Population272,061 (2025 est.)
Historic Towns Along a Winding River System
Williamson County, TennesseeWilliamson County brings together Franklin, Brentwood, Fairview, and smaller communities within the Nashville metropolitan region. The Harpeth and Little Harpeth rivers form its principal stream system. Nineteenth-century agriculture included tobacco, hemp, horses, and cattle, adding context to a county whose present communities have grown in different ways. The U.S. Census Bureau estimated 272,061 residents in Williamson County, Tennessee, on July 1, 2025.
Williamson County at a Glance
Population272,061 (2025 est.)
County SeatFranklin
Largest CityFranklin
Established1799
ZIP CodesSee postal resources
Total Area, Including Water584 sq mi (total)
Major RoutesSee transportation resources
Area CodesVaries by community
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Discover Williamson County
Williamson County
Williamson County was established in 1799 and named for Hugh Williamson, a signer of the United States Constitution. Franklin became its county seat. Nineteenth-century agriculture included tobacco, hemp, horses, and cattle, placing the area within the wider agricultural history of Middle Tennessee. Later metropolitan growth connected the county more closely with Nashville. That development added new community patterns without erasing the separate identities of Franklin, Brentwood, Fairview, and the county’s smaller towns.
Franklin, Brentwood, Fairview, and communities such as Nolensville and Thompson’s Station offer different starting points within Williamson County. The Harpeth and Little Harpeth rivers provide geographic connections through the landscape. A local plan benefits from selecting a particular town rather than treating the county as a uniform part of greater Nashville. Exploring more than one community helps reveal how the county’s agricultural background and metropolitan setting overlap in different ways.
What Shapes Us
Local Character
Williamson County brings together Franklin, Brentwood, Fairview, and smaller communities within the Nashville metropolitan region. The Harpeth and Little Harpeth rivers form its principal stream system.
Community History
Williamson County was established in 1799 and named for Hugh Williamson, a signer of the United States Constitution. Franklin became its county seat.
Around the County
Franklin, Brentwood, Fairview, and communities such as Nolensville and Thompson’s Station offer different starting points within Williamson County. The Harpeth and Little Harpeth rivers provide geographic connections through the landscape.
Distinct towns share a winding river-country setting.
A Closer Look
Williamson County
Places and perspectives from Williamson County
Williamson County headlines via Google News
Congressional District 9 includes Williamson County: Impact of redistricting on voters - WZTV
Congressional District 9 includes Williamson County: Impact of redistricting on voters WZTV
Read the Story Oct 16, 2026 • 2 min read
Around Williamson County
Stories from every corner of Williamson County.
Congressional District 9 includes Williamson County: Impact of redistricting on voters - WZTV
Congressional District 9 includes Williamson County: Impact of redistricting on voters WZTV
Oct 16, 2026 • 2 min read
Williamson County clinic offers stem cell therapy for pain, joint issues - WSMV
Williamson County clinic offers stem cell therapy for pain, joint issues WSMV
Oct 16, 2026 • 2 min read
Health Scores: Williamson County for October 14, 2026 - Williamson Source
Health Scores: Williamson County for October 14, 2026 Williamson Source
Oct 14, 2026 • 2 min read
Election 2026: Early voting for Tennessee’s November 3 general election is underway - WSMV
Election 2026: Early voting for Tennessee’s November 3 general election is underway WSMV
Oct 14, 2026 • 2 min read
Early voting starts in Williamson County: What to know - The Tennessean
Early voting starts in Williamson County: What to know The Tennessean
Oct 14, 2026 • 2 min read
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Support the businesses that help make our communities thrive. From family-owned shops and restaurants to trusted local services, discover businesses worth visiting throughout the county.
County Resources
Find the Right Local Connection
Start with the organization responsible for the service you need. Follow its official link for current requirements, office locations and availability.
Government
Schools
Public school contacts
Selected local schools from the NCES 2024-2025 directory. Contact the school or district to confirm enrollment, attendance boundaries and current services; this is not a complete school list.
Franklin Elementary – Elementary; grades PK-04. 1501 Figuers DR, Franklin, TN 37064. 615-794-1187.
Arrington Elementary School – Elementary; grades PK-05. 6280 Cox RD, Arrington, TN 37014. 615-472-5420.
Freedom Intermediate – Middle; grades 05-06. 840 Glass LN, Franklin, TN 37064. 615-790-4718.
Crockett Elementary – Elementary; grades PK-05. 9019 Crockett RD, Brentwood, TN 37027. 615-472-4340.
Brentwood High School – High; grades 09-12. 5304 Murray LN, Brentwood, TN 37027. 615-472-4220.
College Grove Elementary – Elementary; grades KG-05. 6668 Arno-College Grove, College Grove, TN 37046. 615-472-4320.
Fairview Elementary – Elementary; grades PK-05. 2640 Fairview W BLVD, Fairview, TN 37062. 615-472-4380.
Hospitals
Local hospital contacts
Facility contacts from the CMS Hospital General Information directory, updated July 22, 2026. Contact the facility directly to confirm current services and appointment arrangements.
Williamson Medical Center – Acute Care Hospitals. 4321 Carothers Parkway, Franklin, TN 37067. 615-435-5000.
Rolling Hills Psychiatric Hospital – Psychiatric. 2014 Quail Hollow Circle, Franklin, TN 37067. 615-226-4930.
Public Safety
Start with the county’s public information and department directory for local contacts and service information.
Emergency Services
Start with the county’s public information and department directory for local contacts and service information.
