HomeTennesseeWilliamson County
Williamson County, Tennessee: commercial real estate data.
Williamson County, Tennessee had an estimated 269,136 residents on July 1, 2024, up 8.6 percent since the 2020 census base of 247,777, across 583 square miles. County output reached $38.78 bn in 2024, 8,707 establishments operate here, and the SBA record carries 452 7(a) approvals worth $271.0 m since FY2020.
Underlined figures are computed by MMCG Analytics, not published by the agency.
Williamson County
How many people live in Williamson County
- Population, American Community Survey 2020-2024260,351
- Households92,214
- Average household size2.82
- Median household income$135,594
- Median age40.4
- Median gross rent$1,969 per month
- Median owner-occupied home value$751,900
- Home value to household income5.5 times
- Annual rent as a share of median income17.4 percent
- Adults 25 and over with a bachelor degree or higher62.7 percent
- Adults 25 and over with a graduate degree24.0 percent
- Adults 25 and over172,103
- Population under 1867,203
- Share under 1825.8 percent
- Population 65 and over38,404
- Share 65 and over14.8 percent
- Working age population, 18 to 64154,744
- Civilian labor force134,412
- Unemployment rate2.4 percent
- Labor force participation, adults 18 and over69.6 percent
- Rank by population among Tennessee counties6th of 95
- Rank by population among US county-equivalents, Puerto Rico included277th of 3,222
Williamson County is the 6th largest of 95 Tennessee counties by population. A median home costs 5.5 times median household income, which is severely unaffordable by national standards. Residents under 18 outnumber those 65 and over, at 25.8 percent against 14.8 percent, a household formation profile rather than a retirement one.
US Census Bureau, American Community Survey 5-Year Estimates, 2020-2024 5-year.
Williamson County
Is Williamson County's population growing?
- Population, July 1, 2024269,136
- Census 2020 base population247,777
- Population change since the 2020 census base8.62 percent
- Population change, 2023 to 20243,824
- Births, 20242,368
- Deaths, 20241,560
- Natural change, 2024808
- Net domestic migration, 20241,745
- Net international migration, 20241,291
- Total net migration, 20243,036
- Cumulative net domestic migration, 2021 to 202413,584
- Rank by growth among US county-equivalents200th of 3,144
The county has grown 8.62 percent since the 2020 census base. The population grew in 2024 from both sources: births exceeded deaths and more people moved in than left.
US Census Bureau, Population Estimates Program, Vintage 2024, Vintage 2024, estimates 2020 to 2024.
Williamson County
Where are people moving to Williamson County from?
- Tax returns filed by households arriving9,832
- People arriving, from those returns20,211
- Tax returns filed by households leaving8,787
- Net household movement1,045
- Adjusted gross income arriving$1.99 bn
- Net adjusted gross income movement$752.5 m
- Average income of an arriving household$202,214
- Average income of a leaving household$140,625
- Largest single originDavidson County (2,328 households)
- Largest single destinationDavidson County (1,934 households)
| Origin | Households | People | Adjusted gross income |
|---|---|---|---|
| Davidson County | 2,328 | 4,438 | $384.5 m |
| Maury County | 517 | 1,004 | $39.9 m |
| Rutherford County | 347 | 635 | $31.8 m |
| Los Angeles County | 312 | 730 | $101.2 m |
| Orange County | 304 | 789 | $115.7 m |
| Cook County | 134 | 288 | $43.2 m |
| San Diego County | 133 | 380 | $42.6 m |
| Wilson County | 129 | 283 | $15.7 m |
Households arriving report $61,589 more average income than households leaving, so the migration is raising local spending power rather than just moving it around. The largest single source of arrivals is Davidson County, which is the catchment a retail or multifamily study should look at first.
US Internal Revenue Service, Statistics of Income county migration flows, 2021 to 2022 filing years.
Williamson County
What is the Williamson County economy?
- County GDP, 2024$38.78 bn
- County GDP, 2023$37.19 bn
- GDP change, 2023 to 20244.3 percent
- GDP change over five years50.0 percent
- Rank by GDP among the Tennessee areas BEA publishes4th of 95
- Rank by GDP among the US county areas BEA publishes154th of 3,127
- GDP per resident$148,936
Output grew 4.3 percent in the latest year and 50.0 percent over five, which is the trend line a lender will read behind any single year figure.
