Williamstown, Kansas Demographics & Population 2026
During the 2020–2024 ACS period, Williamstown, Kansas had a total population of 31, the 670th largest community in Kansas. The poverty rate is 0.0%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Only 0.0% of adults have a bachelor's degree, well below the national average of 35.7%.
Williamstown Quick Facts
How Williamstown Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 40 | 31 | -22.5% |
How Williamstown Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 45 | National average: 61
Education
Educational Attainment (Adults 25+)
Williamstown Rankings in Kansas
Explore Kansas Rankings
Other Cities in Jefferson County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Valley Falls | 1,382 | $46,681 | 5.9% | $122,700 |
| Oskaloosa | 1,113 | $83,750 | 5.7% | $183,100 |
| Perry | 1,069 | $82,375 | 7.9% | $174,000 |
| McLouth | 864 | $73,967 | 6.0% | $202,500 |
| Meriden | 716 | $76,667 | 6.1% | $176,400 |
| Nortonville | 715 | $58,571 | 18.6% | $102,000 |
| Ozawkie | 604 | $100,156 | 0.7% | $214,300 |
| Winchester | 417 | $55,833 | 6.1% | $102,400 |
| Grantville | 122 | $65,063 | 0.0% | $212,500 |
Cities Similar to Williamstown
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| South Mound | 31 | N/A | N/A | 0.0% | 29.0% |
| Susank | 31 | $72,500 | N/A | 6.9% | 6.9% |
| Murdock | 32 | N/A | N/A | 26.1% | 68.8% |
| Clayton | 33 | $74,250 | N/A | 10.3% | 18.2% |
| Idana | 33 | N/A | N/A | 54.2% | 0.0% |
A note before these figures: with a population of 31, Williamstown's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.
Population Overview
Williamstown is a small community located in Kansas, within Jefferson County. The total population is 31. It ranks as the 670th most populous out of 721 Census-designated places in Kansas.
Age Demographics
Economy, Income & Housing
The ACS records no residents below the poverty line in Williamstown. In a community this small the estimate rests on very few survey responses, so it should be read as an absence of measurement rather than a measured absence of poverty. The survey records no unemployed residents in Williamstown, which reflects the size of the sample rather than a labor market without joblessness. Every occupied housing unit the survey reached in Williamstown was renter-occupied. At this sample size that indicates no owner-occupied homes were captured rather than that none exist.
Race & Ethnicity
Every resident counted in Williamstown was recorded as White (non-Hispanic). A figure of exactly 100.0% reflects a survey sample too small to capture the community's full composition rather than a precise measurement.
Education
0.0% of residents aged 25 and older hold a bachelor's degree or higher. This is among the lowest rates in the state, which may correlate with employment and income patterns. Nationally, 35.7% of adults hold at least a bachelor's degree. No surveyed resident aged 25 or older reported leaving school before earning a high school diploma, though a rate of exactly 100% reflects the limits of a small sample.
Data Sources & Methodology
All demographic data for Williamstown, Kansas is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Kansas state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 721 Census-designated places in Kansas. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
Free data download: Get all Kansas city and county demographics as CSV. Download Cities CSV | Download Counties CSV
Frequently Asked Questions
What is the population of Williamstown, Kansas?
Williamstown, Kansas has a population of 31 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Williamstown, KS?
The Census Bureau does not publish a reliable median household income estimate for Williamstown — the community is too small for the ACS sample. The national median is $80,734.
What is the poverty rate in Williamstown, KS?
The ACS sample for Williamstown recorded no residents below the federal poverty line. Because the community is small, this indicates that the survey did not capture poverty here rather than that no poverty exists — the estimate carries a wide margin of error.
What is the racial makeup of Williamstown, Kansas?
Williamstown's population is 100.0% White, 0.0% Black, 0.0% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Williamstown, KS?
The Census Bureau does not publish a reliable median home value estimate for Williamstown — there are too few owner-occupied homes in the ACS sample. The national median is $332,700.
How educated is Williamstown, Kansas?
0.0% of adults (25+) in Williamstown hold a bachelor's degree or higher, and 0.0% hold a graduate or professional degree.