Seneca, Nebraska Demographics & Population 2026
During the 2020–2024 ACS period, Seneca, Nebraska had a total population of 45, the 519th largest community in Nebraska, with a median household income of $36,250, which is 53% lower than the state average. The poverty rate is 17.8%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 53% below the state average, indicating significant economic challenges.
- Unemployment rate of 11.1% is notably above the national average.
Seneca Quick Facts
How Seneca 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 | 28 | 45 | +60.7% |
| Median household income | $36,250 | $36,250 | +0.0% |
How Seneca 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: 41 | National average: 61
Education
Educational Attainment (Adults 25+)
Seneca Rankings in Nebraska
Explore Nebraska Rankings
Other Cities in Thomas County
Cities Similar to Seneca
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Crookston | 45 | N/A | $48,200 | 7.5% | 33.3% |
| Enders | 46 | N/A | N/A | 47.8% | 0.0% |
| Newport | 46 | N/A | $50,700 | 5.9% | 15.2% |
| Cornlea | 42 | N/A | $108,300 | 13.8% | 11.9% |
| Reynolds | 41 | N/A | $55,000 | 0.0% | 21.9% |
A note before these figures: with a population of 45, Seneca'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
Seneca is a small community located in Nebraska, within Thomas County. The total population is 45. It ranks as the 519th most populous out of 583 Census-designated places in Nebraska.
Age Demographics
The median age in Seneca is 61.2 years. This is 65% higher than the state median of 37.2 years. 15.6% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.
Economy, Income & Housing
The median household income in Seneca is $36,250. This is 53% lower than the state median of $76,475. It is also 55% lower than the national median of $80,734. The poverty rate stands at 17.8%. This is 68% higher than the state poverty rate of 10.6%. The unemployment rate is 11.1%. This is 267% higher than the state rate of 3.0%. 48.4% of occupied housing units are owner-occupied. This homeownership rate is 27% lower than the state average of 66.5%.
Race & Ethnicity
Seneca has a predominantly White (non-Hispanic) population, comprising 95.6% of all residents.
Education
30.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 13% lower than the state rate of 34.6%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 83.3%.
Data Sources & Methodology
All demographic data for Seneca, Nebraska 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 Nebraska state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 583 Census-designated places in Nebraska. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Seneca, Nebraska?
Seneca, Nebraska has a population of 45 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Seneca, NE?
The median household income in Seneca is $36,250, which is 55% lower than the national median of $80,734.
What is the poverty rate in Seneca, NE?
The poverty rate in Seneca is 17.8%. This means approximately 8 residents live below the federal poverty line.
What is the racial makeup of Seneca, Nebraska?
Seneca's population is 95.6% White, 0.0% Black, 0.0% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Seneca, NE?
The Census Bureau does not publish a reliable median home value estimate for Seneca — there are too few owner-occupied homes in the ACS sample. The national median is $332,700.
How educated is Seneca, Nebraska?
30.0% of adults (25+) in Seneca hold a bachelor's degree or higher, and 6.7% hold a graduate or professional degree.