US Bureau of Economic Analysis, Regional, table CAGDP2, CAGDP2, through 2024.
Williamson County
Employment by industry in Williamson County
- Covered employment, annual average149,366
- Establishments reporting14,651
- Average annual pay$87,286
- Average weekly wage$1,679
- Health care and social assistance, employment17,542
- Health care and social assistance, average annual pay$73,196
- Retail trade, employment17,039
- Retail trade, average annual pay$47,633
- Professional, scientific and technical services, employment15,210
- Professional, scientific and technical services, average annual pay$117,175
- Accommodation and food services, employment14,670
- Accommodation and food services, average annual pay$30,610
- Finance and insurance, employment11,493
- Administrative and support and waste management services, employment10,213
| Sector | Employment | Establishments | Average annual pay |
|---|---|---|---|
| Health care and social assistance | 17,542 | 1,353 | $73,196 |
| Retail trade | 17,039 | 1,024 | $47,633 |
| Professional, scientific and technical services | 15,210 | 3,022 | $117,175 |
| Accommodation and food services | 14,670 | 713 | $30,610 |
| Finance and insurance | 11,493 | 1,252 | $136,978 |
| Administrative and support and waste management services | 10,213 | 939 | $79,609 |
| Management of companies and enterprises | 9,076 | 207 | $163,017 |
| Construction | 8,963 | 906 | $91,500 |
Health care and social assistance is the largest private sector at 17,542 jobs, 11.7 percent of covered employment.
US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages.
Williamson County
How many businesses are in Williamson County?
- Establishments, all industries8,707
- Employment at those establishments149,544
- Annual payroll$11.71 bn
- Establishments per 1,000 residents33.4
These are counts of establishments physically operating in the county, not listings, so they are the supply side a feasibility study measures demand against. County Business Patterns counts private establishments with paid employees in March 2023, while the Quarterly Census of Employment and Wages above counts every unemployment-insured employer, public ones included, as a 2024 annual average, so the two establishment and employment counts differ.
US Census Bureau, County Business Patterns, 2023.
Williamson County
Building permits in Williamson County
- Housing units authorized by permit, 20241,994
- Declared construction value permitted$1.13 bn
- Single family units authorized1,357
- Multifamily units authorized637
- Multifamily share of units31.9 percent
- Average declared value per unit$566,465
- Units authorized per 1,000 households21.6
Single-family homes are 68.1 percent of units authorized, so the pipeline is predominantly single-family.
US Census Bureau, Building Permits Survey, 2024 annual.
Williamson County
SBA loans in Williamson County (7(a) and 504)
- 7(a) approvals recorded452
- 7(a) gross approval dollars$271.0 m
- Average 7(a) approval$599,520
- Median 7(a) approval$228,000
- 10th percentile approval$40,000
- 90th percentile approval$1,595,270
- Largest single approval$5,000,000
- Jobs reported supported, 7(a)5,519
- Jobs per approval12.2
- Distinct 7(a) lenders active77
- Distinct industries receiving approvals156
- Median 7(a) term120 months
- Share of loans on real estate terms, 240 months or longer7.7 percent
- Loans on real estate terms35
- Loans on working capital terms, 120 months or shorter369
- Franchise loans123
- Franchise share of approvals27.2 percent
- Leading industry by approval countLimited-Service Restaurants (31)
- Most active lenderThe Huntington National Bank (66)
- 504 approvals recorded16
- 504 gross approval dollars$21.2 m
- Average 504 approval$1,324,438
- Median 504 approval$809,000
- Distinct CDCs active3
- 504 jobs per approval9.4
- 504 jobs per million dollars approved7.1
- Most active CDCMid-Cumberland Area Development Corporation (8)
- Combined SBA approval dollars, 7(a) FY2020 to FY2026 and 504 FY2010 to FY2026$292.2 m
The average approval of $599,520 sits well above the median of $228,000, pulled up by a few larger deals, so the median is the better guide to what a typical borrower here gets. Only 7.7 percent of approvals run on real estate terms, so SBA credit here is mostly working capital and equipment rather than property acquisition.
US Small Business Administration, 7(a) FOIA release, FY2020 to FY2026 year to date, as of 2026-06-30. US Small Business Administration, 504 FOIA release, FY2010 to FY2026 year to date, as of 2026-06-30.
