Seneca, OR Profile: Facts, Map & Data


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Seneca, Oregon - Basic Facts

The City of Seneca had a population of 201 as of July 1, 2015. 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 Oregon. See peer rankings below.

The primary coordinate point for Seneca is located at latitude 44.1352 and longitude -118.9763 in Grant County. The formal boundaries for the City of Seneca (see map below) encompass a land area of 0.8 sq. miles and a water area of 0 sq. miles. Grant County is in the Pacific time zone (GMT -8). The elevation is 4,675 feet.

The City of Seneca (GNIS ID: 2411867) has a C1 Census Class Code which indicates an active incorporated place that does not serve 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.

City of Seneca, OR Boundary Map


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


Total Population 201
Population in Households 201
Population in Familes 163
Population in Group Qrtrs 0
Population Density1 253
Diversity Index2 18


Total Households 97
Average Household Size 2.07
Family Households 65
Average Family Size 3


Total Housing Units 130 (100%)
Owner Occupied HU 73 (56.2%)
Renter Occupied HU 24 (18.5%)
Vacant Housing Units 33 (25.4%)
Median Home Value $139,706
Average Home Value $214,384


Median Household Income $41,027
Average Household Income $67,787
Per Capita Income $31,367
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.19% 0.2%
Households 0.4% 0.21%
Families 1.54% 0.31%
Median Household Income   2.53%
Per Capita Income   3.19%
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.

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Seneca, OR - Peer Comparisons by Rank and Percentile

The table below compares Seneca to the other 377 incorporated cities, towns and CDPs in Oregon 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 # 320 16th
Population Density1 # 294 22nd
Diversity Index2 # 333 12th
Median Household Income # 257 32nd
Per Capita Income # 52 86th

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