Part of series
2026 2025 2024 2023 2022 2021 2000 2019 2018
Data updates
Updated annually and as new data becomes available
Get email notifications -->
Media Contact
Neilsberg Research Media Relations
Share this page

Seneca, NE

Census-Designated Place in Thomas County, NE, US
Last updated
Key Indicators
A quick look at key numbers

Population

45
Source: U.S. Census Bureau American Community Survey (ACS) 2020-2024 5-Year Estimates

Median Age

61.2
years ∙ half population younger than 61.2, half older

Diversity Index

Low High
8.4%
chance two random people differ in race and ethnicity

Nativity

0%
foreign-born population
100%Native
0% Foreign-born

Geographic Context

Location, size, and surroundings

About

Seneca is an unincorporated community and census-designated place (CDP) in Thomas County, Nebraska, United States.
Location
Census-Designated Place in Thomas County, NE, US
Co-ordinates
DEC42.043949° N, 100.832055° W
DMS42° 02′ 38.22″ N, 100° 49′ 55.40″ W

Population Density & area

152.5/sq mi (58.82/km²)
Total Area
0.295 sq mi (0.765 km²)
Land Area
0.295 sq mi (0.765 km²) · 100%
Water Area
0 sq mi (0 km²) · 0%

Demographics & Living

Who lives here, how households are formed, and community composition

Population Composition

Key characteristics of the population

Sex Distribution

66.7% male
Male 66.7%
Female 33.3%
males per 100 females
Seneca 200
Thomas County 94.5
Nebraska 101

Nativity

0%
foreign-born population
100%Native
0% Foreign-born
% Foreign-born
Seneca 0%
Thomas County 3%
Nebraska 8%
Age Distribution
How the population is spread across age groups

Median Age

61.2
years ∙ half population younger than 61.2, half older
Seneca
61.2
Thomas County
53.3
Nebraska
37.2

Dependency ratio

Low High
66.7
dependents per 100 working-age adults
Seneca 66.7
Thomas County 100.7
Nebraska 70.1

AGE DISTRIBUTION

Distribution of age group
Median age
Seneca Thomas County Nebraska
Age Group
Children (Under 18) 0% 11.2% 24.5%
Working age (18-64) 60% 49.8% 58.8%
Senior (65+) 40% 39% 16.7%
Dependency ratio
Total dependency ratio 66.7 100.7 70.1
Child dependency ratio 22.4 41.7
Old-age dependency ratio 66.7 78.3 28.4
Racial & Ethnic Composition
Racial and ethnic makeup and how it compares

Race & Ethnicity

White
95.6%
Black
0%
Asian
0%
Hispanic
0%
Other
4.4%
Note: White, Black, and Asian refer to individuals belonging to a single race and not of Hispanic origin. Hispanics may be of any race.

Diversity Index

Low High
8.4%
chance two random people differ in race and ethnicity
Seneca 8.4%
Thomas County 20%
Nebraska 41.3%
Note: The Diversity Index (DI), based on the Blau Index, measures the probability that two randomly selected individuals differ in race and ethnicity. Values range from 0 (no diversity) to 1 (high diversity) and are shown as percentages.

RACIAL & ETHNIC COMPOSITION

Race & Ethnicity
Percentage of Seneca population
Seneca Thomas County Nebraska
Hispanic or Latino 0% 5% 12.7%
Mexican 0% 5% 8.7%
Puerto Rican 0% 0% 0.3%
Cuban 0% 0% 0.4%
Other Hispanic / Latino 0% 0% 3.3%
Not Hispanic or Latino 100% 95% 87.3%
One race 95.6% 91.1% 83.5%
White 95.6% 89.2% 75.3%
Black or African American 0% 2% 4.6%
American Indian and Alaska Native 0% 0% 0.6%
Asian 0% 0% 2.6%
Native Hawaiian and Other Pacific Islander 0% 0% 0%
Some Other Race 0% 0% 0.4%
Two or more races (Multiracial) 4.4% 3.9% 3.8%
Household & Families Composition
Household size, type, and family structure

Household structure

35.5% family
Family 35.5%
Non family 64.5%
% family households
Seneca 35.5%
Thomas County 63.2%
Nebraska 62.7%

Average household size

1.45
persons per household
Seneca
1.45
Thomas County
1.86
Nebraska
2.42

Household & Family COMPOSITION

Households
Percentage of Seneca population
Seneca Thomas County Nebraska
Total households 31 304 797,847
Average houshold size 1.45 1.86 2.42
Family households 11 192 500,016
Average family size 2.09 2.31 3.05
Married couple family 11 175 389,247
Other families 0 17 110,769
Male householder 0 4 35,772
Female householder 0 13 74,997
Non-family households 20 112 297,831
One-person households 20 103 244,781
Male householder 17 52 116,731
Senior (65+) living alone 0 14 33,618
Female householder 3 51 128,050
Senior (65+) living alone 3 29 64,330
Other living arrangements 0 9 53,050