Williamson County
SBA loan default and charge-off rates in Williamson County
Do SBA loans in Williamson County get paid back?
- Loans with a final outcome recorded99
- Paid in full93
- Charged off6
- Charge-off rate on resolved loans6.1 percent
- Status: Paid in full93
- Status: Cancelled52
- Status: Exempt from disclosure278
- Status: Charged off6
- Status: Committed, not yet disbursed23
Of the 99 loans that have reached a final outcome, 6.1 percent were charged off. This is computed only over resolved loans, because a loan still running has not yet succeeded or failed and counting it either way would be wrong.
Compare against the national and state SBA charge-off rates, computed the same way over resolved loans only.
US Small Business Administration, 7(a) FOIA release, FY2020 to FY2026 year to date, as of 2026-06-30.
Williamson County
SBA lending by place in Williamson County
- Borrower cities with recorded lending10
- Franklin, approvals252
- Brentwood, approvals90
- Nolensville, approvals36
- Spring Hill, approvals27
- Thompson's Station, approvals19
- Fairview, approvals15
| Borrower city | Approvals | Gross approval dollars |
|---|---|---|
| Franklin | 252 | $148,924,600 |
| Brentwood | 90 | $51,917,200 |
| Nolensville | 36 | $18,791,100 |
| Spring Hill | 27 | $12,111,600 |
| Thompson's Station | 19 | $10,357,400 |
| Fairview | 15 | $20,545,900 |
| College Grove | 6 | $1,345,500 |
| Arrington | 5 | $3,570,700 |
| 2 other borrower cities | 2 | $3,419,000 |
Franklin accounts for 252 approvals against 90 in Brentwood. County level figures average over that gap, which is why a site decision is made at the submarket rather than the county.
US Small Business Administration, 7(a) FOIA release, FY2020 to FY2026 year to date, as of 2026-06-30.
Williamson County
How large is Williamson County?
- Land area583 sq mi
- Rank by land area among Tennessee counties16th of 95
- Width, east to west33.7 mi
- Height, north to south23.9 mi
- Geographies sharing a boundary7
- Residents per square mile of land447
- Establishments per square mile14.93
US Census Bureau county boundary geometry, TIGER, adjacency computed from shared boundary vertices, TIGER county boundaries. US Census Bureau, American Community Survey 5-Year Estimates, 2020-2024 5-year. US Census Bureau, County Business Patterns, 2023.
Williamson County
Flood risk in Williamson County
- Participation of the county's own NFIP community Williamson County, unincorporated areasParticipating, community 470204
- Community Rating System class of the county's own communityClass 7
- Communities in the county in the NFIP Community Status Book7
- Of those, participating in the NFIP7
- NFIP participation rate100.0 percent
- Best Community Rating System class in the county A lower CRS class is a larger flood insurance premium discount.Class 7
- Communities carrying a CRS class2
- Radon levels in Williamson County, EPA zone predicted average indoor radon screening level greater than 4 pCi/LZone 1
The county's own community in the status book, unincorporated Williamson County (community 470204), participates in the National Flood Insurance Program and carries Community Rating System class 7, a flood insurance premium discount for policies written there. The EPA places Williamson County in radon zone 1, a predicted average indoor radon screening level greater than 4 pCi/L. The zone is a screening prediction for the county and does not substitute for a test at an address. The best Community Rating System class among the county's communities is 7, which carries a flood insurance premium discount for policies written in that community. 100.0 percent of the county's listed communities participate in the National Flood Insurance Program, per Federal Emergency Management Agency, NFIP Community Status Book (OpenFEMA), as of 2026-09-26.
Federal Emergency Management Agency, NFIP Community Status Book (OpenFEMA), as of 2026-09-26. US EPA, Map of Radon Zones, county spreadsheet, 2024-05 publication, EPA 402/A-16/001.
Coverage
What this page does not hold.
Traffic counts, zoning and the flood zone at an address are not on this page; they resolve at the address in the platform. How this page was built →
Feasibility studies
When a Williamson County site needs a document a lender will accept.
The same data layer behind this page is the one the studies are written from. A study for a Williamson County site starts with the figures you are reading, carrying the same source and period into the credit file.
