HomeIllinoisSangamon CountyWilliamsville village
Williamsville village, Illinois: commercial real estate data.
Williamsville village is a Census village of 1,314 people across 1.55 square miles of land, in Sangamon County. Median household income is $106,731, 88.1 percent of occupied homes are owned.
64 sourced place values · tier FULL · 8 sections · underlined figures are computed by MMCG Analytics, not published by the agency
Williamsville
What Williamsville is
- Census place typevillage
- Land area1.55 sq mi
- Water area0.03 sq mi
- Population per square mile of land849 plus or minus 203
- County holding the largest share of its areaSangamon County, 100.0 percent
US Census Bureau, cartographic boundary file, places, 2024 vintage. US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Williamsville
How many people live in Williamsville
- Population1,314 plus or minus 315
- Median age43.4
- Population under 18342 plus or minus 88
- Share under 1826.0 percent
- Population 65 and over237 plus or minus 80
- Share 65 and over18.0 percent plus or minus 4.3
- Households530 plus or minus 126
- Family households390 plus or minus 101
- Share of households that are families73.6 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Williamsville
Income and work in Williamsville
- Median household income$106,731
- Per capita income$49,846
- Civilian labor force680 plus or minus 162
- Employed673 plus or minus 159
- Unemployed7 plus or minus 9
- Unemployment rate1.0 percent plus or minus 1.3
- Adults 25 and over891 plus or minus 211
- Adults 25 and over with a high school diploma or higher92.0 percent plus or minus 26.6
- Adults 25 and over with a bachelor degree or higher45.2 percent
- Adults 25 and over with a graduate degree16.0 percent plus or minus 4.3
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Williamsville
Housing in Williamsville
- Housing units542 plus or minus 127
- Occupied units530 plus or minus 126
- Vacant units12 plus or minus 16
- Vacancy rate2.2 percent plus or minus 2.9
- Owner occupied467 plus or minus 117
- Renter occupied63 plus or minus 36
- Ownership rate88.1 percent
- Median owner-occupied home value$199,300
- Median gross rent, monthly$943 plus or minus $204
- Annual rent as a share of median income10.6 percent plus or minus 2.9
- Single family units510 plus or minus 117
- Share single family94.1 percent plus or minus 30.9
- Units in buildings of two or more30 plus or minus 24
- Share in buildings of two or more5.5 percent plus or minus 4.3
- Mobile homes0
- Median year structure built1976
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Williamsville
How Williamsville gets to work
- Workers 16 and over who commute542 plus or minus 143
- Commuting under 15 minutes114 plus or minus 54
- Share commuting under 15 minutes21.0 percent plus or minus 8.2
- Commuting 30 minutes or more139 plus or minus 49
- Share commuting 30 minutes or more25.6 percent plus or minus 6.1
- Drove alone76.9 percent
- Carpooled5.6 percent plus or minus 3.8
- Public transport0.0 percent
- Walked0.5 percent plus or minus 0.8
- Worked from home15.8 percent plus or minus 4.7
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Williamsville
SBA loans in Williamsville (504)
- Approvals1
- Gross approval$254,000
- Average approval$254,000
- Median approval$254,000
- Largest approval$254,000
- Jobs supported1
- Loans with a final outcome0
- Charged off0
- Median term300 months
- Distinct CDCs1
US Small Business Administration, 504 FOIA release, FY2010 to FY2026 year to date, as of 2026-06-30.
Williamsville
Flood risk in Williamsville
- Listed NFIP communities1
- Of those, participating1
- NFIP community number171041
- Currently effective map date08/02/07
This community carries no Community Rating System class, so no CRS premium discount applies to it.
FEMA, National Flood Insurance Program Community Status Book, Community Status Book, as retrieved.
Sangamon County, not Williamsville
Sangamon County context, not Williamsville figures
These are Sangamon County figures. There is no place level equivalent published for any of them, so they are shown as the county backdrop and never as Williamsville measurements.
- Establishments in Sangamon County4,925
- Employment at those establishments, Sangamon County80,005
- Covered employment, Sangamon County134,376
- Average annual pay, Sangamon County$69,350
- Average weekly wage, Sangamon County$1,334
- Housing units permitted, Sangamon County191
- Of those, single family, Sangamon County123
- County product, 2024, Sangamon County$15,668,703,000
- County product change over the prior year, Sangamon County7.0 percent
- Average income of an arriving household, Sangamon County$58,644
Every figure in this section is published for Sangamon County as a whole and is not a measurement of Williamsville. It is here because a county backdrop is what a credit committee reads a place against, and it is labelled so that it can never be quoted as the place's own.
US Census Bureau, County Business Patterns, 2023. US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages. US Census Bureau, Building Permits Survey, 2024 annual. US Bureau of Economic Analysis, Regional, table CAGDP2, CAGDP2, through 2024. US Internal Revenue Service, Statistics of Income county migration flows, 2021 to 2022 filing years.
Coverage
What this page does not hold.
Every item below could be filled with a plausible figure. None of them is. On a page a lender may read, a number that cannot be traced is worse than an absence, so the absences are named.
- Parcel level detail, zoning and flood zone at an address are resolved in the platform, not on this page.
SBA figures count approvals to borrowers whose address is in the place. They are not approvals for projects inside the place boundary: the tape records a borrower city and a project county, and those can differ.
Common questions
Williamsville questions, answered from the record.
How many people live in Williamsville, Illinois?
1,314, in 530 households. Williamsville village covers 1.55 square miles of land, which is 849 people per square mile. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
What county is Williamsville in?
Sangamon County, which holds 100.0 percent of the place by area. Source: US Census Bureau, cartographic boundary file, places, 2024 vintage.
What is the median household income in Williamsville?
$106,731. The median owner-occupied home is valued at $199,300. Median gross rent is $943 per month. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Is Williamsville in the National Flood Insurance Program?
Yes. Williamsville appears in the FEMA Community Status Book as community 171041, with no Community Rating System class, so no CRS discount applies. Whether a specific parcel sits in a mapped special flood hazard area is an address level question the platform answers.
Are the county figures on this page Williamsville figures?
No, and they are labelled so. County Business Patterns, QCEW, the Building Permits Survey, BEA product and IRS migration are published for Sangamon County as a whole and there is no place level equivalent. They appear in one clearly marked section as context and are never presented as measurements of Williamsville.
Is zoning published for Williamsville?
Not yet. The zoning layer is in build. Nothing on this page presents parcel level zoning.