Housing Profile

Housing stock, ownership, rentals, and cost burdens

Total housing units

41
housing units
Seneca 41
Thomas County 357
Nebraska 863,444

Occupancy status

75.6% occupied
Occupied 75.6%
Vacant 24.4%
vacancy rate
Seneca 24.4%
Thomas County 14.8%
Nebraska 7.6%
Housing Characteristics
How the housing supply is structured and used

Types of Housing unit

100%
Single family houses
Single family houses
100%
Apartments in multi-unit structures
0%
Mobile homes
0%
Boat, RV, van, etc
0%

Median Year Built

1971
Half of houses were built before 1971, and half after.
Historic ∙ 1939 or earlier
53.7%
Postwar & mid-century ∙ 1940 - 1969
4.9%
Late 20th century ∙ 1970 - 1999
41.5%
Modern ∙ 2000 or later
0%
Note: Median year built reflects occupied units only; distribution includes all units.

Housing Characteristics

Units, rooms & bedrooms
Physical characteristics of housing units
Seneca Thomas County Nebraska
Rooms per unit
Median rooms 5.3 5.9 6.1
1–3 rooms 4.9% 9.2% 13.2%
4–6 rooms 82.9% 57.9% 43.4%
7+ rooms 12.2% 32.7% 43.2%
Bedrooms
No bedroom / studio 0% 0% 2.5%
1 bedroom 4.9% 9.5% 10.8%
2 bedrooms 46.3% 33.6% 25%
3 bedrooms 41.5% 34.2% 35.6%
4+ bedrooms 7.3% 22.6% 26.2%
At a glance
Median year built 1971 1965 1976
Total housing units 41 357 863,444
Occupancy Profile
Who is inside and how they use it

Homeownership

48.4% owners
Renter-occupied 51.6%
Owner-occupied 48.4%
homeownership rate
Seneca 48.4%
Thomas County 68.1%
Nebraska 66.5%

Average household size

1.93
Owner-occupied
Renter-occupied
owner-occupied average size
Seneca 1.93
Thomas County 1.93
Nebraska 2.6

Housing Characteristics

Occupied unit characteristics
Tenure, crowding, and utilities
Seneca Thomas County Nebraska
Total occupied units 31 304 797,847
Year moved in
2020 or later 6.5% 9.5% 25.8%
2010 to 2019 61.3% 51.3% 39.4%
2000 to 2009 12.9% 21.1% 15.9%
1999 or earlier 19.3% 18.1% 18.9%
Occupants per room
1.00 or fewer 100% 100% 97.9%
1.01 to 1.50 0% 0% 1.5%
1.51 or more 0% 0% 0.7%
Vehicles availability
No vehicles 0% 4.6% 5.4%
1 vehicle 58.1% 17.1% 30.1%
2 vehicles 29% 37.8% 37.7%
3 or more vehicles 12.9% 40.5% 26.8%
House heating fuel used
Gas 87.1% 65.8% 66.2%
Electricity 12.9% 23.7% 31.5%
Solar 0% 0% 0%
Fuel oil, kerosene etc 0% 0% 0.3%
All other fuels 0% 9.9% 1.4%
No fuel used 0% 0.7% 0.4%
Selected characteristics
Lacking complete plumbing 0% 0% 0.3%
Lacking complete kitchen 0% 1.6% 1%
No telephone service available 0% 3.3% 0.9%
Housing Value
What owner-occupied units are worth

Median home value

$—
owner-occupied units
* The Census Bureau did not report a median home value for Seneca due to an insufficient number of sample cases to produce reliable estimates.
Median value(USD)
Seneca
$—
Thomas County
$109,200
Nebraska
$238,600

Housing Cost Burden

50%
of homeowners with a mortgage are cost-burdened
% Cost-Burdened Households
Owners with a mortgage
50%
Owners without a mortgage
18.2%
Renters
—%
Note: Households spending 30% or more of their income on housing costs are considered cost-burdened.

Financial characteristics

Property value and housing costs
Tenure, crowding, and utilities
* The Census Bureau did not publish property value and housing costs for Seneca due to an insufficient number of sample cases to produce reliable estimates.
Seneca Thomas County Nebraska
Property value
Median Value $— $109,200 $238,600
Under $100,000 60% 47.3% 14%
$100,000 - $200,000 0% 17.9% 24.2%
$200,000 - $300,000 0% 15.9% 27.2%
$300,000 - $500,000 26.7% 11.6% 25.1%
$500,000 - $1,000,000 13.3% 3.4% 8.2%
$1,000,000 and more 0% 3.9% 1.3%
Owner-occupied households
With a mortgage 26.7% 23.2% 58.5%
Without a mortgage 73.3% 76.8% 41.5%
Median monthly owner costs
With a mortgage $— $975 $1,736
Without a mortgage $— $482 $677
Gross rent
Median rent $— $638 $1,072

