Seneca, KS Profile: Facts, Map & Data


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Seneca, Kansas - Basic Facts

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The City of Seneca had a population of 1,920 as of July 1, 2017. 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, 2017.

Alternate Unofficial Names for Seneca: Castle Rock.

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City of Seneca, KS Boundary Map

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Seneca, KS Data & Demographics (As of July 1, 2017)


Total Population 1,920
Daytime Population: Workers 2,330
Daytime Population: Residents 1,014
Total Daytime Population (TDP) 3,344
Ratio TDP/Total Population1 1.74
Population in Households 1,839
Population in Familes 1,426
Population in Group Qrtrs 81
Population Density2 1,172
Diversity Index3 8


Median Household Income $46,352
Average Household Income $69,309
Per Capita Income $31,462


Total Housing Units 982 (100%)
Owner Occupied HU 666 (67.8%)
Renter Occupied HU 219 (22.3%)
Vacant Housing Units 96 ( 9.8%)
Median Home Value $127,094
Average Home Value $154,648


Total Households 886
Average Household Size 2.08
Family Households 513
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood 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.


2010-2017 2017-2022
Population -0.5% -0.21%
Households -0.34% -0.11%
Families 0.11% -0.31%
Median Household Income   3.03%
Per Capita Income   3.53%

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, 2017 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 # 129 81st
Population Density # 191 72nd
Diversity Index # 617 8th
Median Household Income # 417 38th
Per Capita Income # 93 86th

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

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