At Sullivan Brill Personal Injury Attorneys, our team is proud to offer dedicated legal representation to the residents of Thornwood, NY, from our nearby Mt. Kisco office. Whether you’ve suffered a serious injury due to a car accident, slip and fall, medical malpractice, construction incident, or any other form of negligence, our experienced attorneys are here to guide you through the legal process with compassion, skill, and a relentless commitment to justice. Thornwood may be a small hamlet, but its tight-knit community deserves powerful advocacy—and we’re here to provide just that.
Thornwood is a hamlet, census-designated place (CDP), and postal area located in the Town of Mount Pleasant in Westchester County, New York. With a population of approximately 3,960 residents as of the 2020 census, Thornwood is a quiet, residential community full of charm, history, and local pride.
Though modest in size—just 1.1 square miles—Thornwood holds a distinct place in the development of Westchester County. It's ideally situated for those who want the balance of suburban tranquility and convenient access to larger cities like White Plains and New York City. The hamlet’s ZIP code is 10594, and its location within the greater Mount Pleasant township places it among other vibrant communities such as Valhalla, Hawthorne, and Pleasantville.
Thornwood’s origins trace back to 1891, when developer Lewis Smadback initiated a successful real estate development that would eventually evolve into what we know as Thornwood today. Originally incorporated as the Village of Sherman Park in 1906 and then renamed Hillside in 1909, the area officially became Thornwood in 1914 when the village was dissolved and reclassified as a hamlet.
The name “Thornwood” may have derived from “Hawthorne’s Woods,” a nod to the neighboring hamlet of Hawthorne, or it could have connections to Thornwood in Glasgow, Scotland—reflecting the immigrant influences common in the area’s early history.
A major part of Thornwood’s development was tied to its marble quarry, which operated near what is now the intersection of Route 141 and Kensico Road, locally known as Four Corners. The quarry, in operation since the mid-1800s, played a significant role in supplying white marble for notable structures, including St. Patrick’s Cathedral in Manhattan. Today, the Town Center shopping mall stands atop the filled-in quarry pit—a transformation emblematic of Thornwood’s shift from industry to suburbia.
Thornwood once had a station on the Harlem Line of the Metro-North Railroad, offering commuters access to Grand Central Terminal in under an hour. However, in the mid-1980s, during the electrification of the Harlem Line north of North White Plains, Thornwood was the only station discontinued. The station structure still exists on Commerce Street, serving as a visual reminder of the hamlet’s connection to New York City’s transit evolution.
Despite the loss of the station, Thornwood remains highly accessible by road, and its proximity to key thoroughfares makes it a convenient base for commuters and families alike.
According to the most recent census data, Thornwood is home to a predominantly family-centered population, with over 70% of households consisting of married couples. The average household size is 3.06, and the average family size is 3.39, indicating a strong presence of children and multigenerational homes. Nearly 29% of residents are under the age of 18, showing that Thornwood is a community where families choose to settle and thrive.
The median household income in Thornwood is $88,971, with a median family income of $98,313, and the per capita income is $36,254. Thornwood maintains a low poverty rate, with only 4% of the population living below the poverty line, making it a stable and economically healthy suburb.
Thornwood is home to the North American headquarters of Carl Zeiss Corporation, a globally recognized name in optics, industrial measurement, and medical technologies. This important employer adds a level of international connectivity and prestige to the local economy.
Religious life has also been a strong influence in Thornwood. The Legion of Christ, a Roman Catholic order, operated the Our Lady of Thornwood Conference, Education, and Training Center, previously housed in a former IBM facility. While the seminary program was moved to Rome in recent years, the center was once a hub for religious education and community activity.
Accidents can happen anywhere—even in a peaceful hamlet like Thornwood. At Sullivan Brill Personal Injury Attorneys, we believe that every injured person deserves access to exceptional legal support, no matter the size of their town. If you or a loved one has been injured due to someone else's negligence, you can count on our experienced legal team to advocate for your rights.
Our Mt. Kisco office is just minutes away, and we proudly serve the people of Thornwood and the surrounding Westchester communities in areas including:
Car accidents
Slip and fall injuries
Workplace and construction injuries
Medical malpractice
Defective products
Wrongful death claims
We offer free consultations and no fees unless we win your case. Our goal is to provide personalized, respectful, and results-driven representation tailored to your individual needs.
Over 20 years of combined legal experience
Deep roots in the Westchester County area
Responsive and compassionate client service
Proven track record of securing favorable settlements and verdicts
Committed to helping Thornwood residents recover and rebuild
At Sullivan Brill, we understand how an unexpected injury can disrupt your life. We're more than just attorneys—we’re advocates, neighbors, and trusted partners in your recovery. Our deep knowledge of Thornwood’s history, geography, and community allows us to represent our clients with a level of familiarity and compassion that larger firms can’t replicate.
If you live in Thornwood, NY, and need the help of a seasoned personal injury lawyer, don’t wait. Contact Sullivan Brill Personal Injury Attorneys in Mt. Kisco today for a free, no-obligation consultation.
Justice starts here—let us fight for what you deserve.
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