What is the population of Seneca?

The population of Seneca, SD is 37.

Where is Seneca located?

Seneca, SD is located at latitude 45.0616400 and longitude -99.5120600. It is in United States.

What is the area of Seneca?

The area of Seneca, SD is 1.084557 km².

What is the elevation of Seneca?

Seneca, SD has an elevation of 581 meters (1906 feet) above sea level.

What time zone is Seneca in?

Seneca, SD is in the America/Chicago time zone.

What state is Seneca in?

Seneca is in the state of South Dakota, United States.

What county is Seneca, SD in?

Seneca is in Faulk County, South Dakota.

How has the population of Seneca changed?

The population of Seneca, SD has decreased from 38 (2010) to 37 (2020), a change of -2.6%.

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Seneca, South Dakota

Seneca: town in South Dakota, United States of America

About

Seneca is a town located in the county of Faulk in the U.S. state of South Dakota. Its population at the 2010 census was 38 and a population density of 35 people per km². After 10 years in 2020 city had an estimated population of 37 inhabitants.

Quick Facts about Seneca

Population	37 (2020)
Country	United States of America
State	South Dakota (United States)
County	Faulk County
Postal code	57473
Phone Area Codes	605
Area	1.08 km²
Latitude & Longitude	45.0616,-99.5121
Altitude	1,906 feet / 581 meters
Time Zone	UTC−06:00
Local time	14:58:01 (16th April 2026)
Density	34 Pop. per km² as of 2020
Population growth	-2.7% (2010-2020)
Weather	81℉ Sunny 7-days weather

Geography

Seneca is located at 45°3'42"N 99°30'43"W (45.0616400, -99.5120600).

Seneca map

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Weather

81°F

Sunny

18 to 22 mph SW Today

Sunny, with a high near 81. Southwest wind 18 to 22 mph, with gusts as high as 32 mph.

7-Day Forecast

Demographics

According to census records, the population of Seneca decreased by 2.7% in 10 years.

Year	Population	% Change	Method
2010	38	-	census
2011	38	0%	estimation process
2012	38	0%	estimation process
2013	38	0%	estimation process
2014	37	-2.7%	estimation process
2015	37	0%	estimation process
2016	37	0%	estimation process
2017	37	0%	estimation process
2018	36	-2.78%	estimation process
2019	37	2.7%	estimation process
2020	37	0%	estimation process

Seneca zip code is 57473. County name: Faulk, County fips: 46049

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Nearby Post Offices

Closest post offices linked to Seneca.

Post Office Name	City	ZIP
Seneca Post Office	Seneca (SD)	57473

Other places with the same name (7)

Seneca, South Carolina city in South Carolina with a population of 8,564 people.
Seneca, Missouri city in Missouri with a population of 2,394 people.
Seneca, Illinois village in Illinois with a population of 2,179 people.
Seneca, Kansas city in Kansas with a population of 2,079 people.
Seneca, Michigan township in Lenawee County, Michigan with a population of 1,181 people.
Seneca, Wisconsin town in Crawford County, Wisconsin, United States with a population of 1,051 people.
Seneca, Oregon city in Oregon, USA with a population of 225 people.

Other cities in Faulk County

Cities, towns, neighborhoods & other populated places in Faulk County , SD.

City Name	Population	Title
Faulkton	708	City in and county seat of Faulk County, South Dakota, United States
Cresbard	101	Town in South Dakota, United States of America
Zell	63	Human settlement in South Dakota, United States of America
Orient	47	Town in South Dakota, United States of America
Rockham	33	Town in South Dakota, United States of America
Chelsea	26	Town in South Dakota, United States of America
Devoe	24	Township in Faulk County, South Dakota
Onaka	14	Town in South Dakota, United States of America