Seneca, Kansas Population 2021

2,135
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Seneca is a city located in Nemaha County Kansas. It is also the county seat of Nemaha County. With a 2020 population of 2,135, it is the 110th largest city in Kansas and the 7378th largest city in the United States . Seneca is currently growing at a rate of 1.43% annually and its population has increased by 7.23% since the most recent census, which recorded a population of 1,991 in 2010. Seneca reached it's highest population of 2,135 in 2021. Spanning over 2 miles, Seneca has a population density of 1,292 people per square mile.

The average household income in Seneca is $67,832 with a poverty rate of 7.19%. The median rental costs in recent years comes to $522 per month, and the median house value is $151,800. The median age in Seneca is 47.4 years, 43.1 years for males, and 51.4 years for females.

Seneca Demographics

According to the most recent ACS, the racial composition of Seneca was:

  • White: 95.06%
  • Two or more races: 2.06%
  • Black or African American: 1.20%
  • Native American: 1.10%
  • Other race: 0.58%
  • Asian: 0.00%
  • Native Hawaiian or Pacific Islander: 0.00%
The current population of Seneca, Kansas is 2,135 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 2,045.The last official US Census in 2010 recorded the population at 1,991.

Seneca, Kansas Population 2021

Population by Race

Race Population Percentage
White1,98195.06%
Two or More Races432.06%
Black or African American251.20%
American Indian and Alaska Native231.10%
Some Other Race120.58%
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Seneca Population by Race

Seneca Population Pyramid $2021

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Seneca Median Age

47.4


Total

43.1


Male

51.4


Female

Seneca Adults

There are 1,688 adults, (582 of whom are seniors) in Seneca.

Seneca Age Dependency

88.4

Age Dependency Ratio

52.6

Old Age Dependency Ratio

35.8

Child Dependency Ratio

Seneca Sex Ratio

Female

1,049

50.34%

Male

1,035

49.66%

Seneca Population by Age

Seneca Renter vs Owner Occupied by Household Type

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Seneca Household Types

Type Owner Renter
Married85.6%14.4%
All75.5%24.5%
Non Family68.2%31.8%
Male65%35%
Female40.4%59.6%

75.5%

Rate of Home Ownership

Seneca Households and Families

Type Count Average Size Owned
All9602.0475.5
Married4862.7585.6
Non Family3871.0368.2
Female472.2840.4
Male402.7865

2.67

Average Family Size

2.04

Average Household Size

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Seneca Households by Type

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Education Attained Count Percentage
Less Than 9th Grade855.46%
9th to 12th Grade462.95%
High School Graduate66842.88%
Some College30019.26%
Associates Degree16010.27%
Bachelors Degree19612.58%
Graduate Degree1036.61%
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Seneca Educational Attainment by Sex (over 25)

Seneca Educational Attainment by Race

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Race Total High School Bachelors
White1,4841,365297
Hispanic31192
2+ Races2828
Black1111
Native American44

The highest rate of high school graduation is among black people with a rate of 100.00%.

The highest rate of bachelors degrees is among white people with a rate of 20.01%.

Seneca Educational Attainment by Race

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Name Average Male Female
Overall$38,793$42,321$32,738
Less Than 9th Grade$35,625$36,250$
High School Graduate$31,833$39,063$27,938
Some College$31,607$37,222$27,266
Bachelors Degree$51,538$66,042$40,625
Graduate Degree$58,125$116,667$52,813

$38,793

Average Earnings

$42,321

Average Male

$32,738

Average Female

Seneca Earnings by Educational Attainment

Seneca Language by Age

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Seneca Language

97.69% of Seneca residents speak only English, while 2.31% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.66% of the population.

Seneca Language

Seneca Poverty by Race

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Name Total In Poverty Poverty Rate
White1,8171196.55%
Hispanic701420.00%
Multiple4336.98%
Native22313.64%
Black22313.64%

7.19%

Overall Poverty Rate

6.55%

Male Poverty Rate

7.82%

Female Poverty Rate

Poverty in Seneca

The race most likely to be in poverty in Seneca is Hispanic, with 20.00% below the poverty level.

The race least likely to be in poverty in Seneca is White, with 6.55% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.62%. Among those working part-time, it was 10.56%, and for those that did not work, the poverty rate was 13.41%.

Seneca Poverty

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Name Poverty
Less Than 9th Grade12.90%
High School8.25%
Some College6.11%
Bachelors or Greater0.69%

Seneca Poverty Rate by Education

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Rate Poverty
Female Unemployed0.00%
Male Unemployed100.00%
Female Employed3.09%
Male Employed2.00%

Seneca Poverty Rate by Employment Status and Sex

Seneca Income by Household Type

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Name Median Mean
Households$53,478$67,832
Families$83,977$87,427
Married Families$90,278-
Non Families$26,544$37,530
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Income by Household Type

Seneca Marital Status

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Marriage Rates

56.8%

Overall Marriage Rate

58.5%

Male Marriage Rate

55.3%

Female Marriage Rate

Seneca Married by Age and Sex

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Seneca Marriage

The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 35-44.

Seneca Marital Status by Race

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Seneca Marital Status

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172

Number of Veterans

165

Male Veterans

7

Female Veterans

War Veterans
Vietnam78
First Gulf War29
Second Gulf War28
Korea21
World War II4

Seneca Veterans by War

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Age Group Veterans
75+63
65 to 7454
55 to 6424
35 to 5422
18 to 349

Seneca Veterans by Age

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Name Veterans % of Total
White1599.85%
2+ Races1346.43%

Seneca Veterans by Race

Seneca Veterans by Education

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7.19%

Veteran Poverty Rate

28.10%

Veteran Disability Rate

Seneca Veterans by Education

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61.8%

Labor Force Participation

61.6%

Employment Rate

0.3%

Unemployment Rate

Seneca Employment by Age

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Seneca Employment by Race

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Seneca Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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79.80%

Born in Seneca

98.46%

Native Born

1.54%

Foreign Born

0.14%

Non Citizen

1.39%

Naturalized

Place of Birth

98.46% of Seneca residents were born in the United States, with 79.80% having been born in Kansas. 0.14% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Seneca Place of Birth

Year Population Growth Annual Growth Rate
20212,135301.43%
20202,105301.45%
20192,075301.47%
20182,045180.89%
20172,027-1-0.05%
20162,028130.65%
20152,015150.75%
20142,00040.20%
20131,996100.50%
20121,986-8-0.40%
20111,994-8-0.40%
20102,0020.00%

Seneca Population by Year