Parks & Public Lands
Start with the county’s public information and department directory for local contacts and service information.
Trails
Start with the county’s public information and department directory for local contacts and service information.
Utilities
Start with the county’s public information and department directory for local contacts and service information.
Libraries
Local library contacts
Locations and public phone numbers are from the IMLS FY2024 Public Libraries Survey. Call the branch to confirm current hours and services before visiting.
The John P. Holt Brentwood Library – 8109 Concord Road, Brentwood, TN 37027. 615-371-0090.
Williamson County Public Library – 1314 Columbia Ave, Franklin, TN 37064. 615-595-1240.
College Grove Community Library – 8607 Horton Highway, College Grove, TN 37046. 615-368-3222.
Fairview Public Library – 2240 Fairview Blvd, Fairview, TN 37062. 615-224-6087.
Nolensville Public Library – 915 Oldham Drive, Nolensville, TN 37135. 615-776-5490.
Bethesda Public Library – 4905 Bethesda Road, Thompson`S Station, TN 37179. 615-790-1887.
Leiper`S Fork Public Library – 5333 Old Highway 96, Franklin, TN 37064. 615-794-7019.
Courts
Start with the county’s public information and department directory for local contacts and service information.
DMV
Tennessee — Title and Registration
Tennessee — Renewing Your License or Identification
Transportation
Start with the county’s public information and department directory for local contacts and service information.
Postal Services
USPS location finder — Search by street address, city or ZIP Code for nearby post offices, collection boxes and available services.
USPS ZIP Code lookup — Find the mailing ZIP Code for a specific street address.
USPS Hold Mail — Arrange a temporary mail hold and review identity-verification requirements.
USPS change of address and forwarding — Review forwarding options and submit an address-change request through USPS.
USPS package pickup — Check pickup availability for your address and schedule eligible shipments.
Veterans
National services available to local residents
VA accredited representatives — Find help with VA claims and benefit applications.
VA health care applications — Review application options and supporting information.
VA disability claims — Find the official steps for submitting a disability claim.
GI Bill and education benefits — Review how to apply for VA education benefits.
Veteran career and employment support — Explore VA employment, training and career assistance.
Employment
1 County Employment Opportunities
National services available to local residents
USAJOBS federal employment — Search federal openings by location and occupation.
Apprenticeship Finder — Search apprenticeship opportunities by location and occupation.
My Next Move career exploration — Explore occupations, industries and career interests.
Government job-training resources — Find routes to state training programs and support for different job seekers.
Unemployment benefit guidance — Find your state program and its application and eligibility information.
Get to Know Williamson County
Useful answers for residents, visitors and anyone planning their next step.
Local Questions
Williamson County Questions, Answered
Explore practical details about the county and the organizations that serve it.
272,061 (July 1, 2025 Census estimate). This is a dated Census Bureau estimate, rather than a live resident count.
584.028 square miles, including water (2020 Census geography). The total combines land and water area.
Start with 1 County Employment Opportunities, linked from the government source used for this county. Check that page for current details before visiting or submitting a request.
Start with County Clerk, linked from the government source used for this county. Check that page for current details before visiting or submitting a request.
Start with these official Tennessee resources: Address Change; Title and Registration; Renewing Your License or Identification. Choose the page for the service you need, then check its office or online instructions before making a trip. These links cover state services; they do not establish that every transaction is available at a county office.
Use USPS ZIP Code Lookup for the mailing ZIP Code of a specific street address. Use the USPS location finder to search for nearby postal facilities and available services. An address lookup is more useful for mailing than assuming the entire county shares one ZIP Code.
The VA explains how to find and appoint an accredited representative for benefit claims. Contact a representative to confirm availability before appointing them. For education benefits, use the GI Bill application guidance. These are national VA services available to eligible local residents, rather than a listing of county offices.
Williamson County was established in 1799 and named for Hugh Williamson, a signer of the United States Constitution. Franklin became its county seat. Nineteenth-century agriculture included tobacco, hemp, horses, and cattle, placing the area within the wider agricultural history of Middle Tennessee. Later metropolitan growth connected the county more closely with Nashville. That development added new community patterns without erasing the separate identities of Franklin, Brentwood, Fairview, and the county’s smaller towns.
Franklin, Brentwood, Fairview, and communities such as Nolensville and Thompson’s Station offer different starting points within Williamson County. The Harpeth and Little Harpeth rivers provide geographic connections through the landscape. A local plan benefits from selecting a particular town rather than treating the county as a uniform part of greater Nashville. Exploring more than one community helps reveal how the county’s agricultural background and metropolitan setting overlap in different ways.
The 2020 Census geography figures record 582.863 square miles of land and 1.165 square miles of water in Williamson County. The county’s total area includes both. These are geographic measurements for that Census vintage, not a measurement of current water levels or public recreation access.
In the Census Bureau’s 2025 estimate series, Williamson County had an estimated 249,614 residents on July 1, 2020, and 272,061 on July 1, 2025. Over that interval, the estimated population increased by 22,447 residents, or about 9.0%. Both figures come from the same estimate vintage, which revises earlier years for a consistent comparison.
Shop - Dine - Discover
Meet Local Businesses
Support the businesses that help make our communities thrive. From family-owned shops and restaurants to trusted local services, discover businesses worth visiting throughout the county.
My Local Guide
Local Businesses
Businesses Serving Williamson CountyExplore the businesses listed for this county.
Businesses serving Williamson County
Additional county facts: county overview and references.
Connect with local businesses.Williamson County