Seneca, SD Profile: Facts, Map & Data


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Seneca, South Dakota - Basic Facts

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The Town of Seneca had a population of 36 as of July 1, 2016. Seneca ranks in the lower quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in South Dakota. See peer rankings below.

The primary coordinate point for Seneca is located at latitude 45.0608 and longitude -99.5092 in Faulk County. The formal boundaries for the Town of Seneca (see map below) encompass a land area of 0.42 sq. miles and a water area of 0 sq. miles. Faulk County is in the Central time zone (GMT -6). The elevation is 1,906 feet.

The Town of Seneca (GNIS ID: 1267563) 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, 2016.

Alternate Unofficial Names for Seneca: Seminole.

Neighborhood Data

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Town of Seneca, SD Boundary Map

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Seneca, SD Data & Demographics (As of July 1, 2016)


Total Population 36
Population in Households 18
Population in Familes 15
Population in Group Qrtrs 18
Population Density1 86
Diversity Index2 0


Total Households 14
Average Household Size 1.29
Family Households 10
Average Family Size 2


Total Housing Units 29 (100%)
Owner Occupied HU 12 (41.4%)
Renter Occupied HU 2 ( 6.9%)
Vacant Housing Units 15 (51.7%)
Median Home Value $75,000
Average Home Value $93,182


Median Household Income $50,000
Average Household Income $70,648
Per Capita Income $19,851
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population -0.86% -0.56%
Households -2.11% 0.0%
Families -1.51% -2.09%
Median Household Income   1.08%
Per Capita Income   1.31%
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, SD - Peer Comparisons by Rank and Percentile

The table below compares Seneca to the other 391 incorporated cities, towns and CDPs in South Dakota by rank and percentile using July 1, 2016 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 # 356 10th
Population Density1 # 335 15th
Diversity Index2 # 378 2nd
Median Household Income # 158 57th
Per Capita Income # 343 13th

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