Education Profile

How educated is the community and how education pays off

Adults with a college degree

30%
of adults 25+ with a bachelor's degree or higher
Seneca 30%
Thomas County 28.7%
Nebraska 34.6%

Adults without a high school diploma

16.7%
of adults (25+) without a high school diploma
Seneca 16.7%
Thomas County 8.1%
Nebraska 7.8%
School Enrollment
Who is enrolled in school and at what level

School enrollment

0
population (age 3+) enrolled in school
Nursery / Preschool
—%
K–12
—%
College / Undergraduate
—%
Graduate / Professional
—%

College-going rate (18-24 yr olds)

0%
of 18-24-year-olds in college or graduate school
Seneca
0%
Thomas County
10%
Nebraska
42%

Enrollment & school type

Enrollment levels, college-going rate, and public vs private school split
Population 3+ currently enrolled in a school
* The Census Bureau did not publish enrollment and school type data for Seneca due to an insufficient number of sample cases to produce reliable estimates.
Seneca Thomas County Nebraska
Total enrolled (age 3+) 0 71 516,339
Nursery / preschool —% 5.6% 6.3%
K–12 —% 77.5% 68.4%
Kindergarten —% 0% 4.8%
Elementary: Grades 1–4 —% 40.8% 20.5%
Elementary: Grades 5–8 —% 18.3% 21.4%
High School: Grades 9–12 —% 18.3% 21.7%
College or graduate school —% 16.9% 25.3%
College, undergraduate —% 2.8% 19.2%
Graduate, professional school —% 14.1% 6.1%
College-going rate · 18-24 yr olds 0% 10% 42%
School type
Public school —% 100% 82.7%
Private school —% 0% 17.3%
Education Attainment by Level & Gender
What is the highest level of education completed among adults

Education attainment

30
population 25 years and over
Total adults (25+)
Less than 9th grade
6.7%
9th-12th, no diploma
10%
HS graduate
16.7%
Some college no degree
23.3%
Associates degree
13.3%
Bachelors degree
23.3%
Graduate or professional degree
6.7%

Attainment by gender

Male vs Female
Adults (25+) · Share within each education level
% male · % female
Less than 9th grade
0% · 100%
9th-12th, no diploma
100% · 0%
HS graduate
60% · 40%
Some college no degree
57.1% · 42.9%
Associates degree
0% · 100%
Bachelors degree
71.4% · 28.6%
Graduate or professional degree
0% · 100%

Educational Attainment Overview

Distribution and key education attainment rates for adults (25+)
Highest credential completed · adults 25+
Seneca Thomas County Nebraska
Population (25+) 30 481 1,300,410
Less than 9th grade 6.7% 3.5% 3.8%
9th–12th, no diploma 10% 4.6% 4%
High school diploma or GED 16.7% 28.9% 25%
Some college, no degree 23.3% 13.7% 21.6%
Associate's degree 13.3% 20.6% 11%
Bachelor's degree or higher 30% 28.7% 34.6%
Bachelor's degree 23.3% 22.7% 22.3%
Graduate or professional 6.7% 6% 12.3%
High School or higher 83.3% 91.9% 92.2%
Earnings by education level
percentage as applicable

Median Earnings

$—
Median earnings for adults 25+, by level
* The Census Bureau did not publish median earnings for Seneca due to an insufficient number of sample cases to produce reliable estimates.
Less than HS graduate
$—
HS graduate
$—
Some college or associates
$—
Bachelors degree
$—
Graduate or professional degree
$—

Poverty Rate

22.2%
for ages 25+, with bachelors degree or higher
Less than HS graduate
0%
HS graduate
40%
Some college or associates
36.4%
Bachelors degree or higher
22.2%

Outcomes by Education Level

Earnings and poverty rates across education levels (25+)
Adults 25+
* The Census Bureau did not publish median earnings and poverty rates for Seneca due to an insufficient number of sample cases to produce reliable estimates.
Seneca Thomas County Nebraska
Median earnings
Population 25+, with earnings $— $46,250 $51,569
Less than high school graduate $— $— $37,277
High school graduate (includes equivalency) $— $29,400 $40,830
Some college or associate's degree $— $48,438 $47,062
Bachelor's degree $— $42,500 $62,298
Graduate or professional degree $— $76,250 $78,244
Poverty rates
Less than high school graduate 0% 12.8% 22.1%
High school graduate (includes equivalency) 40% 10.8% 12.8%
Some college or associate's degree 36.4% 10.3% 8%
Bachelor's degree or higher 22.2% 1.4% 3.8%
Insights for Seneca, by topic

About Neilsberg Research

Neilsberg Research Avatar
Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.

Cite this page


			
			 	 
			 
	      
Url to be used as reference

			
				
				
		
This article is for informational purposes only and is not intended to be legal or tax advice. We recommend that you consult with a qualified professional such as a lawyer or accountant before making a decision. Many of the products and services featured here are from our affiliate partners. We may receive commissions on purchases made from our chosen links. Read advertiser disclosure.