinion, protect a reputation, enter a market, survive a regulatory fight, or persuade a community to act. It researches what an audience believes, tests which words travel, finds messengers people recognize, and then coordinates communications, digital media, advocacy, events, and field work around them.
“Small towns all over America have a Locust Street.”The old line that explained the company better than a services menu
First find the truth. Then find who can say it.
Most agencies can produce a message. LSG’s more interesting claim is that message-making, messenger selection, distribution, and measurement belong in the same loop. Its in-house researchers run surveys, focus groups, dial sessions, brand trackers, and creative tests. Strategists turn those findings into a campaign. A nationwide field network recruits third-party groups and local validators. Communications and digital teams give those voices reach. Measurement sends the result back to the researchers.
The menu is broad because the problems are broad: stakeholder engagement, advocacy, strategic insights, community marketing, communications, and digital services. A hospital operator with labor and reputation trouble does not experience those as six tidy disciplines. Nor does an energy coalition introducing carbon capture, a cannabis company navigating state regulation, or a delivery platform whose workers have become part of a political argument. The client buys an integrated campaign, not a tray of agency hors d’oeuvres.
The press release was not the product
Consider the unnamed delivery-app company in LSG’s casebook. Rapid growth had produced regulatory resistance. The easy response would have been a press campaign about innovation. LSG instead mobilized organizers to collect the experiences of the people inside the platform, train them, and prepare them to speak. In three months, the operation gathered nearly 2,000 stories and readied more than 750 messengers.
Or take manufacturing. Working with the National Association of Manufacturers, LSG helped launch “Creators Wanted” and the “State of Manufacturing” tour. The long-term challenge was abstract - improve the industry’s reputation while explaining a projected shortage of 2.1 million workers by 2030. The response was physical. Nearly 100 events brought the issue into communities, engaged thousands of local leaders, and produced more than 500 earned-media hits.
This is what the company actually does: it turns an institutional problem into a sequence of human encounters, while keeping the research and message architecture intact. Its carbon-capture work followed the same shape. LSG tested attitudes, found workable language, then supported a 12-company coalition with local engagement, a campaign site, digital advertising, and earned media. The method is less mysterious than the coordination required to pull it off.
A shorter name for a longer list of capabilities
By 2022, “Locust Street Group” described the origin better than the company. The firm became LSG and called itself an impact agency - an elastic phrase, but a revealing one. Public relations was now joined to brand building, corporate reputation, market research, community marketing, and public affairs. Between 2021 and August 2023, the staff grew from 25 to 54. LSG signed a 21,500-square-foot lease in Washington’s Herald building, almost five times the area of its old Dupont Circle office, while adding people in Houston, Denver, New York, Boston, and later Portland and Louisiana.
Growth creates its own first failure: coordination. When research, paid media, and design teams operate on different cadences, an integrated pitch can dissolve into three sets of status meetings. LSG brought in The Collaborative to configure Asana workflows for research projects, survey tracking, campaigns, and cross-team production. It is a small operational detail, and therefore a useful one. The glamorous promise was integration. The practical prerequisite was getting everyone to see the same work.
The firm also changed its mind about where executive counsel should live. LSG introduced a senior-leadership advisory offer called Vantage. In September 2026, it announced that this work would spin into Beam Strategy Group, a sister company led by recent LSG partners Hayley Zachary and Tara Rush, with Barnhart keeping an ownership stake. The move draws a cleaner line: LSG pursues public affairs and reputation campaigns; Beam advises the executives steering through them.
The useful thing LSG sells is not authenticity. It is the machinery required to find authentic voices without flattening them.
What a client can copy - and what it cannot
The transferable lesson is not “hire a grassroots firm.” It is to decide who must believe you before deciding what you want to say. Research the audience in its own language. Test the messenger as carefully as the message. Give local partners something real to do. Establish a baseline before launch, then measure changes in awareness, consideration, sentiment, leads, applications, or policy outcomes. LSG’s community organizers work to weekly metrics; its researchers build tracking instruments. The romance of storytelling is held to a spreadsheet.
Strong fit
Complex issues with several audiences, visible local consequences, regulatory or reputation risk, and enough time to build credible relationships.
Weak fit
A quick publicity burst, a problem with no credible third-party constituency, a client unwilling to hear disconfirming research, or a campaign whose only acceptable result is immediate.
There are also limits. A local voice is not a decorative testimonial. If the relationship is transactional, audiences notice. Field organizing cannot rescue a policy that harms the very community recruited to defend it. Research cannot make an implausible claim true. And an integrated agency is excessive when the job is simply a press release, a legal interpretation, or a self-serve ad buy. LSG works best when the communications problem is entangled with the business problem.
The next version of Locust Street
In 2026, as the United States marked its 250th anniversary, LSG built “The 250,” a network of 250 storytellers from all 50 states. It paired the network with a national study, “The State of US,” about identity, values, and the emerging electorate. The project is part research product, part national scrapbook, and part demonstration of the firm’s oldest argument: the country looks different when you ask people to describe their own milestones instead of treating them as demographic segments.
Eighteen years after Barnhart founded the business, the company is larger, the disciplines are more numerous, and the office is dramatically bigger. Yet its best idea remains pleasantly provincial. Influence does not begin when an institution finds the perfect sentence. It begins when the right person, on an ordinary street, decides the sentence is worth repeating.