HomeSouth DakotaFaulk CountySeneca
Seneca, South Dakota: commercial real estate data.
Seneca is a Census town of 22 people across 0.42 square miles of land, in Faulk County. 100.0 percent of occupied homes are owned.
Underlined figures are computed by MMCG Analytics, not published by the agency.
This is a small place, and the figures below carry wide margins.
The American Community Survey reaches Seneca through a sample, not a count, and in a place this size that sample is thin. The population estimate here is 22 with a margin of error of plus or minus 15, which is 68.2 percent of the estimate itself. Every figure whose margin reaches 20 percent is printed with that margin beside it, so you can see the width of each one rather than having to assume it.
Nothing has been removed or adjusted. These are the published federal estimates, shown with the uncertainty the Census publishes alongside them.
Seneca
What Seneca is
- Census place typetown
- Land area0.42 sq mi
- Water area0 sq mi
- Population per square mile of land53 plus or minus 36
- County holding the largest share of its areaFaulk County, 100.0 percent
US Census Bureau, cartographic boundary file, places, 2024 vintage. US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Seneca
How many people live in Seneca
- Population22 plus or minus 15
- Median age67.3 plus or minus 14.3
- Population under 180
- Share under 180.0 percent
- Population 65 and over12 plus or minus 13
- Share 65 and over54.5 percent plus or minus 45.2
- Households13 plus or minus 10
- Family households6 plus or minus 5
- Share of households that are families46.2 percent plus or minus 14.8
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Seneca
Income and work in Seneca
- Per capita income$16,150 plus or minus $7,347
- Civilian labor force6 plus or minus 5
- Employed6 plus or minus 5
- Unemployed0
- Unemployment rate0.0 percent
- Adults 25 and over22 plus or minus 15
- Adults 25 and over with a high school diploma or higher77.3 percent plus or minus 50.3
- Adults 25 and over with a bachelor degree or higher0.0 percent
- Adults 25 and over with a graduate degree0.0 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Seneca
Housing in Seneca
- Housing units26 plus or minus 15
- Occupied units13 plus or minus 10
- Vacant units13 plus or minus 12
- Vacancy rate50.0 percent plus or minus 36.0
- Owner occupied13 plus or minus 10
- Renter occupied0
- Ownership rate100.0 percent
- Single family units26 plus or minus 18
- Share single family100.0 percent plus or minus 38.5
- Units in buildings of two or more0
- Share in buildings of two or more0.0 percent
- Mobile homes0
- Median year structure built1938
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Seneca
How Seneca gets to work
- Workers 16 and over who commute6 plus or minus 5
- Commuting under 15 minutes4 plus or minus 11
- Share commuting under 15 minutes66.7 percent plus or minus 177.9
- Commuting 30 minutes or more0
- Share commuting 30 minutes or more0.0 percent
- Drove alone83.3 percent plus or minus 46.1
- Carpooled0.0 percent
- Public transport0.0 percent
- Walked16.7 percent plus or minus 30.3
- Worked from home0.0 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Seneca
Flood risk in Seneca
- NFIP communityTown of Seneca
- NFIP community number461206
- Participating in the NFIPYes
- Community Rating System classNone
- Currently effective map date(NSFHA)
The Town of Seneca participates in the National Flood Insurance Program as community 461206 and carries no Community Rating System class, so no CRS premium discount applies to it.
Federal Emergency Management Agency, NFIP Community Status Book (OpenFEMA), as of 2026-09-26.
Faulk County, not Seneca
Faulk County context, not Seneca figures
- Establishments in Faulk County64
- Covered employment, Faulk County688
- Average annual pay, Faulk County$42,528
- Housing units permitted, Faulk County4
Every figure in this section is published for Faulk County as a whole and is not a measurement of Seneca.
US Census Bureau, County Business Patterns, 2023. US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages. US Census Bureau, Building Permits Survey, 2024 annual.
Coverage
What this page does not hold.
Parcel detail, zoning and the flood zone at an address are not on this page; they resolve at the address in the platform. How this page was built →
Common questions
Seneca questions, answered from the record.
How many people live in Seneca, South Dakota?
22, in 13 households. Seneca town covers 0.42 square miles of land, which is 53 people per square mile. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
What county is Seneca in?
Faulk County, which holds 100.0 percent of the place by area. Source: US Census Bureau, cartographic boundary file, places, 2024 vintage.
Is Seneca in the National Flood Insurance Program?
Yes. Seneca appears in the FEMA Community Status Book as Seneca, town of, community 461206, with no Community Rating System class, so no CRS discount applies. Whether a specific parcel sits in a mapped special flood hazard area is an address level question the platform answers.
Are the county figures on this page Seneca figures?
No, and they are labeled so. County Business Patterns, QCEW, the Building Permits Survey, BEA product and IRS migration are published for Faulk County as a whole and there is no place level equivalent. They appear in one clearly marked section as context and are never presented as measurements of Seneca.
Is zoning published for Seneca?
No. Nothing on this page presents parcel level zoning.
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