- Population, American Community Survey 2020-2024260,351
- Households92,214
- Average household size2.82
- Median household income$135,594
- Median age40.4
Common questions
Williamson County questions, answered from the record.
How many people live in Williamson County, Tennessee?
The Census Bureau estimates 269,136 residents on July 1, 2024 (US Census Bureau, Population Estimates Program, Vintage 2024). The American Community Survey 2020-2024 five-year estimate is 260,351, in 92,214 households, ranking 6th of 95 Tennessee counties. Source: US Census Bureau, American Community Survey 5-Year Estimates, 2020-2024 5-year.
Is Williamson County's population growing?
The population has grown 8.62 percent since the 2020 census base of 247,777, to 269,136 on July 1, 2024. In 2024 there were 2,368 births against 1,560 deaths, with net migration of 3,036. Source: US Census Bureau, Population Estimates Program, Vintage 2024, Vintage 2024, estimates 2020 to 2024.
What is the median household income in Williamson County?
$135,594. The median owner-occupied home is valued at $751,900, which is 5.5 times income, and median gross rent is $1,969 per month. Source: US Census Bureau, American Community Survey 5-Year Estimates, 2020-2024 5-year.
How many businesses are in Williamson County?
8,707 establishments, employing 149,544 people with an annual payroll of $11.71 bn. These are establishments physically operating in the county, not listings. Source: US Census Bureau, County Business Patterns, 2023.
What is employment by industry in Williamson County?
Health care and social assistance is the largest private sector at 17,542 jobs, 11.7 percent of covered employment. Covered employment averages 149,366 jobs at an average annual pay of $87,286, or $1,679 a week. Source: US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages.
How much SBA lending happens in Williamson County?
452 7(a) approvals totaling $271.0 m since FY2020, across 77 lenders, with a median approval of $228,000, plus 16 504 approvals worth $21.2 m since FY2010. These are approvals recorded in the release, not loans disbursed.
Do SBA loans in Williamson County get paid back?
Of the 99 loans that have reached a final outcome, 93 were paid in full and 6 charged off, a charge-off rate of 6.1 percent. Loans still running are excluded, because they have not yet succeeded or failed.
How many building permits were issued in Williamson County?
1,994 housing units were authorized by permit in 2024, with a declared construction value of $1.13 bn. Multifamily was 31.9 percent of units. Source: US Census Bureau, Building Permits Survey, 2024 annual.
What is the radon zone for Williamson County?
Zone 1, a predicted average indoor radon screening level greater than 4 pCi/L. Source: US EPA, Map of Radon Zones, county spreadsheet, 2024-05 publication, EPA 402/A-16/001.
Where do people moving to Williamson County come from?
The largest single origin is Davidson County, with 2,328 households. Arriving households report an average income of $202,214 against $140,625 for those leaving. Source: US Internal Revenue Service, Statistics of Income county migration flows, 2021 to 2022 filing years.
Are traffic counts available for Williamson County on this page?
No. Annual average daily traffic resolves in the platform rather than in this dataset, so no AADT figure is printed here. It is a gap we know about rather than a figure we estimated.
Is zoning published for Williamson County?
No. Nothing on this page presents parcel level zoning, and where a statutory framework applies it is marked as the statewide frame, to be confirmed locally.
Williamson County
Cities and places in Williamson.
6 Census places lie wholly or partly in Williamson County. All 6 carry enough published place level data for a page of their own and are linked.
| Place | Type | Population | SBA 7(a) approvals, projects in this county | Lies in |
|---|---|---|---|---|
| Franklin | city | 87,133 | 252 | Wholly in this county |
| Spring Hill | city | 55,765 | 27 | 35.7 percent here, 64.3 percent Maury County |
| Brentwood | city | 45,556 | 90 | Wholly in this county |
| Nolensville | town | 15,074 | 36 | Wholly in this county |
| Fairview | city | 10,009 | 15 | Wholly in this county |
| Thompson's Station | town | 8,294 | 19 | Wholly in this county |
A further 13 of the county's 452 SBA 7(a) approvals are to borrowers in cities that match no Census place in Williamson County, the largest being College Grove (6), Arrington (5), Nashville (1). Those are postal cities, unincorporated areas and cities outside the county, so no place row claims them; they are counted in the county total above.
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