Seneca, KS Profile: Facts, Map & Data


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Seneca, Kansas - Basic Facts

Real Estate Resources

The City of Seneca had a population of 1,921 as of July 1, 2015. Seneca ranks in the lower quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Kansas. See peer rankings below.

The primary coordinate point for Seneca is located at latitude 39.8377 and longitude -96.0691 in Nemaha County. The formal boundaries for the City of Seneca (see map below) encompass a land area of 1.64 sq. miles and a water area of 0 sq. miles. Nemaha County is in the Central time zone (GMT -6). The elevation is 1,142 feet.

The City of Seneca (GNIS ID: 485651) has a C5 Census Class Code which indicates an active incorporated place that is independent of any county subdivision and serves as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Beneath the boundary map are tables with Seneca population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2015.

Alternate Unofficial Names for Seneca: Castle Rock.

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


City of Seneca, KS Boundary Map

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Boundary Maps: Nemaha County | Kansas Counties

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Seneca, KS Data & Demographics (As of July 1, 2015)


Total Population 1,921
Population in Households 1,840
Population in Familes 1,433
Population in Group Qrtrs 81
Population Density1 1,177
Diversity Index2 6


Total Households 895
Average Household Size 2.06
Family Households 523
Average Family Size 3


Total Housing Units 982 (100%)
Owner Occupied HU 657 (66.9%)
Renter Occupied HU 237 (24.1%)
Vacant Housing Units 87 ( 8.9%)
Median Home Value $81,612
Average Home Value $124,811


Median Household Income $50,443
Average Household Income $65,110
Per Capita Income $29,595
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population -0.68% -0.42%
Households -0.27% -0.22%
Families 0.52% -0.39%
Median Household Income   2.27%
Per Capita Income   3.04%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.


Seneca, KS - Peer Comparisons by Rank and Percentile

The table below compares Seneca to the other 671 incorporated cities, towns and CDPs in Kansas by rank and percentile using July 1, 2015 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 130 81st
Population Density1 # 200 70th
Diversity Index2 # 637 6th
Median Household Income # 271 60th
Per Capita Income # 75 89th

Additional comparisons and rankings can be made with a VERY EASY TO USE Kansas Census Data Comparison Tool.